May cause cancer based on animal data. CDC - NIOSH Pocket Guide to Chemical Hazards - Methylene chloride Solvent-based strippers utilize potent methylene chloride (MC) to work in as little as 15 to 30 minutes. Product summary. Emergency Overview Possible cancer hazard. Product # METHYLENE CHLORIDE SOLVENT _____ Revision Date: November, 2019 _____ Page 7 / 10 Component Information Chemical Name Algae/aquatic plants Fish Toxicity to microorganisms Crustacea Dichloromethane 75-09-2 500: 96 h Pseudokirchneriella subcapitata mg/L EC50 500: 72 h Pseudokirchneriella subcapitata mg/L EC50 140.8 - 277.8: 96 h It is used in the production of photographic films, synthetic fibers, pharmaceuticals, adhesives, inks, and printed circuit boards. Methylene chloride is used mainly as a solvent in paint removers, aerosol mixtures, chemical reaction processes and as a blowing agent for flexible foams. [Solvent] Methylene Chloride. [Note: A gas above 104°F.] Methylene chloride is manufactured using AGCs ...

Earlier this week, Slate reported that the EPA is considering a new rule for 2016 that could impact the use of methylene chloride (also known as dichloromethane), a chemical commonly found in paint strippers. The rule could result in anything from new warning label requirements to an outright ban.. According to OSHA, workers using methylene chloride are at increased risk of developing cancer, adverse effects on the heart, central nervous system and liver, and skin or eye irritation. While the Slate piece emphasized the risk of sudden, fatal heart attacks, methylene chloride can also pose serious health dangers when absorbed through the skin. (Methylene chloride will eat through latex gloves, so workers need rubber or PVA gloves to stay protected.) In recent years, OSHA has issued hazard alerts for methylene chloride, with a special focus on the dangers it poses for workers engaged in bathtub refinishing. According to OSHA, at least 14 American workers died refinishing bathtubs due to methylene ...

Business Directory for Methylene Chloride Suppliers in Mumbai - Get contact details of Methylene Chloride Manufacturers, Wholesale Methylene Chloride Exporters, Best Methylene Chloride Traders & Distributors Across the Mumbai.

A common synonym for methylene chloride is dichloromethane (1 4) Methylene chloride is a colorless liquid with a sweetish odor (1 6) The chemical formula for methylene chloride is CH 2 Cl 2 and the molecular weight is 84 93 g/mol (1) The vapor pressure for methylene chloride is 349 mm Hg at 20 C and it has an octanol/water coefficient Request A Quotation! ...

Exposure to methylene chloride occurs mostly from breathing contaminated air, but may also occur through skin contact or by drinking contaminated water. Breathing in large amounts of methylene chloride can damage the central nervous system. Contact of eyes or skin with methylene chloride can result in burns. Methylene chloride has been found in at least 882 of 1,569 National Priorities List sites identified by the Environmental Protection Agency (EPA).

Methylene Chloride (MC). Familiarization with MC. MC is used as a solvent, especially where quick evaporation is needed Methylene chloride dissolves oils, fats, waxes, resins, rubber. 1a. Familiarization with MC. Methylene chloride is used: in paint strippers as an ingredient in adhesives...

Chemical paint strippers that include methylene chloride and phenol have been extensively used to remove coatings from metallic substrates. These strippers are inexpensive and remove polymeric organic coatings quickly and easily from a variety of metallic substrates without damage to the substrate. Their mechanism of action has not been adequately characterized. Herein we report changes in physical and molecular-level properties of five coatings upon exposure to components of the paint stripper including methylene chloride and phenol. The coatings studied were polyurethane topcoats and epoxy primers currently in military use, both clear films and fully pigmented films. The development and use of simplified formulations (clear films) of each coating was done. The coatings were characterized using DSC, TGA, solid state 1H- and 2H-NMR spectroscopy, Raman spectroscopy, X-ray photoelectron spectroscopy and attenuated total reflectance FTIR. Our results show very different behavior for methylene chloride and

EWGs Tap Water Database Dichloromethane (methylene chloride) results for The Villages Resort | Dichloromethane (methylene chloride). Find out what is in your tap water

