A colorless and flammable gas at room temperature and pressure. Ethylene oxide is a bactericidal, fungicidal, and sporicidal disinfectant. It is effective against most micro-organisms, including viruses. It is used as a fumigant for foodstuffs and textiles and as an agent for the gaseous sterilization of heat-labile pharmaceutical and surgical materials. (From Reynolds, Martindale The Extra Pharmacopoeia, 30th ed, p794)
Derivatives of ethylene, a simple organic gas of biological origin with many industrial and biological use.
The destroying of all forms of life, especially microorganisms, by heat, chemical, or other means.
A colorless, odorless, viscous dihydroxy alcohol. It has a sweet taste, but is poisonous if ingested. Ethylene glycol is the most important glycol commercially available and is manufactured on a large scale in the United States. It is used as an antifreeze and coolant, in hydraulic fluids, and in the manufacture of low-freezing dynamites and resins.
A nonionic polyoxyethylene-polyoxypropylene block co-polymer with the general formula HO(C2H4O)a(-C3H6O)b(C2H4O)aH. It is available in different grades which vary from liquids to solids. It is used as an emulsifying agent, solubilizing agent, surfactant, and wetting agent for antibiotics. Poloxamer is also used in ointment and suppository bases and as a tablet binder or coater. (Martindale The Extra Pharmacopoeia, 31st ed)
Polymers of ETHYLENE OXIDE and water, and their ethers. They vary in consistency from liquid to solid depending on the molecular weight indicated by a number following the name. They are used as SURFACTANTS, dispersing agents, solvents, ointment and suppository bases, vehicles, and tablet excipients. Some specific groups are NONOXYNOLS, OCTOXYNOLS, and POLOXAMERS.
A copolymer of polyethylene and polypropylene ether glycol. It is a non-ionic polyol surface-active agent used medically as a fecal softener and in cattle for prevention of bloat.
Used as a solvent, in the manufacture of insecticides, and for treating sweet potatoes before planting. May cause nausea, vomiting, pains in head and chest, stupefaction. Irritates mucous membranes and causes kidney and liver degeneration.
An ethylene compound with two hydroxy groups (-OH) located on adjacent carbons. They are viscous and colorless liquids. Some are used as anesthetics or hypnotics. However, the class is best known for their use as a coolant or antifreeze.
Substances used on inanimate objects that destroy harmful microorganisms or inhibit their activity. Disinfectants are classed as complete, destroying SPORES as well as vegetative forms of microorganisms, or incomplete, destroying only vegetative forms of the organisms. They are distinguished from ANTISEPTICS, which are local anti-infective agents used on humans and other animals. (From Hawley's Condensed Chemical Dictionary, 11th ed)
Hospital department responsible for receiving, storing, and distributing medical and surgical supplies and equipment.
An NADPH-dependent enzyme that catalyzes the conversion of L-ARGININE and OXYGEN to produce CITRULLINE and NITRIC OXIDE.
The reproductive elements of lower organisms, such as BACTERIA; FUNGI; and cryptogamic plants.
Toxic, chlorinated, saturated hydrocarbons. Include both the 1,1- and 1,2-dichloro isomers. The latter is considerably more toxic. It has a sweet taste, ethereal odor and has been used as a fumigant and intoxicant among sniffers. Has many household and industrial uses.
The aggregate enterprise of manufacturing and technically producing chemicals. (From Random House Unabridged Dictionary, 2d ed)
A measure of the amount of WATER VAPOR in the air.
An effective soil fumigant, insecticide, and nematocide. In humans, it causes severe burning of skin and irritation of the eyes and respiratory tract. Prolonged inhalation may cause liver necrosis. It is also used in gasoline. Members of this group have caused liver and lung cancers in rodents. According to the Fourth Annual Report on Carcinogens (NTP 85-002, 1985), 1,2-dibromoethane may reasonably be anticipated to be a carcinogen.
An office in the Department of Labor responsible for developing and establishing occupational safety and health standards.
Compounds formed by the joining of smaller, usually repeating, units linked by covalent bonds. These compounds often form large macromolecules (e.g., BIOPOLYMERS; PLASTICS).
Disinfectant used in vapor form to sterilize vaccines, grafts, etc. The vapor is very irritating and the liquid form is carcinogenic.
A class of amino acids characterized by a closed ring structure.
Organic compounds that include a cyclic ether with three ring atoms in their structure. They are commonly used as precursors for POLYMERS such as EPOXY RESINS.
Further or repeated use of equipment, instruments, devices, or materials. It includes additional use regardless of the original intent of the producer as to disposability or durability. It does not include the repeated use of fluids or solutions.
Agents that modify interfacial tension of water; usually substances that have one lipophilic and one hydrophilic group in the molecule; includes soaps, detergents, emulsifiers, dispersing and wetting agents, and several groups of antiseptics.
Any of the compounds derived from a group of glycols or polyhydroxy alcohols by chlorine substitution for part of the hydroxyl groups. (McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)
Process by which unwanted microbial, plant or animal materials or organisms accumulate on man-made surfaces.
Formal voluntary or governmental procedures and standards required of hospitals and health or other facilities to improve operating efficiency, and for the protection of the consumer.
The application of smoke, vapor, or gas for the purpose of disinfecting or destroying pests or microorganisms.
Synthetic thermoplastics that are tough, flexible, inert, and resistant to chemicals and electrical current. They are often used as biocompatible materials for prostheses and implants.
Particles consisting of aggregates of molecules held loosely together by secondary bonds. The surface of micelles are usually comprised of amphiphatic compounds that are oriented in a way that minimizes the energy of interaction between the micelle and its environment. Liquids that contain large numbers of suspended micelles are referred to as EMULSIONS.
A highly poisonous compound used widely in the manufacture of plastics, adhesives and synthetic rubber.
Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)
Study of stamps or postal markings. It usually refers to the design and commemorative aspects of the stamp.
An agency in the Executive Branch of the Federal Government. It was created as an independent regulatory agency responsible for the implementation of federal laws designed to protect the environment. Its mission is to protect human health and the ENVIRONMENT.
Any substance in the air which could, if present in high enough concentration, harm humans, animals, vegetation or material. Substances include GASES; PARTICULATE MATTER; and volatile ORGANIC CHEMICALS.
The collection, writing, and editing of current interest material on topics related to biomedicine for presentation through the mass media, including newspapers, magazines, radio, or television, usually for a public audience such as health care consumers.
Elements, compounds, mixtures, or solutions that are considered severely harmful to human health and the environment. They include substances that are toxic, corrosive, flammable, or explosive.
Agencies of the FEDERAL GOVERNMENT of the United States.
A 34-amino acid polypeptide antibiotic produced by Streptococcus lactis. It has been used as a food preservative in canned fruits and vegetables, and cheese.
The process of discovering or asserting an objective or intrinsic relation between two objects or concepts; a faculty or power that enables a person to make judgments; the process of bringing to light and asserting the implicit meaning of a concept; a critical evaluation of a person or situation.
A basis of value established for the measure of quantity, weight, extent or quality, e.g. weight standards, standard solutions, methods, techniques, and procedures used in diagnosis and therapy.
Procedures that render the female sterile by interrupting the flow in the FALLOPIAN TUBE. These procedures generally are surgical, and may also use chemicals or physical means.
Procedures to block or remove all or part of the genital tract for the purpose of rendering individuals sterile, incapable of reproduction. Surgical sterilization procedures are the most commonly used. There are also sterilization procedures involving chemical or physical means.
The facilitation of a chemical reaction by material (catalyst) that is not consumed by the reaction.
The hard rigid covering of animals including MOLLUSCS; TURTLES; INSECTS; and crustaceans.
Unsaturated hydrocarbons of the type Cn-H2n, indicated by the suffix -ene. (Grant & Hackh's Chemical Dictionary, 5th ed, p408)
Works about lists of drugs or collections of recipes, formulas, and prescriptions for the compounding of medicinal preparations. Formularies differ from PHARMACOPOEIAS in that they are less complete, lacking full descriptions of the drugs, their formulations, analytic composition, chemical properties, etc. In hospitals, formularies list all drugs commonly stocked in the hospital pharmacy.
Economic aspects of the fields of pharmacy and pharmacology as they apply to the development and study of medical economics in rational drug therapy and the impact of pharmaceuticals on the cost of medical care. Pharmaceutical economics also includes the economic considerations of the pharmaceutical care delivery system and in drug prescribing, particularly of cost-benefit values. (From J Res Pharm Econ 1989;1(1); PharmacoEcon 1992;1(1))
That segment of commercial enterprise devoted to the design, development, and manufacture of chemical products for use in the diagnosis and treatment of disease, disability, or other dysfunction, or to improve function.
Organizations representing specialized fields which are accepted as authoritative; may be non-governmental, university or an independent research organization, e.g., National Academy of Sciences, Brookings Institution, etc.
Regulations to assure protection of property and equipment.

