Presence vinyl compounds. Medical search. Frequent questions

Ionization detectors are broad spectrum devices used to detect primarily volatile organic compounds, although some models of photoionization detectors may detect some inorganic compounds. (cdc.gov)
During the initial site visit, employee interviews were conducted, a questionnaire was administered to plastics department employees, the manufacturing process and work practices were observed, company records were reviewed, and air samples were collected for vinyl toluene, styrene, metals, particle characterization, and volatile organic compounds. (cdc.gov)
Ozonolysis of Citral can produce low volatile organic compounds, which can form SOA. (aaqr.org)
In the early 1980s, it was revealed that the drinking water at Camp Lejeune was contaminated with dangerous levels of toxic chemicals, including volatile organic compounds, vinyl chloride, and other carcinogens. (rosenfeldinjurylawyers.com)
Compared to other materials, like vinyl, that has VOCs (Volatile Organic Compounds) and is harmful to health, fiber cement is made of natural products. (straitsresearch.com)
However, it should be noted that SCAs cause increment in the volatile organic compounds (VOCs) that attracted attention of the international community to this issue33. (all-heatexchangers.nl)
Isoprene and monoterpenes accounted for ~75% of the total OH reactivity in this region and are important volatile organic compounds (VOCs) for modeling atmospheric chemistry in Amazonia. (nasa.gov)
There is probably no single one chemical exposure responsible for these illnesses, but more likely a mixed exposure of chemical classes such as particulate matter and oxygenated organic species (oxidized volatile organic compounds that are likely biologically reactive and potentially cause cell damage and increase susceptibility to disease). (cdc.gov)
The possible answers to these questions might be found in investigating the chemistry of volatile organic compounds found in the indoor environment, developing new sampling methods, and improving assessments of chemical health effects. (cdc.gov)
Some of these are volatile organic compounds, meaning they evaporate into the air, and others are non-volatile, meaning they adhere to the surface. (cdc.gov)

The presence of fair weather clouds (cumulus humilis) had an important impact on the vertical distribution and chemistry of VOCs through the planetary boundary layer (PBL), the cloud layer, and the free troposphere (FT). Entrainment velocities between 10:00 and 11:30 local time (LT) are calculated to be on the order of 8-10 cm/s. (nasa.gov)

The types of chemicals most likely to be involved are consumer products that may include consumer-grade pesticides, organic chemicals (usually from paints or solvents), and inorganic chemicals resulting from consumer-grade cleaners and additives to the organic compounds. (cdc.gov)
A major research area in atmospheric chemistry focuses on the formation of secondary organic aerosol (SOA), which contains a large variety of low-volatility organic compounds when generated by the ozonolysis of monoterpenes. (aaqr.org)
The low-volatility organic compounds potentially arising from the ozonolysis of citral, including aldehydes (-C(=O)H), ketones (-C(=O)-), alcohols (-OH), and hydroperoxides (-OOH), can form SOA through the nucleation, condensation, and/or partitioning of the condensed and gaseous phases. (aaqr.org)
Common among these 10 interactions of organic compounds, their power to detect excess cancer agents is the electrophilic nature of or their metabolites, with DNA and R 1 risk at particular sites. (who.int)
NIOSH research has shown that when combined with ozone, one of the common components of pine oil cleaners, alpha-terpineol, transforms into many oxygenated organic compounds in both the gas-phase and on surface reactions creating new products potentially harmful to those exposed. (cdc.gov)

Chromatographic analysis of GE revealed the presence of four organosulfur compounds including diallyl disulfide, diallyl trisulfide, 2-vinyl-(4H)-1,3-dithiin and 3-vinyl-(4H)-1,2-dithiin where the latter was the predominant compound with a level of 22.9 mg/g which significantly contributed to the inhibitory effect of GE. (uaeu.ac.ae)
The principal phytochemicals that exhibit antibacterial activity are oil-soluble organosulfur compounds that include allicin, ajoenes, and allyl sulfides. (frontiersin.org)
The organosulfur compounds of garlic exhibit a range of antibacterial properties such as bactericidal, antibiofilm, antitoxin, and anti-quorum sensing activity against a wide range of bacteria including multi-drug resistant (MDR) strains. (frontiersin.org)
The reactive organosulfur compounds form disulfide bonds with free sulfhydryl groups of enzymes and compromise the integrity of the bacterial membrane. (frontiersin.org)
Multiple antibacterial effects of organosulfur compounds provide an excellent framework to develop them into novel antibiotics. (frontiersin.org)