EWGs Tap Water Database Dichloromethane (methylene chloride) results for Byesville | Dichloromethane (methylene chloride). Find out what is in your tap water

OSHA and the National Institute for Occupational Safety and Health (NIOSH) are warning workers and employers about the dangers of using methylene chloride-based stripping products in bathtub refinishing. Methylene chloride, a chemical used in industrial processes, but also available in over-the-counter paint and finish stripping products, has been implicated in at least 14 deaths since 2000 of workers refinishing bathtubs. These workers were generally working alone, in poorly ventilated bathrooms, with inadequate or no respiratory protection, and no training about the hazards of methylene chloride. . . .

Washington, DC-This morning, the U.S. Environmental Protection Agency released its final risk evaluation for methylene chloride-finding unreasonable risk of injury from 47 of 53 uses examined, including the use of methylene chloride in paint and coating removers.. In response, Liz Hitchcock, director of Safer Chemicals Healthy Families issued the following statement:. The findings in EPAs evaluation are not surprising. Years of study and tragedy have shown the dangerous effects of methylene chloride. Even limited exposure to this chemical has resulted in dozens of deaths. The story of each life lost to this dangerous chemical is heartbreaking. And the longer EPA drags its feet, the more lives will be lost. EPA recognized the unacceptable danger of paint strippers containing this deadly chemical in January 2017 when it proposed banning these products for consumer and commercial use. However, last year, EPA finalized the ban on these products only for consumer use and refused to restrict ...

Chemical paint strippers that include methylene chloride and phenol have been extensively used to remove polymeric coatings from a variety of substrates. Previous work helped to determine some aspects of the mechanism for methylene chloride-based paint strippers, but many questions remained. Clear films, partial formulation films, with pigments and no fillers, and full formulation films of current military polyurethane coatings were analyzed in this study. The coatings were characterized using DSC, TGA, Raman spectroscopy, X-ray photoelectron spectroscopy, attenuated total reflectance FTIR, confocal laser microscopy, and NEXFAS spectroscopy. Results showed that the different components of the paint stripper had synergistic mechanistic effect. The methylene chloride acts by penetrating the coating and enabling other solvents to subsequently penetrate the coating. The main component responsible for coating degradation is phenol. Water acting as a protic polar solvent activates the phenol and increases

While several organic compounds were detected in the vapor samples used in the reenactment of the preparation of mounts from the extracts of nuclear grade high-efficiency particulate air filter fiberglass samples, the most significant species present in the samples were methylene chloride, phenol, phenol-d6, and 2-fluorophenol. These species were all known to be present in the extracts, but were expected to have evaporated during the preparation of the mounts, as the mounts appeared to be dry before any vapor was collected. These species were present at the following percentages of their respective occupational exposure limits: methylene chloride, 2%; phenol, 0.4%; and phenol-d6, 0.6%. However, there is no established limit for 2-fluorophenol. Several other compounds were detected at low levels for which, as in the case of 2-fluorophenol, there are no established permissible exposure limits. These compounds include 2-chlorophenol; N-nitroso-1-propanamine; 2-fluoro-1,1{prime}-biphenyl; 1,2

Many liquid paint strippers and solvents contain a toxic chemical called methylene chloride. Exposure can lead to death or serious illness. Workers are at risk when they inhale methylene chloride vapors and when it comes in contact with their skin ...

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Methylene Chloride Market research report is the new statistical data source added by A2Z Market Research. Methylene Chloride Market is growing at…. ...

Understand ICIS coverage of the Methylene chloride US market. Use the ICIS price assessments and market coverage to track the Methylene chloride US market.

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Dichloromethane. undefined. Synonyms: Methylene chloride. CAS 75-09-2. Molecular Weight 84.93. Browse Dichloromethane and related products at MilliporeSigma.

Methylene Chloride: A chlorinated hydrocarbon that has been used as an inhalation anesthetic and acts as a narcotic in high concentrations. Its primary use is as a solvent in manufacturing and food technology.