Is breast cancer cluster influenced by environmental and occupational factors among hospital nurses in Hungary? (1/202)

An unusual cluster of 8 breast cancer and 8 other malignant tumor cases (ovarian, uterus, lung, colon and brain tumors and malignant melanoma) developed in a period of 12 years among 98 nurses exposed to ethylene oxide (EtOx) for 5 15 years in a unit using gas sterilizer in a hospital of the archiepiscopal city of Eger, Hungary. EtOx concentration in air samples of the working area varied from 5 to 150 mg/m3. The question was, if there was any causal relationship between the elevated incidence of breast cancer and the EtOx exposure, the other possibility was, that this cluster appeared accidentally. EtOx is a human carcinogen, however, no increased breast cancer incidence in EtOx-exposed subjects was reported in the literature. We followed up for two consecutive years the 27 non cancer patients, EtOx-exposed nurses and 11 unexposed hospital controls with the aid of a multiple genotoxicology monitor including chromosomal aberration, sister-chromatide exchange, HPRT point mutation and DNA repair studies. The results were compared with data from 30 local historical controls, 48 historical controls from Budapest, 14 hospital controls and 9 EtOx exposed nurses from Budapest. Significantly high chromosome aberration yields (especially chromosome type exchanges) were alike detected in EtOx-exposed and the two other control groups in Eger. These results could not be interpreted as a consequence of EtOx exposure only, since in the EtOx-exposed group from Budapest, beside an increased total aberration frequency, the obtained exchange type aberration yields were as low as the historical controls. A plausible explanation can be the natural low dose radioactivity (222Rn) of the local tap-water due to a specific geological situation in Eger. The spontaneous breast cancer incidence in Hungary doubled in the last 10 years compared with the previous 20 years (1960 1980), especially in Eger. The appearance of the high breast cancer incidence in the hospital of Eger indicates the combined effect of EtOx and a more common local etiologic factor, such as the naturally radioactive tap-water. However, since the reported studies did not involve the investigation either of the genetic predisposition, or the effects of other possible environmental, occupational, and/or life style confounding factors, further studies (partly in progress) are necessary to clarify the importance of these factors.  (+info)

Molecular dosimetry of endogenous and ethylene oxide-induced N7-(2-hydroxyethyl) guanine formation in tissues of rodents. (2/202)

The formation of N7-(2-hydroxyethyl)guanine (7-HEG) in DNA was investigated previously in target and non-target tissues of F-344 rats and B6C3F1 mice exposed to >/=ISOdia>/=10 p.p.m. concentrations of ethylene oxide (EO) using fluorescence-linked high-performance liquid chromatography [V.E. Walker et al. (1992) Cancer Res., 52, 4238-4334]. In order to study the dose-responses for 7-HEG at lower exposures, a highly sensitive and specific gas chromatography coupled with high-resolution mass spectrometry (GC-HRMS) assay was developed. DNA was extracted from liver, brain, lung and spleen of B6C3F1 mice and F-344 rats exposed to 0, 3, 10, 33 or 100 p.p.m. EO for 4 weeks (6 h/day, 5 days/week). Analysis of DNA from control rodents showed that endogenous 7-HEG varied from 0.2 +/- 0.1 to 0.3 +/- 0.2 pmol/micromol guanine in tissues of rats and mice. 7-HEG exhibited tissue- and species-specific dose-response relationships in EO-exposed animals. Linear dose-response relationships were evident in mouse liver, brain and spleen at exposures between 3 and 100 p.p.m. Mouse lung exhibited a slightly sublinear response between 33 and 100 p.p.m. EO. The relationships were linear in liver and spleen of rats between 3 and 100 p.p.m. EO, but were slightly sublinear in brain and lung between 33 and 100 p.p.m. EO. The number of 7-HEG adducts present in rats exposed to 3 p.p.m. EO was 5.3-12.5 times higher than endogenous 7-HEG in unexposed controls. In contrast, mice exposed to 3 p.p.m. EO only had 1.3- to 2.5-fold greater numbers of 7-HEG adducts. The factors driving the exposure-response relationships are also likely to affect carcinogenic and mutagenic responses of rodents to EO. Likewise, a better understanding of the relationships between 7-HEG derived from low exposures to EO and endogenously formed 7-HEG may be important for the accurate extrapolation of risk to humans.  (+info)

Dose-rate effects of ethylene oxide exposure on developmental toxicity. (3/202)

In risk assessment, evaluating a health effect at a duration of exposure that is untested involves assuming that equivalent multiples of concentration (C) and duration (T) of exposure have the same effect. The limitations of this approach (attributed to F. Haber, Zur Geschichte des Gaskrieges [On the history of gas warfare], in Funf Vortrage aus den Jahren 1920-1923 [Five lectures from the years 1920-1923], 1924, Springer, Berlin, pp. 76-92), have been noted in several studies. The study presented in this paper was designed to specifically look at dose-rate (C x T) effects, and it forms an ideal case study to implement statistical models and to examine the statistical issues in risk assessment. Pregnant female C57BL/6J mice were exposed, on gestational day 7, to ethylene oxide (EtO) via inhalation for 1.5, 3, or 6 h at exposures that result in C x T multiples of 2100 or 2700 ppm-h. EtO was selected because of its short half-life, documented developmental toxicity, and relevance to exposures that occur in occupational settings. Concurrent experiments were run with animals exposed to air for similar periods. Statistical analysis using models developed to assess dose-rate effects revealed significant effects with respect to fetal death and resorptions, malformations, crown-to-rump length, and fetal weight. Animals exposed to short, high exposures of EtO on day 7 of gestation were found to have more adverse effects than animals exposed to the same C x T multiple but at longer, lower exposures. The implication for risk assessment is that applying Haber's Law could potentially lead to an underestimation of risk at a shorter duration of exposure and an overestimation of risk at a longer duration of exposure. Further research, toxicological and statistical, are required to understand the mechanism of the dose-rate effects, and how to incorporate the mechanistic information into the risk assessment decision process.  (+info)

Cellular internalization of PCL(20)-b-PEO(44) block copolymer micelles. (4/202)

The cellular internalization of polycaprolactone-b-poly(ethylene oxide) (PCL(20)-b-PEO(44)) copolymer micelles were investigated in PC12 cells cultures. The micelles were found to be internalized into PC12 cells when followed over the 4-h incubation period. Also, the internalization process was found to fulfill the basic criteria for endocytotic uptake in that it was time, temperature, pH and energy dependent. In addition, the use of other pharmacological manipulations (hypertonic treatment, Brefeldin A) provide further evidence that the mode of cellular internalization is in fact endocytotic.  (+info)

Characterization of DNA condensates induced by poly(ethylene oxide) and polylysine. (5/202)

High-molecular-weight DNA is known to collapse into very compact particles in a salt solution containing polymers like poly(ethylene oxide) [(EO)n] or polyacrylate. The biological relevance of this phenomenon is suggested by our recent finding that high concentrations of the highly acidic internal peptides found in the mature T4 bacteriophage head, as well as poly(glutamic acid) and poly(aspartic acid), can collapse DNA in a similar manner. The structure of DNAs collapsed by various methods has been studied with electron microscope. We find (EO)n collapses T4 or T7 bacteriophage DNA into compact particles only slightly larger than the size of the T4 and T7 head, respectively. In contrast, polylysine collapses DNA into different types of structures. Double-stranded DNA collapsed with (EO)n is cut by the single-strand specific Neurospora crassa endonuclease (EC 3.1.4.21) into small fragments. Extensive digestion only occurs above the critical concentration of polymer required for DNA collapse, demonstrating the (EO)n-collapsed DNA contains enzyme-vulnerable regions (probably at each fold), which are preferentially attacked. The size of the DNA fragments produced by limit-digestion with the nuclease ranges between 200 and 400 base pairs when DNA is collapsed by (EO)n. Only fragments of DNA which are larger than 600 base pairs are cut by the endonuclease in (EO)n-containing solution.  (+info)

Combined effects of gamma-radiation and ethylene oxide in human diploid fibroblasts. (6/202)

Human diploid VH-10 fibroblasts were pre-exposed to gamma-rays and then treated with ethylene oxide (EtO). In the reverse experiment, the cells were pretreated with EtO and then exposed to gamma-rays. Two different dose rates of gamma-rays were used: a low dose rate (LDR, 0.66 Gy/min) and a high dose rate (HDR, 10 Gy/min). Cell killing, mutagenicity and DNA double-strand breakage were studied in both types of experiment. The induction of mutations in the HPRT locus was studied by selection in medium containing 6-thioguanine. DNA double-strand breakage, measured as fraction of activity released (FAR), was investigated using pulsed field gel electrophoresis. Concerning mutagenesis, it was found that pre-exposure of the cells to gamma-radiation (1 Gy) followed by treatment with EtO (2.5 mMh) led to an additive co-interaction, irrespective of dose rate. On the other hand, the reverse experimental procedure (pretreatment with EtO followed by gamma-ray exposure) resulted in an antagonistic effect, which was most pronounced when the HDR was applied. In the latter case, the resultant mutant frequency was two times lower than the sum of the mutant frequencies after the individual treatments. However, the effect of the combined treatment on FAR was different: FAR increased with both combinations of agents used compared with the separate and hypothetically expected effects. Moreover, the HDR exposure led to an additional increase in FAR compared with the LDR one.  (+info)

Hemoglobin adducts from acrylonitrile and ethylene oxide in cigarette smokers: effects of glutathione S-transferase T1-null and M1-null genotypes. (7/202)

Acrylonitrile (ACN) is used to manufacture plastics and fibers. It is carcinogenic in rats and is found in cigarette smoke. Ethylene oxide (EO) is a metabolite of ethylene, also found in cigarette smoke, and is carcinogenic in rodents. Both ACN and EO undergo conjugation with glutathione. The objectives of this study were to examine the relationship between cigarette smoking and hemoglobin adducts derived from ACN and EO and to investigate whether null genotypes for glutathione transferase (GSTM1 and GSTT1) alter the internal dose of these agents. The hemoglobin adducts N-(2-cyanoethyl)valine (CEVal), which is formed from ACN, and N-(2-hydroxyethyl)valine (HEVal), which is formed from EO, and GST genotypes were determined in blood samples obtained from 16 nonsmokers and 32 smokers (one to two packs/day). Smoking information was obtained by questionnaire, and plasma cotinine levels were determined by immunoassay. Glutathione transferase null genotypes (GSTM1 and GSTT1) were determined by PCR. Both CEVal and HEVal levels increased with increased cigarette smoking dose (both self-reported and cotinine-based). CEVal and HEVal levels were also correlated. GSTM1 and GSTT1 genotypes had little effect on CEVal concentrations. GSTM1 null genotypes had no significant impact on HEVal. However, HEVal levels were significantly elevated in GSTT1-null individuals when normalized to smoking status or cotinine levels. The ratio of HEVal:CEVal was also elevated in GSTT1-null smokers (1.50 +/- 0.57 versus 0.88 +/- 0.24; P = 0.0002). The lack of a functional GSTT1 is estimated to increase the internal dose of EO derived from cigarette smoke by 50-70%.  (+info)