A polyhydric alcohol unsaturated carboxylic acid ester is preferable as the compound shown by formula II and an unsaturated hydrocarbon compound such as 1,5-hexadiene, a vinyl group-containing siloxane compound and a silicon compound such as 1,2-bis(trivinylsilyl)ethane may be used. (sumobrain.com)

The high nickel content of the alloy enables it to retain considerable resistance under reducing conditions and makes it resistant to corrosion by a number of organic and inorganic compounds. (hpalloys.com)

The alternative to that was adhesives, which was the same kind of chemistry: based on a vinyl acetate monomer. (theceomagazine.com)
We went on to different chemistries from vinyl acetate monomer, moved on to different applications of adhesives like pressure-sensitive adhesives for labels and packaging tapes," Gosalia explains. (theceomagazine.com)
From just vinyl acetate monomer, Jesons has now moved on to multiple chemical compounds like acrylates, styrene and specialty monomers. (theceomagazine.com)
This causes pyrolysis (thermal cracking) of the 1,2-dichloroethane to produce the vinyl chloride monomer. (cdc.gov)
Vinyl chloride is also used as an intermediate in the production of other chlorinated compounds and as a component in mixed-monomer plastics. (cdc.gov)
Polyvinyl chloride (PVC) is a polymer formed by the polymerization of vinyl chloride monomer (VCM) in the presence of initiators such as peroxide and azo compounds. (creative-proteomics.com)
Typical corrosion applications include titanium dioxide production (chloride route), perchlorethylene syntheses, vinyl chloride monomer (VCM), and magnesium chloride. (hpalloys.com)

A convenient and simple way to synthesize polymerizable ribavirin derivatives is via transesterification between ribavirin and divinyl dicarboxylates in acetone at 50 ºC, catalyzed by lipase immobilized on acrylic resin from Candida antarctica (CAL-B). These ribavirin esters can be consequently homo-polymerized or copolymerized with other bioactivity compounds such as sugar vinyl esters to form prodrugs which are useful in pharmacy. (news-medical.net)
Plasticizers are colourless and odourless compounds, primarily phthalate esters, used to increase the flexibility of polymers, primarily polyvinyl chloride (PVC). (marketresearch.com)

The material of concern was identified as a bulk molding compound containing styrene and vinyl toluene-based plastic resin. (cdc.gov)
The vinyl resin needs to compound before it can be put through further processing. (ps-rank.com)
A cellulose fiber is a natural resource that is included in every plant, and thus, may be considered as inexhaustible, and has also been examined for an application in automobile components and structural materials by being compounded with a resin, since it is light in weight and high in strength. (justia.com)
For example, Patent Literature 1 proposes to obtain a fiber-reinforced resin using polyolefin modified with a carboxyl group or carboxyl derivative group containing unsaturated compound in addition to a polyolefin resin and a plant fiber. (justia.com)
Meanwhile, Patent Literature 2 proposes to use a cellulose fiber with its surface processed with a silane coupling agent when the cellulose fiber and a resin are compounded. (justia.com)

Characterization of an isolate that uses vinyl chloride as a growth substrate under aerobic conditions. (readabstracts.com)

A facile nickel-catalyzed oxidation of primary alcohols with tetrabutylammonium peroxydisulfate in the presence of ammonium hydrogen carbonate under basic aqueous conditions provides access to various aliphatic, aromatic and heterocyclic nitriles in excellent yields with very high purity. (organic-chemistry.org)
Even when PM1 emissions were reduced, high emissions of pollutants that have a strong impact on health and climate may be emitted, for example polycyclic aromatic compounds (PAHs) and refractory black carbon (rBC). (lu.se)

Simple coumarins and analogues are a large class of compounds that have attracted their interest for a long time due to their biological activities: they have shown to be useful as antitumoural, anti-HIV agents and as CNS-active compounds. (benthamscience.com)
Chemical analogues and compounds with biological or physical characteristics similar to those of suspected carcinogens may also be considered, even in the absence of data on a possible carcinogenic effect in humans or experimental animals. (who.int)