Behavioral effects due to carbon monoxide (630080) (CO) or methylene chloride (75092) (MeC) inhalation were investigated. Six male and six nonpregnant female humans were exposed to CO or MeC concentrations designed to produce maximum 5 percent carboxyhemoglobin (COHb) concentrations during the fourth hour of exposure, and were assigned an eye and hand coordination task that was performed concurren

div class=citation vocab=http://schema.org/,,i class=fa fa-external-link-square fa-fw,,/i, Data from ,span resource=http://link.library.in.gov/portal/Occupational-exposure-to-methylene/-J7jw22nOEE/ typeof=Book http://bibfra.me/vocab/lite/Item,,span property=name http://bibfra.me/vocab/lite/label,,a href=http://link.library.in.gov/portal/Occupational-exposure-to-methylene/-J7jw22nOEE/,Occupational exposure to methylene chloride,/a,,/span, - ,span property=potentialAction typeOf=OrganizeAction,,span property=agent typeof=LibrarySystem http://library.link/vocab/LibrarySystem resource=http://link.library.in.gov/,,span property=name http://bibfra.me/vocab/lite/label,,a property=url href=http://link.library.in.gov/,Indiana State Library,/a,,/span,,/span,,/span,,/span,,/div ...

Today, the U.S. Environmental Protection Agency unveiled a rule that leaves workers across the United States exposed to methylene chloride, a lethal chemical used in paint strippers that has already caused dozens of worker deaths.

Find Methylene Chloride 99.9% from China Manufacturer, Manufactory, Factory and Supplier - Shenyang Ote Chemicals Co., Ltd. on ECVV.com

The motion requests that the standards current final engineering control startup date of April 10, 2000, which now applies to employers with fewer than 20 employees, be applied also to employers in the specified application groups with 20-49 employees and to foam fabricators with 20-149 employees. (In referring to an employers number of employees, the parties to the motion explain that they intend for the number of employees to refer to the total number or workers employed by the particular employer, not the number who work at a particular facility or the number that use methylene chloride in their work.) The motion requests shorter extensions of the engineering control dates for larger employers in these application groups. The parties further request that respirator use to achieve the 8-hour TWA PEL not be required before the engineering control startup dates for the employers covered by the motion.. In evaluating the motion, OSHA notes that the parties are not seeking to modify the ...

The California Department of Toxic Substances Control (DTSC) is seeking public comment on its proposal to list Paint and Varnish Strippers Containing Methylene Chloride as a Priority Product. The comment period opened on November 17, 2017. It will close January 18, 2018. The proposed regulation is available on the agencys website. If the regulation is adopted, manufacturers will be required to conduct an Alternatives Analysis to identify and evaluate safer options.. DTSC proposes to list Paint or Varnish Strippers Containing Methylene Chloride as a Priority Product in regulation because workers and consumers could be exposed to methylene chloride during normal use of paint or varnish strippers. Inhalation and dermal exposure to methylene chloride is associated with adverse health effects, including cancer of the brain, liver, and biliary tract, and central nervous system depression, intoxication and unconsciousness. Numerous deaths have been reported in workers and consumers who were exposed to ...

This fatty acid mixture contains long chain saturated fatty acid methyl esters in methylene chloride for the qualitative identification and quantitation of unknowns. Microbial fatty acid profiles are unique from one species to another and can therefore be

Methylene chloride (CH2Cl2) is a colorless liquid that can harm the eyes, skin, liver, and heart. Exposure can cause drowsiness, dizziness, numbness and tingling limbs, and nausea. It may cause cancer

Extent-of-exposure survey of methylene chloride. Cincinnati, Ohio: U.S. Dept. of Health and Human Services, Public Health Service, Center for Disease Control, National Institute for Occupational Safety and Health, Division of Surveillance, Hazard Evaluations, and Field Studies ; Washington, D.C.

In a previous video, I showed how to extract caffeinated water from green coffee beans with supercritical CO2. Here, I show how to extract dry caffeine crystals from the caffeinated water (ie coffee, in this case). I used a vacuum filtration setup to create very strong coffee, then mixed it with methylene chloride in a seperatory funnel. The methylene chloride sinks below the water, taking most of the caffeine with it. By opening the funnel carefully, only the methylene chloride and caffeine can be transferred to a flask where the methylene chloride is boiled away. I then mounted a test tube in a rubber stopped and filled the tube with ice. With the stopped in the flask, I evacuated the flask and applied heat. The caffeine will sublimate and collect on the cold test tube. I scraped off the caffeine and measured the mass ...