Biomarkers of exposure and effect as indicators of potential carcinogenic risk arising from in vivo metabolism of ethylene to ethylene oxide. (8/202)

The purposes of the present study were: (i) to investigate the potential use of several biomarkers as quantitative indicators of the in vivo conversion of ethylene (ET) to ethylene oxide (EO); (ii) to produce molecular dosimetry data that might improve assessment of human risk from exogenous ET exposures. Groups (n = 7/group) of male F344 rats and B6C3F1 mice were exposed by inhalation to 0 and 3000 p. p.m. ET for 1, 2 or 4 weeks (6 h/day, 5 days/week) or to 0, 40, 1000 and 3000 p.p.m. ET for 4 weeks. N:-(2-hydroxyethyl)valine (HEV), N:7-(2-hydroxyethyl) guanine (N7-HEG) and HPRT: mutant frequencies were assessed as potential biomarkers for determining the molecular dose of EO resulting from exogenous ET exposures of rats and mice, compared with background biomarker values. N7-HEG was quantified by gas chromatography coupled with high resolution mass spectrometry (GC-HRMS), HEV was determined by Edman degradation and GC-HRMS and HPRT: mutant frequencies were measured by the T cell cloning assay. N7-HEG accumulated in DNA with repeated exposure of rodents to 3000 p.p.m. ET, reaching steady-state concentrations around 1 week of exposure in most tissues evaluated (brain, liver, lung and spleen). The dose-response curves for N7-HEG and HEV were supralinear in exposed rats and mice, indicating that metabolic activation of ET was saturated at exposures >/=1000 p.p.m. ET. Exposures of mice and rats to 200 p.p.m. EO for 4 weeks (as positive treatment controls) led to significant increases in HPRT: mutant frequencies over background in splenic T cells from exposed rats and mice, however, no significant mutagenic response was observed in the HPRT: gene of ET-exposed animals. Comparisons between the biomarker data for both unexposed and ET-exposed animals, the dose-response curves for the same biomarkers in EO-exposed rats and mice and the results of the rodent carcinogenicity studies of ET and EO suggest that too little EO arises from exogenous ET exposure to produce a significant mutagenic response or a carcinogenic response under standard bioassay conditions.  (+info)