Children exposed to the same levels of vinyl chloride as adults may receive a larger dose because they have greater lung surface area:body weight ratios and increased minute volumes:weight ratios. (cdc.gov)
In addition, they may be exposed to higher levels than adults in the same location because of their short stature and the higher levels of vinyl chloride found nearer to the ground. (cdc.gov)
Annual production levels of vinyl chloride continue to increase, with 14.98 billion pounds produced in the United States in 1995. (cdc.gov)
This kind of damage is often the result of relatively high levels of vinyl chloride exposure, such as the kind an industrial worker might experience on a normal day on the job. (alipac.us)

Thirty percent of imported asbestos was used in roofing products and the remaining 3% was used in coatings and compounds, and plastics [Virta, 2013]. (cdc.gov)

Vinyl chloride is produced by chlorinating ethylene to produce 1,2-dichloroethane, which is then subjected to high pressures and temperatures. (cdc.gov)
oxychlorination: where ethylene reacts with chlorine in the presence of hydrogen. (ps-rank.com)
The most important application of this reaction is the addition of chlorine to ethylene to give 1,2-dichloroethane, from which vinyl chloride is prepared. (britannica.com)
One source of industrial ethanol, for example, is the reaction of ethylene with water in the presence of phosphoric acid . (britannica.com)

The presence of tributylins and tetrabutyltins in the environment results primarily from human activity. (canada.ca)
Workers at facilities where vinyl chloride is produced or used may be exposed to the primarily through inhalation . (alipac.us)

Boron hydrides, compounds of the type R 2 BH, add to alkenes to give organoboranes (hydroboration), which can be oxidized to alcohols with hydrogen peroxide (H 2 O 2 ) (oxidation). (britannica.com)
The ratio of methyl-vinyl-ketone (MVK) and methacrolein (MAC) (unique oxidation products of isoprene chemistry) with respect to isoprene showed a pronounced increase in the cloud layer due to entrainment and an increased oxidative capacity in broken cloud decks. (nasa.gov)
Consequently, the formation of carcinogenic degradation intermediate vinyl chloride was avoided due to the sequential reduction and oxidation processes. (hazmatmag.com)

For example, if there may be a nearby commercial facility that has certain chemical compounds in use for his or her strategies, tubes for the ones specific chemical substances would be a likely preference. (romanbusiness.com)
The presence of the dominant degradation products ethene and ethane in monitoring wells over the duration of the study indicates the extended life-time of ZVI's chemical activity in the composite particles. (hazmatmag.com)
Natural News ) Vinyl chloride a chemical being transported in some of the train cars that derailed and burned in East Palestine, Ohio early this month can harm the human liver . (alipac.us)
This means outdoor air exposure is likely not a problem, except with intense periods of exposure, such as immediately following a release of vinyl chloride like in the Ohio chemical spill. (alipac.us)
Unlike other microorganisms that lose their ability to degrade vinyl chloride when grown in its absence, this strain resumed degrading the chemical when grown without it for at least 24 days. (readabstracts.com)
related chemical compounds, physical agents (such as radiation) and biological factors (such as viruses). (who.int)

Exposure to higher concentrations of vinyl chloride for longer durations can cause death, presumably due to central nervous system (CNS) and respiratory depression. (cdc.gov)

Many multi-chlorinated pollutants can only be biologically degraded under highly reducing environmental conditions and the presence of specialized dechlorinating microorganisms . (sensatec.de)

with many additives, modifiers to produce a final compound. (ps-rank.com)
Several synthetic strategies have been pursued to obtain new compounds to study their properties on cementitious systems as new bio-based additives. (uni-weimar.de)

Over time, these chemicals can degrade vinyl records. (crazyhowto.com)

Juliane I. Beier, Assistant Professor of Medicine and Environmental Health, Member of Pittsburgh Liver Research Center, University of Pittsburgh , studies the impact of vinyl chloride exposure on the liver, especially on how it may affect those with underlying liver disease. (alipac.us)
The hallmark of vinyl chloride exposure to the liver is a contradictory combination of normal liver function tests and the presence of fat in the liver and the death of hepatic cells, which make up the bulk of the liver s mass. (alipac.us)

Most vinyl chloride is polymerized to form polyvinyl chloride (PVC), a material used to manufacture automotive parts and accessories, furniture, packaging materials, pipes, wall coverings, and wire coatings. (cdc.gov)

Some compounds commonly associated with landfills are hydrogen sulfide, carbon monoxide, hydrogen chloride, and vinyl chloride. (cdc.gov)
When burned or heated to a high enough temperature, vinyl chloride decomposes to hydrogen chloride, carbon monoxide, carbon dioxide, and traces of phosgene. (cdc.gov)