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|p>1.1 Scope. This standard shall apply to the storage and handling of ethylene oxide in portable containers for its use in sterilization and fumigation. It also shall apply to flammable mixtures of ethylene oxide with other chemicals. 1.1.1 This standard shall not apply to the following: (1) Nonflammable mixtures of ethylene oxide with other chemicals (2) Ethylene oxide manufacturing facilities, and container filling, refilling, or transfilling facilities (3)*The off-site transportation of portable containers of ethylene oxide (4) Facilities using ethylene oxide as a chemical feedstock (5) Ethylene oxide in chambers 0.283 m3 (10 ft3) or less in volume, or for containers holding 200 g (7.05 oz) of ethylene oxide or less|/p>
BS-EN-ISO-10993-7 Biological evaluation of medical devices. Ethylene oxide sterilization residuals - Biological hazards, Testing conditions, Determination of content, Sterile equipment, Calibration, Medical equipment, Formulae (mathematics), Sampling methods, Sterilization (hygiene), Gas chromatography, Aqueous extraction methods, Factor of safety, Safety measures, Precision, Solvent extraction methods, Ethylene oxide, Chemical hazards, Conformity, Dose (drug), Biological analysis and testing, Standard solutions, Temperature, Extraction methods of analysis, Chemical analysis and testing
About ethylene oxide sterilization for medical devices and FDAs role in assuring that medical devices sterilized with ethylene oxide are safe and effective.
Learn how the ethylene oxide sterilization process works, including each step of the process & items for consideration with this tech tip from STERIS AST.
EPA also must offer the opportunity for public hearings on proposed air quality rules.. Top of Page. Is the EPA planning on setting regulations for EtO and what is the expected timeframe? What regulations are they working on, handling as well as emissions?. EPA has existing rules for industries that emit ethylene oxide, and we have begun to review those. We are starting with our air toxics emissions standards for miscellaneous organic chemical manufacturing facilities, some of which emit ethylene oxide. We also are beginning work to look at emissions standards for commercial sterilizers.. Top of Page. What does the EPA think of the Ontario Canada standards for ambient air concentration published in 2007 based upon their own work and review of various standards including North Carolina and California?. EPAs 2016 unit risk estimate (URE) for ethylene oxide is based on the best available science and follows the EPA guidelines. Ontarios 2007 air quality standards for ethylene oxide are based on ...
TY - JOUR. T1 - Estimation of surface area of montmorillonite by ethylene oxide chain adsorption. AU - Shen, Yun Hwei. N1 - Funding Information: The author thanks the National Science Council of the ROC for financially supporting this study. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.. PY - 2002/9. Y1 - 2002/9. N2 - This study investigates the feasibility of using ethylene oxide chain adsorption to determine the surface area of an expandable clay, montmorillonite. Experimental results indicate that high molecular weight poly(ethylene oxide) or nonionic surfactant with long ethylene oxide chain should be used to provide reasonable estimations for monolayer capacity. The method has advantages over Brunauer, Emmett, and Teller method in that it is readily applicable to a wide range of areas, particularly to 2:1 layer silicates under aqueous conditions.. AB - This study investigates the feasibility of using ethylene oxide chain adsorption to determine the surface area of an ...
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This image shows urban background ethylene oxide concentrations across the United States as well as air concentrations of ethylene oxide corresponding to various excess risk levels within the United States Environmental Protection Agencys acceptable excess risk range.
Quality Low Temperature Plasma Sterilizer manufacturers & exporter - buy Ethylene Oxide Gas Sterilization Process Sterilizing Medical Equipment , Medical Sterilizer Machine from China manufacturer.
Ethylene oxide is a colorless gas at room temperature and a colorless liquid below 51�F (10.7�C). It is shipped as a liquefied, compressed gas. Both the gas and liquid are potential fire and explosion hazards. Ethylene oxide has a sweet, ether-like odor at air concentrations above 500 ppm. Ethylene oxide is soluble in water and organic solvents. Synonyms include dimethylene oxide, 1,2-epoxyethane, EtO, EO, ethene oxide, and oxirane.
When a single dose of 2 mg labelled ethylene oxide in propanediol/kg body weight was applied intraperitoneally to rats, 43% of the administered radioactivity was excreted in the urine within 50 h (41% within 24 h) of exposure, 9% as S-(2- hydroxyethyl)cysteine and 33% as N-acetyl- S-(2-hydroxyethyl) cysteine, both products of glutathione conjugation. Via the lungs, 1.5% was excreted as carbon dioxide and 1% as unmetabolized ethylene oxide (Jones & Wells, 1981). The involvement of glutathione-epoxide- S-transferase (EC 4.4.1.7) has not been investigated further. In vitro glutathione conjugation of the homologue propylene oxide was shown to proceed only in the presence of an enzyme (Fjellstedt et al., 1973). In rabbits, no effect was found on liver- and blood-glutathione levels, after 12 weeks of exposure to concentrations of ethylene oxide at 18, 90, or 450 mg/m3, for 5 days per week, 6 h per day (Yager & Benz, 1982). As ethylene oxide can react with chloride ions, and this reaction is acid ...
AbstractIn the ethylene glycol generation unit of petrochemical plants, first a reaction of ethylene oxide takes place which is then followed by other side reactions. These reactions include water absorption with ethylene oxide, which leads to the generation of formaldehyde and acetaldehyde. Over the lifetime of the alpha-alumina-based silver catalyst there is an increase in side reactions, increasing the amount of the formaldehyde and acetaldehyde generated by the ethylene oxide reactor which leads to reduced MEG product purity. Given the need of a petrochemical complex to further strip the aldehyde (formaldehyde and acetaldehyde) to increase the quality of the MEG and increase the lifetime of the alpha-alumina-based silver catalyst, resin beds are designed and their surface absorption capacity is investigated to optimize aldehyde (formaldehyde and acetaldehyde) removal in the recirculating water flow of the ethylene oxide unit. Experiments show that the ion exchange system based on strong anionic
Erie, Pennsylvania 16501. Dear Mr. Rohleder:. This is in response to your inquiry of September 6, regarding procedures for ethylene oxide (EtO) spills and ethylene oxide disposal.. All spills should be immediately cleaned up with non-combustible adsorbent material that is readily available on the market. OSHA does not specify any one type of spill cleaning and adsorbing material or equipment; however, water should be used to wash down spill areas.. Since EtO is a gas at room temperature, you are dealing with the gaseous form of EtO predominantly in your work air that will not produce a spill. For example, when EtO leaks from a high pressure vessel, the EtO would be in a liquid form for only a short period of time as it leaks into the air. It then quickly equilibrates with the room air to form a gas. Both the gaseous and, when necessary, the liquid phase of EtO exposure must be taken into consideration.. See enclosed excerpts from appendices of 29 CFR 1910.1047 (Ethylene Oxide) which includes ...
BD Bard came under fire last summer, when a report was released correlating elevated cancer rates in the Covington area with the companys use of ethylene oxide, a gas that made the environmantal Protection Agencys list of gases that definitely cause cancer. In January, BD Bard was was ordered to pay the cities of Madison and Covington $65,000 each due to the companys previous violations in the production of ethylene oxide. Madison is home to one of the seven industrial plants in Georgia that use ethylene oxide. The spotlight fell on Madisons BD Bard plant after its sister plant in Covington was forced to shut down by the state when local officials detected elevated ethylene oxide emissions in the air-as high as 5,600 pounds a year. According to a court ruling in the case between BD Bard and the Georgia Environmental Protection Division (GEPD), BD Bard is mandated To mitigate the impact of these issues, BD Bard shall provide a grant of $65,000 to the city of Covington, Ga., and a grant of ...
United States Patent 3,450,658 GELATINIZABLE AQUEOUS SOLUTIONS OF POLY(ETHYLENE OXIDE) RESIN AS SIZING FOR TEXTILE FIBERS Charles R. W. Morison, Ossining, N.Y., assignor to Union Carbide Corporation, a corporation of New York No Drawing. Filed Jan. 11, 1066, Ser. No. 519,947 Int. Cl. C08g 51/24, 43/00; D06m 15/44 US. Cl. 260---29.2 11 Claims ABSTRACT OF THE DISCLOSURE A gelatinizable aqueous solution consisting essentially of water from 0.5 to 20 percent by weight of a poly (ethylene oxide) resin having a molecular weight of at least about 50,000 and at least one salt having an ion selected from the group consisting of ammonium ions, and multivalent anions containing only non-metallic elements. This invention relates to novel poly(ethylene oxide) compositions and to their use as sizing agents. More particularly this invention is concerned with gelatinizable aqueous solutions of high molecular weight poly(ethylene oxide) compounds and to their use in the sizing of fibers such as glass fibers. ...
EPA is addressing ethylene oxide based on the results of the latest National Air Toxics Assessment (NATA), which identified the chemical as a potential concern in several areas across the country. NATA is the Agencys nationwide air toxics screening tool, designed to help EPA and state, local and tribal air agencies identify areas, pollutants or types of sources for further examination.. The 2014 NATA uses emissions data from the latest National Emissions Inventory (2014 is the most recent data available), along with the latest scientific information on air toxics and health, to estimate long-term air toxics exposures and potential public health risk in census tracts across the United States.. NATA estimates long-term risks - those that may occur from breathing air containing elevated levels of air toxics continuously for many decades. It does not estimate short-term (acute) or intermediate risks. However, based on an examination of available data, EPA does not expect ethylene oxide levels in ...
This is the ICIS pricing methodology for ethylene oxide. ICIS quotes ethylene oxide prices in Europe and the US.. ICIS continuously develops, reviews and revises its methodologies in consultation with industry participants. Previous versions of this methodology can be found under Archived Documents.. To find out more, please see Ethylene Oxide Methodology - 22 April 2014. ...
Global Poly Ethylene Oxide Sales Market Research Report 2017 Global Poly Ethylene Oxide Sales Market Research Report 2017 Poly Ethylene Oxide Sales Report by Material, Application, - Market research report and industry analysis - 10831178
Ethylene oxide exposure levels and monitoring requirements are addressed in the Occupational Safety and Health Administrations (OSHA) recently published Small Business Guide for Ethylene Oxide. The...
The FDA organized regulators from public health agencies, medical device manufacturers and expert physicians gathering Wednesday November 6th and Thursday November 7th at a two-day meeting to discuss how to address challenges with ethylene oxide. The FDA is looking to determine if there is a viable alternative for large scale medical device sterilization. There are many determinants, but one is if there is an elimination of ethylene oxide, what the FDA can do to prevent device shortages if reduced sterilization capabilities come to pass. New concerns present many challenges to an industry, but offer many opportunities for advancement in the possible use of even greater technology as well ...
Ethylene OxideOVERVIEWEthylene oxide (ETH-ih-leen OK-side) is a flammable, colorless gas with the odor of ether. The gas is a cyclic compound, consisting of a ring of two carbon atoms and one oxygen atom. Each carbon atom also has two hydrogen atoms attached to it. Ethylene oxide was first prepared in 1859 by French chemist Charles Adolphe Wurtz (1817-1884). Source for information on Ethylene Oxide: Chemical Compounds dictionary.
MIME-Version: 1.0 ,Date: Mon, 19 Jul 1999 11:19:01 -0400 ,Reply-To: General Toxicology Discussions ,TOXLIST at esc_server.syrres.com, ,Sender: General Toxicology Discussions ,TOXLIST at esc_server.syrres.com, ,From: Jacqueline Patterson ,patterson at TERA.ORG, ,Organization: TERA ,Subject: Peer Review of Ethylene Oxide and NDMA ,Comments: To: riskanal at listserv.pnl.gov ,To: TOXLIST at esc_server.syrres.com , ,A peer review meeting will be held on August 12 in Ottawa, Ontario to ,discuss assessments on ethylene oxide and NDMA. A panel of expert ,scientists will review these assessments which have been written by ,Health Canada as part of the Priority Substances Program under the ,Canadian Environmental Protection Act. , ,The peer review panel is made up of experts from industry, government, ,consulting, and academia, creating a balanced panel, while carefully ,managing potential conflict of interest issues. The meeting will be ,open to the public. Observers must pre-register as space is ...
TY - JOUR. T1 - Stability of silicon and titanium carbide suspensions in electrolyte, poly(ethylene oxide), and PEO-surfactant solutions. AU - Bárány, S.. AU - Eremenko, Boris V.. AU - Malysheva, Mariya L.. PY - 2004/7/1. Y1 - 2004/7/1. N2 - It has been shown that the coagulation values of counterions for SiC and TiC suspensions with particle radius from 0.5 to 5 μm obey a z 2.5-3.5 law and there is an insufficient change in the critical concentration of 1-1 electrolytes (CCE) when the surface potential of particles increases more than two times. Also, the CCE values hardly depend on the position of counterions in the lyotropic sequence. This is explained by aggregation of SiC and TiC particles at a secondary minimum, which is proved by calculations of the potential curves of interparticle interactions using the DLVO theory. The adsorption of poly(ethylene oxide) on the surfaces studied does not cause - in contradiction to dispersions with smaller particles - an unlimited growth in the ...
WASHINGTON, DC - Today, Congressman Bill Foster (D-IL) and Congressman Sean Casten (D-IL) led a letter to the Acting Commissioner of the Food and Drug Administration (FDA) inquiring about the actions the FDA has taken, or plans to take, to examine and evaluate alternatives to ethylene oxide (EtO) sterilization methods in the United States. The letter was signed by all 13
Ethylene oxide. Molecular model of the cyclic ether ethylene oxide (C2.H4.O), also known as oxirane. This organic compound is a colourless flammable gas. It is used in the chemical industry for the synthesis of ethylene glycols. It is the simplest example of an epoxide. Atoms are represented as spheres and are colour-coded: carbon (grey), hydrogen (white) and oxygen (red). Illustration. - Stock Image F016/9739
Water-soluble, nonionic, relatively inert, liquids or solids. Confers slip and humectant properties to coatings. See poly(ethylene oxide) for higher molecular weights. The terms poly(ethylene glycol) and poly(ethylene oxide) refer to polymers which are chemically identical. Polymer chains are hydroxyl-terminated at both ends. At all except the lowest molecular weights poly(ethylene glycol) has a broad molecular weight distribution ranging from ~ 0.5x to 1.5x the values shown.. Soluble in: alcohol, acetone, chloroform, toluene, dichloromethane. PEG Learn More ...
Find featured Sterilization Ethylene Oxide products, suppliers and manufacturers products from Anhui_Anqing China on Industry Map
Large amounts of ethylene oxide are produced in the United States. Most of it is used to make other chemicals such as ethylene glycol, but smaller amounts are used as a pesticide or to sterilize medical equipment. Exposure to ethylene oxide can cause irritation of the eyes, skin, nose, throat, and lungs, and damage to the brain and nerves. It has been found at 3 of the 1,177 National Priorities List sites identified by the Environmental Protection Agency (EPA).
This invention relates to ethylene oxide catalyst for the vapor phase production of ethylene oxide from ethylene and oxygen prepared by impregnating a porous, refractory support having a surface area
The current outcry from communities that have been exposed to the carcinogen ethylene oxide has federal regulators and device makers seriously rethinking a question thats been hanging over the sterilization industry for decades: Can ethylene oxide be replaced?
Revise and reissue the NIOSH Alert: Preventing Worker Injuries and Deaths from Explosions at Industrial Ethylene Oxide Facilities (Publication No. 2002-119) in terms of the findings of this report. Specifically: - Add references to NFPA 68 Guide for Venting of Deflagrations; NFPA 69 Standard on Explosion Prevention Systems; NFPA 86 Ovens and Furnaces; and NFPA 560 Standard for the Storage, Handling, and Use of Ethylene Oxide for Sterilization and Fumigation.. ...
The drag reducing effect of poly(ethylene oxide) additives on blunt bodies in water was investigated by examining the behavior of a sphere in both subcritical and supercritical Reynolds number regions. Drop tests were conducted in water and in concentrations of poly(ethylene oxide) WSR 301 ranging in concentration from 50 wppm to 1000 wppm. Reduction in drag was noted for all concentrations in the Reynolds number range of 40,000 to 350,000. A critical Reynolds number of 450,000 was observed for dilute solutions (50 and 100 wppm), while more concentrated solutions exhibited a uniformly decreasing drag. These results are explained by examining the interaction of profile and friction drag, together with the effects of polymer additives upon wake diameter size. (Author)(*UNDERWATER VEHICLES
A six-dimensional potential energy hypersurface (PES) for two interacting rigid ethylene oxide (C{sub 2}H{sub 4}O) molecules was determined from high-level quantum-chemical ab initio calculations. The counterpoise-corrected supermolecular approach at the MP2 and CCSD(T) levels of theory was utilized to determine interaction energies for 10178 configurations of two molecules. An analytical site-site potential function with 19 sites per ethylene oxide molecule was fitted to the interaction energies and fine tuned to agree with data for the second acoustic virial coefficient from accurate speed of sound measurements. The PES was validated by computing the second virial coefficient, shear viscosity, and thermal conductivity. The values of these properties are substantiated by the best experimental data as they tend to fall within the uncertainty intervals and also obey the experimental temperature functions, except for viscosity, where experimental data are insufficient. Due to the lack of reliable ...
This manual is intended to provide general information to persons who may handle or store ethylene oxide. It includes information on the properties, health effects, environmental effects and hazards of Ethylene Oxide.
Dear all, Im designing a sterilization validation and, in general, a sterilization assurance system. All the products in range were reviewed by a qualified...
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LA Testing provides analytical services and sampling supplies to identify potentially hazardous chemical compounds to protect workers and the public.
Effectiveness of Microwave Sterilization on Three Hard Chairside Reline Resins. Neppelenbroek, Karin Hermana; Pavarina, Ana Cláudia; Spolidorio, Denise Madalena Palomari; Vergani, Carlos Eduardo; Mima, Ewerton Garcia de Oliveira; Machado, Ana Lúcia // International Journal of Prosthodontics;Nov/Dec2003, Vol. 16 Issue 6, p616 Purpose: The aim of this study was to evaluate the effectiveness of microwave irradiation sterilization on hard chairside reline resins. Materials and Methods: Specimens of three reline resins (Kooliner, Tokuso Rebase, and Ufi Gel Hard) were fabricated and subjected to ethylene oxide... ...
Medtech manufacturers Boston Scientific (Marlborough, MA) and 3M Health Care (St. Paul, MN), along with sterilization companies and industry associations, warn that an EPA draft conclusion stating that ethylene oxide (EO) can cause cancer in humans could, if finalized, seriously disrupt the ...
State lawmakers are debating two bills, one that would ban the use of ethylene oxide in densely populated areas or near schools, and another that would give home rule to communities.
Ethylene oxide (EtO) is a colorless, flammable gas. At very high levels, it smells like ether. EPA has classified ethylene oxide as an air toxic. It is a chemical ingredient used in solvents, antifreeze, textiles, and glues. It is also used to sterilize surgical equipment - particularly plastics that are difficult to sterilize with steam.. EPAs most recent National Air Toxics Assessment identified several locations that may have higher cancer risks from long-term exposure to ethylene oxide. Most of these places are close to where ethylene oxide is made or to industries that use the chemical.. Even though none of these locations are in Washington, Ecologys air quality monitoring station near downtown Seattle has found ethylene oxide. Based on this and on studies from other areas, we are following this as an emerging health concern.. ...
OSHA issued the company citations for three repeat violations for failing to provide adequate protection, training, monitoring, and emergency plans regarding employee exposure to ethylene oxide, a dangerous, colorless gas used in the sterilization process.
Federal regulators, medical device manufacturers, and sterilization companies are working on urgent measures to reduce the amount of ethylene oxide used in medical device sterilization processes without causing further shortages of sterile medical supplies.
Toluenediamine, ethylene oxide, propylene oxide polymer | C12H20N2O2 | CID 171877 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.
Reports emphasize developments in process technology for Propylene Oxide And Ethylene Oxide that have potential implications for the chemical and energy industries