At all ambient temperatures, vinyl chloride is an extremely flammable and potentially explosive gas that is heavier than air. (cdc.gov)

Linear plasmids were analyzed to study the pathway for Vinyl Chloride (VC) biodegradation in strains AJ and TD and explain why this process happens at many sites but not in all sites where groundwater is contaminated with chloroethenes. (readabstracts.com)

The key cause for concern is the potential harm that can be caused by ammonia and alcohol, two compounds that can be found in some types of glass cleaners. (crazyhowto.com)

Coumarins, also known as benzopyrones, are present in remarkable amounts in plants, although their presence has also been detected in microorganisms and animal sources. (benthamscience.com)

Vinyl chloride is used to produce polyvinyl chloride (PVC), a hard plastic material used to make pipes. (alipac.us)

I want to get the latest chemistry news from C&EN in my inbox every week. (acs.org)

4-chlorophenyl dichlorophosphate is initially reacted with various alcohols and amines in the presence of triethylamine, and then further treated with ribavirin using Et3N as a base. (news-medical.net)
1. Introduction amines and vinyl chloride) ( Gochfeld, 2005a,b ). (cdc.gov)

The biotransformation is reductive and is characteristic of the reactions that occur in the presence of an easily degradable carbon source. (readabstracts.com)

Organotin substances are tin compounds having 1, 2, 3 or 4 organic groups attached and are designated as mono-, di-, tri- or tetra-organotin depending on the number of tin-carbon bonds in the molecule. (canada.ca)

A large percentage of my customers are wire and cable manufacturers, and I work on day-to-day interactions with customers on a range of topics from compound recommendations, long-term projects, regulatory questions, quality and processing discussions, etc.," she said. (plasticsnews.com)

Fiber cement boards offer a longer lifespan than other sliding materials, such as wool or vinyl. (straitsresearch.com)
Our vinyl compounds are used in jackets and insulation across many cable extrusion companies, many of whom are involved in the fiber-optic and 5G/cellphone cable space. (plasticsnews.com)

Reaction of vinylation of alifatical alcohols in the presence of high-base systems was investigated and it was determined that corresponding vinyl ethers were formed. (aknuk.uz)

The structural diversity found in this family of compounds led to the division into different categories, from simple coumarins to many other kinds of policyclic coumarins such as furocoumarins and pyranocoumarins. (benthamscience.com)

The contaminated water at Camp Lejeune was laced with several known carcinogens, including trichloroethylene (TCE), perchloroethylene (PCE), vinyl chloride, and benzene. (rosenfeldinjurylawyers.com)
or each of these agents, carcinogenicity in rats and/or mice, els, differences in exposure con- there was sufficient evidence of car- for example for the liver (aflatoxins, ditions between studies in animals cinogenicity from studies in rats and/ trichloroethylene [TCE], and vinyl and in humans, or limitations in Part 1 · Chapter 1. (who.int)

The reaction occurs at a convenient rate only in the presence of certain finely divided metal catalysts , such as nickel (Ni), platinum (Pt), palladium (Pd), or rhodium (Rh). (britannica.com)

Those who have spent decades working in the vinyl industry have said that window cleaners are the only method they use to clean their records. (crazyhowto.com)
Concerning whether or not it is safe to use Windex or other types of glass cleaners for this reason, there has always been a contentious discussion among people who collect vinyl records. (crazyhowto.com)
Using glass cleaners on vinyl records, such as Windex, poses a significant risk due to the presence of chemicals in these cleaners. (crazyhowto.com)

If specific contaminants are known or suspected with some degree of confidence to have been placed in the landfill, compound-specific colormetric tubes may also be used to obtain a qualitative amount in the landfill. (cdc.gov)

Furthermore, the hydroxylated products can readily be converted into vicinal tricarbonyl compounds, which are useful synthetic precursors. (organic-chemistry.org)

In the past, when record-specific cleaning chemicals were readily available, music fans frequently resorted to using materials that were found around the house in order to maintain their vinyl collection. (crazyhowto.com)

This same compound, however, forms naturally in certain foods, both home-cooked and packaged, especially when prepared at high temperatures. (bvsalud.org)

What are the three processes involved in the creation of vinyl? (ps-rank.com)