0017] In some examples in accordance with the principles described herein, the detergent is a non-ionic detergent comprising a chain of at least 10 repeating ethylene oxide units or propylene oxide units or a combination of ethylene oxide and propylene oxide units. In some embodiments the chain is linear as opposed to branched. In some embodiments the non-ionic detergent comprises a chain of at least about 15, or at least about 20, or at least about 30, or at least about 35 repeating units as mentioned above. The number of repeating units in the chain is usually not greater than about 50, or not greater than about 45, or not greater than about 40, for example. When the chain comprises a combination of repeating ethylene oxide units and propylene oxide units, the ratio of ethylene oxide units to propylene oxide units is about 1:1, or about 2:1, or about 3:1, or about 1:2, or about 1:3, or about 1:4, or about 1:5, or about 1:6, or about 1:7, or about 1:8, for example. In the above embodiments the ...
Ethylene oxide (ETO) is a sterilant gas considered to be a human carcinogen, due primarily to excess hematopoietic cancer in exposed cohorts. ETO causes mammary tumors in mice, and has been associated with breast cancer incidence in one small epidemiologic study. We have studied breast cancer incidence in a cohort of 7576 women employed for at least one year and exposed for an average 10.7 years w
Mutants of toluene o-xylene monooxygenase are demonstrated to oxidize ethylene to ethylene oxide in vivo at yields of |99%. The best mutant increases ethylene oxidation activity by |5500-fold relative to the native enzyme. This is the first report of a recombinant enzyme capable of carrying out this industri Directed Evolution
Ethylene oxide process diagram[edit]. Hello Daniele I study chemical engineering and I have been seeing your work about ... The information source is: "Ethylene Oxide", Ullmann's Encyclopedia of Industrial Chemistry (2002), chapter 4. I created by ... ethylene oxide process diagram and i would like to know where did you find the information to make that. Thanks for your healp ...
Ethylene oxide. *Friedel family, a rich lineage of French scientists. *Hydrodealkylation. *Transalkylation ...
Thus, the epoxide of ethylene (C2H4) is ethylene oxide (C2H4O). Many compounds have trivial names; for instance, ethylene oxide ... For example ethylene oxide polymerizes to give polyethylene glycol, also known as polyethylene oxide. The reaction of an ... Benzene oxide exists in equilibrium with the oxepin isomer. Ethylene oxide is widely used to generate detergents and ... The dominant epoxides industrially are ethylene oxide and propylene oxide, which are produced respectively on the scales of ...
Common causes of irritant contact dermatitis include solvents, metalworking fluids, latex, kerosene, ethylene oxide, paper, ... ethylene oxide; surfactants in topical medications and cosmetics (sodium lauryl sulfate); and alkalis (drain cleaners, strong ... A barrier cream, such as those containing zinc oxide (e.g., Desitin, etc.), may help protect the skin and retain moisture. If ...
The odor threshold for these gases is above the PELs and for ethylene oxide it is 500 ppm, approaching that of the IDLH. Odor ... The OSHA PEL (permissible exposure limit) will be considerably lower than this; 1 ppm for ethylene oxide, or 5 ppm for a 15 ... In addition to toxicity, ethylene oxide is flammable (from above 3%) and ozone is damaging to equipment not designed to resist ... "Ethylene Oxide". Medical Management Guidelines (MMGs). ATSDR. "Manufacturer and User Facility Device Experience Database". FDA ...
"Ethylene Oxide Sterilization , Disinfection & Sterilization Guidelines , Guidelines Library , Infection Control ,CDC". www.cdc. ... However, sterilant alkylating agents such as ethylene oxide (ETO), and 10% bleach are effective against endospores. To kill ... ethylene oxide sterilizers. ETO is the only low-temperature sterilant to stop outbreaks on these instruments.[17] In contrast ...
Ethylene oxide gas has been used since the 1950s for heat- and moisture-sensitive medical devices. Within the past 15 years, a ... Ethylene oxide treatment is generally carried out between 30 and 60 °C (86 and 140 °F) with relative humidity above 30% and a ... Ethylene oxide (EO, EtO) gas treatment is one of the common methods used to sterilize, pasteurize, or disinfect items because ... Ethylene oxide is still widely used by medical device manufacturers. Since EO is explosive at concentrations above 3%, EO was ...
"ethylene_oxide.pdf" (PDF). Archived from the original (PDF) on March 21, 2012. "h2o2.pdf" (PDF). Archived from the original ( ... One newer monopropellant under development is nitrous oxide, both neat and in the form of nitrous oxide fuel blends. Nitrous ... ethylene oxide, hydrogen peroxide (especially in its German World War II form as T-Stoff), and nitromethane are common rocket ... Nitrous oxide generates oxygen upon decomposition, and it is possible to blend it with fuels to form a monopropellant mixture ...
Ethylene Oxide". Bulletin of the American Astronomical Society 29: 1245. http://www.journals.uchicago.edu/cgi-bin/resolve?id= ... "Ethylene in IRC +10216". Astrophysical Journal, Part 2 - Letters to the Editor 244: -L105. http://adsabs.harvard.edu/abs/ ... "Detection of nitric oxide in the dark cloud L134N". Astrophysical Journal, Part 1 359: 121-124. http://adsabs.harvard.edu/abs/ ...
Poly(ethylene oxide) or PEO Poly(oxyethylene) Poly(oxyethene) Poly(ethylene terephthalate) or PET Poly(oxy-1,2- ... The monomers are terephthalic acid (HOOC-C6H4-COOH) and ethylene glycol (HO-CH2-CH2-OH) but the repeating unit is -OC-C6H4-COO- ... Ethylene-vinyl acetate contains more than one variety of repeat unit and is a copolymer. Some biological polymers are composed ... A simple example is polyethylene ('polythene' in British English), whose repeating unit is based on ethylene monomer. Many ...
The core can than be reacted with ethylene oxide to create a star-shaped polymer. As is typical of most core-first approaches, ... ethylene oxide)". Die Makromolekulare Chemie. 189 (12): 2885-2892. doi:10.1002/macp.1988.021891215. Xue, L.; Agarwal, U. S.; ...
Fenton, D.E.; Parker, J.M.; Wright, P.V. (November 1973). "Complexes of alkali metal ions with poly(ethylene oxide)". Polymer. ... Wright, Peter V. (September 1975). "Electrical conductivity in ionic complexes of poly(ethylene oxide)". British Polymer ... GRAY, F; MACCALLUM, J; VINCENT, C (January 1986). "Poly(ethylene oxide) - LiCF3SO3 - polystyrene electrolyte systems". Solid ... ethylene oxide) adducts". Solid State Ionics. 11 (1): 91-95. doi:10.1016/0167-2738(83)90068-1. Lin, Dingchang; Liu, Wei; Liu, ...
Ethylene Ethylene oxide Fat/lean DEA/MEA; High pressure steam (pressure in excess of 5000 kPa (ga)) Hydraulic Oil Hydrogen ( ... ethylene and other unsaturated hydrocarbons may decompose explosively, initiated by a welding hot spot. Oxygen-enriched ... partial pressure in excess of 700 kPa (ga)) Hydrogen sulphide* Hydrofluoric acid Oxygen Propene Propene oxide Sulphuric acid ...
... examples of chemical commodities are ammonia and ethylene oxide; speciality chemicals (or specialty chemicals): are constituted ... Some examples of basic chemicals are: ethylene, benzene, chlorine and sulfuric acid. High Production Volume (HPV) Chemicals is ...
It may be, for example, a compound of lithium bis(fluorosulfonyl)imide (LiFSI) and high molecular weight poly(ethylene oxide) ( ... ethylene oxide) (PEO), poly(acrylonitrile) (PAN), poly(methyl methacrylate) (PMMA) or poly(vinylidene fluoride) (PVdF). The ... ethylene oxide) polymer electrolyte". Electrochimica Acta. 133: 529-538. doi:10.1016/j.electacta.2014.04.099. Sun, Bing; ... In addition to this, the positive electrode can be further divided into three parts: the lithium-transition-metal-oxide (such ...
Polyethylene, polysiloxanes and poly(ethylene oxide) are all macromonomers that have been incorporated in a polystyrene or poly ... ethylene oxide) Macromonomers in Radical Copolymerization". Polymer Journal. 17 (7): 827-839. doi:10.1295/polymj.17.827. Gupta ... Grutke, Stefan; Hurley, James H.; Risse, Wilhelm (August 1994). "Poly(phenylene oxide) macromonomers for graft copolymer ... Graft copolymer-metal complexes obtained by radiation grafting onto poly(tetrafluoroethylene-ethylene) copolymer". Journal of ...
Europe: September 2020: sesame seeds contamination by ethylene oxide. Canada: October 2020: Certain lots of Cottonelle-branded ...
Ethylene oxide is the alkylating group in this reaction. In the process called oxidative addition, low-valent metals often ... Silicotungstic acid is used to manufacture ethyl acetate by the alkylation of acetic acid by ethylene: C2H4 + CH3CO2H → ...
Wright, P. V. (1975). "Electrical conductivity in ionic complexes of poly(ethylene oxide)". British Polymer Journal. 7 (5): 319 ... Later in 1933, Wagner suggested that in metal oxides an excess of metal would result in extra electrons, while a deficit of ... Solid-state ionic devices, such as solid oxide fuel cells, can be much more reliable and long-lasting, especially under harsh ... doi:10.1016/0167-2738(83)90083-8. Liang, C. C. (1973). "Conduction Characteristics of the Lithium Iodide-Aluminum Oxide Solid ...
It also oxidises nitrogen oxide, ethylene, and hydrogen sulfide. It reacts with sulfur trioxide and peroxydisulfuryl difluoride ... Iodine oxides are the most stable of all the halogen oxides, because of the strong I-O bonds resulting from the large ... Iodides can be made by reaction of an element or its oxide, hydroxide, or carbonate with hydroiodic acid, and then dehydrated ... A few other less stable oxides are known, notably I4O9 and I2O4; their structures have not been determined, but reasonable ...
Materials made of PDS can be sterilized with ethylene oxide. Other biodegradable polymers: polycaprolactone polyglycolide ...
DEG is produced by the partial hydrolysis of ethylene oxide. Depending on the conditions, varying amounts of DEG and related ... Most ethylene glycol antifreeze contains a few percent diethylene glycol, present as an byproduct of ethylene glycol production ... Counterfeit medications Ethylene Ethylene glycol poisoning Polyethylene glycol Schep LJ, Slaughter RJ, Temple WA, Beasley DM ( ... Diethylene glycol is one of several glycols derived from ethylene oxide. Glycols related to and coproduced with diethylene ...
Sterilization can also be achieved using ethylene oxide (ETO) gas. This process was created in the 1950s by the US military and ...
Process technology to produce ethanolamines by reaction of ammonia and ethylene oxide CDC - NIOSH Pocket Guide to Chemical ... Monoethanolamine is produced by treating ethylene oxide with aqueous ammonia; the reaction also produces diethanolamine and ... 7. Oxidation Products of Ethylene". Industrial Organic Chemistry. Wiley-VCH. pp. 159-161. ISBN 3-527-30578-5. "Archived copy". ...
... ethylene oxide, and isoprene. Most of these compounds cause DNA damage by forming DNA adducts or by inducing other alterations ...
Ethylene oxide 7.0 Hydroxyethyl DNA adducts with adenine and guanine [196]. Isoprene 952.0 Single and double strand breaks in ... Tompkins EM, McLuckie KI, Jones DJ, Farmer PB, Brown K (2009). "Mutagenicity of DNA adducts derived from ethylene oxide ... "Nitric oxide mediates a therapeutic effect of nicotine in ulcerative colitis". Alimentary Pharmacology & Therapeutics. 14 (11 ...
Ethylene oxide 7.0 Hydroxyethyl DNA adducts with adenine and guanine [79]. Isoprene 952.0 Single and double strand breaks in ... Tompkins EM, McLuckie KI, Jones DJ, Farmer PB, Brown K (2009). "Mutagenicity of DNA adducts derived from ethylene oxide ...
Ethylene oxide 7.0 Hydroxyethyl DNA adducts with adenine and guanine [155]. Isoprene 952.0 Single and double strand breaks in ... Tompkins EM, McLuckie KI, Jones DJ, Farmer PB, Brown K (2009). "Mutagenicity of DNA adducts derived from ethylene oxide ... Green, J. T.; Richardson, C.; Marshall, R. W.; Rhodes, J.; McKirdy, H. C.; Thomas, G. A.; Williams, G. T. (2000). "Nitric oxide ...
... s are much broader than the oligomers of ethylene oxide; an important group are derived from catechol. Crown ethers ... The most common crown ethers are cyclic oligomers of ethylene oxide, the repeating unit being ethyleneoxy, i.e., -CH2CH2O-. ...
... called Ethylene Oxide to sterilize medical equipment. According to the EPA fact sheet, 'Long-term exposure to ethylene oxide ... Studies show that breathing air containing elevated ethylene oxide levels over many years increases the risk of some types of ... www.chicagotribune.com/news/environment/ct-sterigenics-ends-ethylene-oxide-operation-willowbrook-20190930- ... "Fact Sheet: EPA Taking Steps to Address Emissions of Ethylene Oxide". EPA.gov. Retrieved September 20, 2018. https:// ...
Other coatings, such as conductive indium tin oxide (ITO), can be applied to boPET film by sputter deposition. ... "Specifications for Polyester: Poly(ethylene-terephthalate)". Preservation. Library of Congress. Archived from the original on ...
Ethylene oxide. *Hexatriynyl radical. *Methylacetylene. *மெதிலமீன். *மீத்தைல் ஐசோசயனேட்டு. *வினைல் ஆல்ககால். எட்டு அணுக்கள். * ...
Soluble ash content can be very important for aquarists, as ferric oxide can promote algal growths. A carbon with a low soluble ... ethanol or ethylene glycol.[6] Activated carbon will not prevent these chemicals from being absorbed into the human body.[7] It ... The metal oxides (Fe2O3) can leach out of activated carbon resulting in discoloration. Acid/water-soluble ash content is more ...
The initial doses of premazepam given to human test subjects demonstrated similar psychological test results to those produced by diazepam. It was also demonstrated that initial dosing with premazepam produces similar sedative effects as compared with diazepam, although psychomotor impairments are greater with premazepam than with diazepam after initial dosing. However, with repeated dosing for more than one day premazepam causes less sedation and less psychomotor impairment than diazepam. Premazepam possesses sedative and anxiolytic properties. Premazepam produces more slow wave and less fast wave EEG changes than diazepam. Tests have shown that 7.5 mg of premazepam is approximately equivalent to 5 mg of diazepam.[2] ...
He thought the compound had a heptoxdiazine structure (Figure 7) but it was later determined to be a quinazoline-3-oxide. ...
... is sometimes used as source of acetylene gas, which is a ripening agent similar to ethylene.[18] However, this ... calcium oxide), Ca3P2 (calcium phosphide), CaS (calcium sulfide), Ca3N2 (calcium nitride), SiC (silicon carbide), etc.). In the ... Today acetylene is mainly manufactured by the partial combustion of methane or appears as a side product in the ethylene stream ... "Abscission: The Role of Ethylene, Ethylene Analogues, Carbon Dioxide, and Oxygen". Plant Physiol. 43 (8): 1255-1258. doi ...
Ethylene oxide. *Glycolonitrile. *Hexatriynyl radical. *Methylacetylene. *Methylamine. *Methyl isocyanate. *Vinyl alcohol. ...
Research also shows that Scutellaria root modulates inflammatory activity in vitro to inhibit nitric oxide (NO), cytokine, ...
Ethylene oxide. *Glycolonitrile. *Hexatriynyl radical. *Methylacetylene. *Methylamine. *Methyl isocyanate. *Vinyl alcohol. ...
Ethylene oxide. *Glycolonitrile. *Hexatriynyl radical. *Methylacetylene. *Methylamine. *Methyl isocyanate. *Vinyl alcohol. ...
Nitric oxide signaling modulators. Forms. *Nitroxyl anion (NO−; oxonitrate(1-), hyponitrite anion) ... Ethylene glycol dinitrate (EGDN; nitroglycol). *Isosorbide mononitrate (ISMN). *Isosorbide dinitrate (ISDN). *Itramin tosilate ...
Ethylene oxide. *Hexatriynyl radical. *Methylacetylene. *Methylamine. *Methyl isocyanate. *Vinyl alcohol. Eight. atoms. *Acetic ...
Ethylene oxide. *Hexatriynyl radical. *Methylacetylene. *Methylamine. *மீத்தைல் ஐசோசயனேட்டு. *வினைல் ஆல்ககால். எட்டு அணுக்கள். ...
... is the cyclic trimer of acetaldehyde molecules.[2] Formally, it is a derivative of 1,3,5-trioxane. The corresponding tetramer is metaldehyde. A colourless liquid, it is sparingly soluble in water and highly soluble in ethanol. Paraldehyde slowly oxidizes in air, turning brown and producing an odour of acetic acid. It quickly reacts with most plastics and rubber. Paraldehyde was first observed in 1835 by the German chemist Justus Liebig; its empirical formula was determined in 1838 by Liebig's student Hermann Fehling.[3][4] Paraldehyde was first synthesized in 1848 by the German chemist Valentin Hermann Weidenbusch (1821-1893), another student of Liebig; he obtained paraldehyde by treating acetaldehyde with acid (either sulfuric or nitric acid).[5][6] It has uses in industry and medicine. ...
... with both using nickel oxide hydroxide (NiOOH). However, the negative electrodes use a hydrogen-absorbing alloy instead of ... a further improvement over the hydrophilic polyolefin based on ethylene vinyl alcohol.[32] ...
... is generally considered a non-polar solvent. Owing to the good polarizability of the chlorine atoms, it is a superior solvent for organic compounds that do not dissolve well in hydrocarbons such as hexane. It is an excellent solvent for many organic materials and also one of the least toxic of the chlorinated hydrocarbons. Prior to the Montreal Protocol, it was widely used for cleaning metal parts and circuit boards, as a photoresist solvent in the electronics industry, as an aerosol propellant, as a cutting fluid additive, and as a solvent for inks, paints, adhesives, and other coatings. 1,1,1-Trichloroethane is also used as an insecticidal fumigant. It was also the standard cleaner for photographic film (movie/slide/negatives, etc.). Other commonly available solvents damage emulsion, and thus are not suitable for this application. The standard replacement, Forane 141 is much less effective, and tends to leave a residue. 1,1,1-Trichloroethane was used as a thinner in ...
... ethylene oxide and benzene at levels 100 times higher than those created to make the same amount of glass.[13] ...
Two oxides of germanium are known: germanium dioxide (GeO. 2, germania) and germanium monoxide, (GeO).[28] The dioxide, GeO2 ... Thiele, Ulrich K. (2001). "The Current Status of Catalysis and Catalyst Development for the Industrial Process of Poly(ethylene ... Germanium oxide is a dopant of the core silica (Item 1).. 1. Core 8 µm. 2. Cladding 125 µm. 3. Buffer 250 µm. 4. Jacket 400 µm ... The ore concentrates are mostly sulfidic; they are converted to the oxides by heating under air in a process known as roasting ...
Weaker oxidants, such as ferric oxide or hydrogen peroxide give the disulfide, diethyl disulfide: 2 EtSH + H2O2 → EtS-SEt + 2 H ... Ethanethiol is prepared by the reaction of ethylene with hydrogen sulfide over a catalyst. The various producers utilize ...
a b Dalton PD, Calvet J-L, Mourran A, Klee D, Möller M (2006) Melt Electrospinning of poly(ethylene oxide-block-ε-caprolactone ...
2 to create ethylene oxide, which, in turn, is converted into ethylene glycol; the primary feeder material used to manufacture ... 2, as found in granite and quartz), aluminium (aluminium oxide Al. 2O. 3, in bauxite and corundum), iron (iron(III) oxide Fe. 2 ... Oxides and other inorganic compounds. Water (H. 2O) is an oxide of hydrogen and the most familiar oxygen compound. Hydrogen ... Organic compounds important in industry and commerce that are made by direct oxidation of a precursor include ethylene oxide ...
InChI=1S/C48H74O14.C47H72O14/c1-11-25(2)43-28(5)17-18-47(62-43)23-34-20-33(61-47)16-15-27(4)42(26(3)13-12-14-32-24-55-45-40(49)29(6)19-35(46(51)58-34)48(32,45)52)59-39-22-37(54-10)44(31(8)57-39)60-38-21-36(53-9)41(50)30(7)56-38;1-24(2)41-27(5)16-17-46(61-41)22-33-19-32(60-46)15-14-26(4)42(25(3)12-11-13-31-23-54-44-39(48)28(6)18-34(45(50)57-33)47(31,44)51)58-38-21-36(53-10)43(30(8)56-38)59-37-20-35(52-9)40(49)29(7)55-37/h12-15,19,25-26,28,30-31,33-45,49-50,52H,11,16-18,20-24H2,1-10H3;11-14,18,24-25,27,29-30,32-44,48-49,51H,15-17,19-23H2,1-10H3/b13-12+,27-15+,32-14+;12-11+,26-14+,31-13+/t25-,26-,28-,30-,31-,33+,34-,35-,36-,37-,38-,39-,40+,41-,42-,43+,44-,45+,47+,48+;25-,27-,29-,30-,32+,33-,34-,35-,36-,37-,38-,39+,40-,41+,42-,43-,44+,46+,47+/m00/s1 ...
2 to create ethylene oxide, which, in turn, is converted into ethylene glycol; the primary feeder material used to manufacture ... 2, as found in granite and quartz), aluminium (aluminium oxide Al. 2O. 3, in bauxite and corundum), iron (iron(III) oxide Fe. 2 ... Oxides and other inorganic compounds. Water (H. 2O) is an oxide of hydrogen and the most familiar oxygen compound. Hydrogen ... Organic compounds important in industry and commerce that are made by direct oxidation of a precursor include ethylene oxide ...
In the United States and Europe, approximately 90% of ethylene is used to produce ethylene oxide, ethylene dichloride, ... Main industrial uses of ethylene. Clockwise from the upper right: its conversions to ethylene oxide, precursor to ethylene ... names like ethylene oxide and ethylene dibromide are permitted, but the use of the name ethylene for the two-carbon alkene is ... Ethylene is oxidized to produce ethylene oxide, a key raw material in the production of surfactants and detergents by ...
In ethylene there is a double bond between the carbon atoms (and thus each carbon only has two hydrogens), therefore the ... Iron(II) oxide. *Magnesium monohydride cation. *Methylidyne radical. *Nitric oxide. *Nitrogen (molecular) ...
... , also known as validolum, is the menthyl ester of isovaleric acid. It is a transparent oily, colorless liquid with a smell of menthol. It is very slightly soluble in ethanol, while practically insoluble in water. It is used as a food additive for flavor and fragrance.[1] ...
Ethylene oxide is the alkylating group in this reaction. Oxidative addition to metalsEdit. In the process called oxidative ... Silicotungstic acid is used to manufacture ethyl acetate by the alkylation of acetic acid by ethylene:[6] ... Typical route for alkylation of benzene with ethylene and ZSM-5 as a heterogeneous catalyst ...
... which releases CO and leaves behind zinc oxide and calcium oxide:. Zn + CaCO3 → ZnO + CaO + CO. Silver nitrate and iodoform ... Carbon monoxide is also a byproduct of the reduction of metal oxide ores with carbon, shown in a simplified form as follows:. ... Carbon monoxide can also be produced by high-temperature electrolysis of carbon dioxide with solid oxide electrolyzer cells:[72 ... Carbon monoxide strips oxygen off metal oxides, reducing them to pure metal in high temperatures, forming carbon dioxide in the ...
Exposure to ethylene oxide may cause headache, nausea, vomiting, diarrhea, breathing difficulty, drowsiness, weakness, ... Ethylene oxide (C₂H₄O) is a flammable gas with a somewhat sweet odor. ... IARC Monographs (Vol 100F): Ethylene Oxidepdf iconexternal icon. *IARC Monographs (Vol 97): Ethylene Oxidepdf iconexternal icon ... Ethylene oxide (C₂H₄O) is a flammable gas with a somewhat sweet odor. Exposure to ethylene oxide may cause headache, nausea, ...