Subsequent head space analysis of heated raw process materials revealed the presence of formaldehyde. (cdc.gov)
The results of state-of-the-art compound specific isotope analysis in combination with pyrosequencing suggested the oxidative degradation of cis-DCE by microorganism related to Polaromonas sp. (hazmatmag.com)
Ligand-based screening techniques essentially focus on comparative molecular similarity analysis of compounds with known and unknown activity, regardless of the methods or algorithms used. (benthamscience.com)

In presence of airborne particles the emission of DEHP from PVC flooring increased. (lu.se)

n is ≥3 integer and m is ≥2 integer) and alkenyl groups of a compound containing two or more alkenyl groups shown by formula II (R4, R5 and R6 are H or 1-6C monofunctional hydrocarbon) are subjected to addition reaction in the presence of a radical initiator. (sumobrain.com)
A Mizoroki-Heck type reaction of boronic acids proceeds under a Pd(II)-mediated pathway using a catalytic amount of Pd(OAc) 2 in the presence of Cu(OAc) 2 as an oxidant. (organic-chemistry.org)

vinyl chloride is treated as a human carcinogen. (cdc.gov)
The Rubbertown case also resulted in the worldwide recognition of vinyl chloride as a confirmed carcinogen. (alipac.us)

The review provides a focused and comprehensive portrait of the status of garlic and its compounds as antibacterial agents. (frontiersin.org)

Vinyl chloride should be stored in a cool, dry, well ventilated location, separate from oxidizing materials and accelerants. (cdc.gov)

Inhalation is the primary route of exposure, and vinyl chloride is readily absorbed from the lungs. (cdc.gov)
Direct ocular exposure to vinyl chloride vapor can cause localized burns or irritation of the conjunctiva and cornea. (cdc.gov)
Studies suggest that exposure to vinyl chloride, even at levels below the federal limits for safety, can worsen liver disease caused by a typical Western diet that is full of fat and sugar. (alipac.us)
Our aim was to investigate the presence of acrylamide in amniotic fluid and, via the MRM-MS technique, to determine whether there is any correlation between maternal exposure to acrylamide, through a woman's diet, and fetal growth. (bvsalud.org)

However, due to presence of silanol groups (Si-OH) on the surface of silica nanoparticles (SNPs), they have tendency to aggregate in the rubber matrix11,14,15. (all-heatexchangers.nl)

The chlorine andethylene are then used to manufacture vinyl in the ration of 57% and 43% respectively. (ps-rank.com)

Relevant of mutagenicity and clastogenici- angiosarcomas of the liver, which carcinogens discussed in this chap- ty, including the induction of sister are rare tumours, were identified in ter do not include pharmaceutical chromatid exchange (SCE), chro- humans, rats, and mice exposed to drugs classified in Group 1, which mosomal aberrations (CA), and mi- vinyl chloride. (who.int)

In tire industry, nano silica is highly used as reinforcing fillers in the rubber compounds to increase their mechanical properties (i.e. tensile strength, modulus, abrasion resistance) and reduce their rolling resistance9,10,11,12,13. (all-heatexchangers.nl)

Cleaning a vinyl record can be done in a variety of different ways. (crazyhowto.com)
Alkenes react with a much richer variety of compounds than alkanes. (britannica.com)

Diseases1

Chemicals and Drugs6

Phenomena and Processes1

Technology, Industry, Agriculture3

Volatile10

VOCs1

Organic compounds5

Organosulfur compounds5

Unsaturated hydrocarbon1

Inorganic compounds1

Monomer7

Esters2

Resin5

Characterization1

Aromatic2

Analogues2

Levels of vinyl chloride4

Plastics1

Ethylene4

Primarily2

Oxidation3

Chemical6

Concentrations1

Biologically1

Additives2

Degrade vinyl1

Chloride exposure2

Coatings1

Carbon monoxide2

Potentially1

Strains1

Concern1

Microorganisms1

Polyvinyl chloride1

Chemistry1

Amines2

Characteristic1

Substances1

Interactions1

Fiber2

Alcohols1

Structural1

Trichloroethylene2

Nickel1

Cleaners3

Tubes1

Synthetic1

Chemicals1

Naturally1

Processes1

Analysis3

Emission1

Reaction2

Carcinogen2

Agents1

Materials1

Exposure4

Groups1

Manufacture1

Include1

Properties1

Variety2