Ethylene Oxide Hemoglobin Adduct (2013 - 2016). Demographic. (Category). Survey. Years. Geometric Mean. (95% CI). 50th ... Ethylene Oxide Hemoglobin Adduct (2013 - 2016). Demographic. (Category). Survey. Years. Geometric Mean. (95% CI). 50th ... Ethylene oxide hemoglobin adducts were measured in blood from random subsamples of NHANES participants. Hemoglobin adducts were ... Ethylene Oxide Hemoglobin Adduct Concentrations Among Non-smokers - National Health and Nutrition Examination Survey, 2013-16. ...
Shell chemicals companies are among the largest global producers of ethylene oxide, with facilities in Europe, the US and Asia ... Ethylene oxide. Shell chemicals companies are among the largest global producers of high purity ethylene oxide, a versatile ... High Purity Ethylene oxide (HPEO) is a colourless, highly reactive and flammable gas at room temperature. It is produced by ... Leading position in ethylene oxide/glycol technology and licensing - Shell proprietary technology is used to make almost half ...
Exposure to ethylene oxide can cause irritation of the eyes, skin, nose, throat, and lungs, and damage to the brain and nerves ... Most of it is used to make other chemicals such as ethylene glycol, but smaller amounts are used as a pesticide or to sterilize ... Large amounts of ethylene oxide are produced in the United States. ... Very small amounts of ethylene oxide can be found in nature.. Ethylene oxide is used mostly to make ethylene glycol (a chemical ...
Ethylene oxide was first prepared in 1859 by French chemist Charles Adolphe Wurtz (1817-1884). Source for information on ... Ethylene OxideOVERVIEWEthylene oxide (ETH-ih-leen OK-side) is a flammable, colorless gas with the odor of ether. The gas is a ... Ethylene Oxide. OVERVIEW. Ethylene oxide (ETH-ih-leen OK-side) is a flammable, colorless gas with the odor of ether. The gas is ... The largest single use of ethylene oxide is in the manufacture of ethylene glycol (CH2OHCH2OH), which itself is used as an ...
Media in category "Ethylene oxide". The following 62 files are in this category, out of 62 total. ... Retrieved from "https://commons.wikimedia.org/w/index.php?title=Category:Ethylene_oxide&oldid=310731969" ...
Ethylene Oxide Emission Plan Called Weak. By Andy Miller, Brenda Goodman, MA ... The Environmental Protection Agency has proposed its first of two new rules to curb emissions of cancer-causing ethylene oxide. ...
... or ethylene oxide), and thiirane, respectively-and their derivatives can all be prepared by nucleophilic reactions, of the type ... Other articles where Ethylene oxide is discussed: heterocyclic compound: Three-membered rings: …oxygen, and sulfur-aziridine, ... The simplest epoxide, ethylene oxide (oxirane), is obtained by passing a mixture of ethylene and air (or oxygen) over a heated ... a hydroxyl (OH) group, with ethylene oxide or propylene oxide. The most usual compounds are either alkylphenol or a long-chain ...
Gallegos, E.J.; Kiser, R.W., Electron impact spectroscopy of ethylene oxide and propylene oxide, J. Am. Chem. Soc., 1961, 83, ... Mass spectrometry of reasonance capture of electrons and photoelectron spectroscopy of molecules of ethylene oxide, ethylene ... Lowrey, A., III; Watanabe, K., Absorption and ionization coefficients of ethylene oxide, J. Chem. Phys., 1958, 28, 208. [all ... Johnson, K.; Powis, I.; Danby, C.J., A photoelectron-photoion coincidence study of acetaldehyde and ethylene oxide molecular ...
2433; Merpol; NCI-C50088; «alpha»,«beta»-Oxidoethane; Oxiraan; Oxiran; Rcra waste number U115; Sterilizing gas ethylene oxide ... Other names: Oxirane; Dihydrooxirene; Dimethylene oxide; Epoxyethane; Ethene oxide; ETO; Oxacyclopropane; Oxane; Oxidoethane; ...
About ethylene oxide sterilization for medical devices and FDAs role in assuring that medical devices sterilized with ethylene ... FDA Innovation Challenge 2: Reduce Ethylene Oxide Emissions. Why Is Ethylene Oxide Used to Sterilize Medical Devices?. Medical ... Ethylene Oxide Sterilization Master File Pilot Program. On November 25, 2019, the FDA announced its Ethylene Oxide ... Learn more about the risks of ethylene oxide on the National Institutes of Health web page on ethylene oxide. ...
... DESCRIPTION At a sterilization plant, bypassing a safety interlock has catastrophic ... Ethylene Oxide Explosion at Sterigenics is categorized in the following disciplines: * Workforce Development/Fire Safety/Fire ... You just viewed Ethylene Oxide Explosion at.... Please take a moment to rate this material. ...
Ethylene oxide (EtO) is produced in large volumes and is primarily used as an intermediate in the production of several ... Exposures to ethylene oxide are addressed in specific OSHA standards for general industry, maritime, and construction. ... OSHAs Small Business Guide for Ethylene Oxide (PDF). OSHA Publication 3359, (April 2009). Provides guidance to help employers ... OSHAs Small Business Guide for Ethylene Oxide (PDF). OSHA Publication 3359, (April 2009). Provides guidance to help employers ...
Ethylene oxide is a man-made chemical that is used primarily to make ethylene glycol (a chemical used to make antifreeze and ... Ethylene oxide is a flammable gas with a somewhat sweet odor. It dissolves easily in water. ... Summary: Ethylene oxide is a flammable gas with a somewhat sweet odor. It dissolves easily in water. Ethylene oxide is a man- ... made chemical that is used primarily to make ethylene glycol (a chemical used to make antifreeze and polyester). A small amount ...
What is ethylene oxide?. Its mostly used to sterilize medical equipment and create other chemicals, but also is associated ... In recent years, the United States Environmental Protection Agency updated its classification for ethylene oxide from "Likely ... The risks are reported to be driven by one chemical - ethylene oxide. ... But what exactly is ethylene oxide, and why is it so concerning? ... could come from exposure to ethylene oxide as well. ...
... of the worlds Ethylene Oxide catalysts and is on the leading-edge of HA, HS catalysts solutions. ... Ethylene Oxide Catalysts. Shell Catalysts & Technologies has been reinventing ethylene oxide catalyst possibilities for more ... The most important measure of ethylene oxide catalyst performance is selectivity, defined as the molar yield of ethylene oxide ... Ethylene Oxide/Ethylene Glycol (EO/EG) Process Technology Shell Catalysts & Technologies offers an extensive range of EO ...
Background Information: Ethylene Oxide in Willowbrook, IL. This page provides access to a packet of background information on ... Ethylene Oxide in Willowbrook, IL (PDF)(2 pp, 153 K) * Assessing Air Pollution: Ambient Air Monitoring and Emissions Stack ... Ethylene Oxide in Willowbrook, IL, and EPAs programs to assess and control air pollution from stationary sources like ...
... ethylene oxide, FDA, sterigenics, U.S. Environmental Protection Agency. 600 new ethylene oxide lawsuits filed against ... ethylene oxide. Cardinal Health subsidiary faces federal lawsuit over EtO plant in Georgia. July 22, 2021. By Chris Newmarker ... CDC: Ethylene oxide may have more health effects than cancer. October 1, 2020. By Nancy Crotti ... Federal rule on ethylene oxide now delayed until 2021. September 29, 2020. By Nancy Crotti ...
Ethylene Oxide Monitor 3551 uses the proven scientific principle of diffusion, which is the gradual mixing of molecules of two ... 3M™ Ethylene Oxide Monitor 3551, 5 EA/Case. 3M Product Number 3551, 3M ID 70070071397, UPC 50021200601878 ... The 3M™ Ethylene Oxide Monitor 3551 uses the proven scientific principle of diffusion, which is the gradual mixing of molecules ... The 3M™ Ethylene Oxide Monitor 3551 uses the proven scientific principle of diffusion, which is the gradual mixing of molecules ...
... is a leading source of product stewardship and regulatory information on ethylene oxide. ... The Ethylene Oxide Panel of the American Chemistry Council (ACC) ... What is Ethylene Oxide? * Ethylene Oxide Frequently Asked ... ACC Testimony Before Illinois General Assembly on Ethylene Oxide, October 2019 * Ethylene Oxide Safety Facts: Information on ... The Ethylene Oxide Panel of the American Chemistry Council (ACC) is a leading source of product stewardship and regulatory ...
Ethylene Oxide and Ethylene Glycol 08 February, 2018 Requirements: Minimum Diploma in relevant Engineering Discipline from ... Panelman - Ethylene Oxide and Ethylene Glycol Oil & Gas Company in Pengerang Johor, Malaysia Featured Employer Pengerang, Johor ...
The Nitrous Oxide Ethane-Ethylene (NEE) engine is a proposed technology designed to provide spacecraft with non-toxic non- ... With the NEE engine, nitrous oxide is used as an autogenously pressurizing oxidizer, and a mixture of ethane and ethylene is ... Initially, the ethane and ethylene mixture have the same vapor pressure as the nitrous oxide. By utilizing the autogenous ... Pioneer Astronautics has demonstrated monopropellant nitrous oxide thrusters with a specific impulse of 190 s. Using such ...
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice ...
Ethylene oxide. Regulatory process names 1 Translated names 39 IUPAC names 17 Trade names 45 Other identifiers 11 ...
J.B. Pritzker is ready to sign a pair of ethylene oxide regulatory bills should the General Assembly pass them, a ... "We have a background level of ethylene oxide present in our bodies at all times," White said. "Were always going to be exposed ... J.B. Pritzker is ready to sign a pair of ethylene oxide regulatory bills should the General Assembly pass them, a ... One of those bills would allow home-rule municipalities to ban ethylene oxide emissions in their communities, and the other ...
Ethylene oxide (EHC 55, 1985) Ethylene oxide (HSG 16, 1988) Ethylene oxide (ICSC) ETHYLENE OXIDE (JECFA Evaluation) Ethylene ... oxide (FAO Meeting Report PL/1965/10/2) Ethylene oxide (FAO/PL:1968/M/9/1) Ethylene oxide (CICADS 54, 2003) Ethylene Oxide ( ... ethylene oxide in commercial practice. REFERENCES Brown, D. J. (1970) Determination of ethylene oxide and ethylene chlorohydrin ... ethylene chlorohydrin and ethylene glycol. Stijve (1969) examined a variety of foods treated with ethylene oxide for ethylene ...
Environmental Sensors Co.s Ethylene Oxide Meter is a hand held instrument that ... ... Handheld Ethylene Oxide Meter by Environmental Sensors Company. ... handheld ethylene oxide meter ethylene oxide monitor ethylene ... Environmental Sensors Co.s Ethylene Oxide Meter is a hand held instrument that measures ethylene oxide concentration in a ... ESC - Model Z-100 - Handheld Ethylene Oxide Meter From Ethylene Oxide Monitoring ...
Ethylene Oxide Monitoring for Workplace Health and Safety - Health and Safety - Health and Safety Monitoring and Testing by ... ethylene oxide monitoring ethylene oxide monitor safety monitoring workplace health ethylene monitoring workplace safety ... Ethylene Oxide Monitoring for Workplace Health and Safety - Health and Safety - Health and Safety Monitoring and Testing ... ESC - Z-100 - Handheld Ethylene Oxide Meter * ESC - Z-100XP - Portable Desktop Ethylene Oxide Monitor ...

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