In a previous video, I showed how to extract caffeinated water from green coffee beans with supercritical CO2. Here, I show how to extract dry caffeine crystals from the caffeinated water (ie coffee, in this case). I used a vacuum filtration setup to create very strong coffee, then mixed it with methylene chloride in a seperatory funnel. The methylene chloride sinks below the water, taking most of the caffeine with it. By opening the funnel carefully, only the methylene chloride and caffeine can be transferred to a flask where the methylene chloride is boiled away. I then mounted a test tube in a rubber stopped and filled the tube with ice. With the stopped in the flask, I evacuated the flask and applied heat. The caffeine will sublimate and collect on the cold test tube. I scraped off the caffeine and measured the mass ...

Looking for a pump that can handle methylene chloride? Youre in luck. T-Mag magnetic drive pumps are the best solution on the market.

Public health advocates have filed suit against US EPA over a stalled rulemaking to ban the use of methylene chloride (MCL), a common ingredient in paints and paint strippers.

Indian Customs ADD Notification 58/2015-Cus (ADD),Seeks to levy provisional anti dumping duty on Methylene Chloride originating in or exported from the People?s Republic of China and Russia for a period not exceeding six months ,Indian Customs ADD Notification No. 58/2015-Cus (ADD)

SBAR Panel: Regulation of N-Methylpyrrolidone and Methylene Chloride in Paint and Coating Removal under Section 6(a) of the Toxic Substances Control ...

METHYLENE CHLORIDE - PakTradeInfo.com, over 6,000,000 trade data importers and exporters. Business To Business (b2b) Trade Directory and Catalog. Trade leads. International Trade

by ELLEN KNICKMEYER Associated PressSaturday, March 16th 2019. WASHINGTON (AP) - The Environmental Protection Agency on Friday banned consumer use of a popular but deadly paint stripper but stopped short of also banning commercial use of the product by tradespeople.. EPA Administrator Andrew Wheeler signed the rule, which will bar manufacture and import of the stripper methylene chloride for consumer use, in a private meeting Friday with relatives of a man who died while using the paint stripper.. The EPA cited the acute fatalities that have resulted from exposure to the chemical and an unreasonable risk to consumers. Retail stores have until later this year to remove the product from sale. Many big chains already stopped sale of products with methylene chloride in recent months, amid a campaign led by environmental groups and families of men overcome and killed by fumes from the paint stripper.. Goopy, strong-smelling products containing methylene chloride have been a go-to product for ...

VCPL, India offers Dichloromethane HPLC CAS # 75-09-2. We are best Dichloromethane HPLC manufacturer, Methylene chloride, Methylene Dichloride, MDC, Dichloromethane

A characteristic feature of the class Theta glutathione S-transferase (GST) T1-1 is its ability to activate dichloromethane and dibromoethane by catalysing the formation of mutagenic conjugates. The level of the GSTT1 subunit within tissues is an important determinant of susceptibility to the carcinogenic effects of these dihaloalkanes. In the present study it is demonstrated that hepatic GST activity towards these compounds can be elevated significantly in female and male Fischer-344 rats by feeding these animals on diets supplemented with cancer chemopreventive agents. Immunoblotting experiments showed that increased activity towards the dihaloalkanes is associated with elevated levels of the GSTT1 subunit in rat liver. Sex-specific effects were observed in the induction of GSTT1 protein. Amongst the chemopreventive agents tested, indole-3-carbinol proved to be the most potent inducer of hepatic GSTT1 in male rats (6.2-fold), whereas coumarin was the most potent inducer of this subunit in the ...

Quick DetailsCAS No.:75-09-2Other Names: DichloromethaneMF:   CH2Cl2, CH2Cl2EINECS No.:200-838-9Place of Origin:Shandong,China (Mainland)Type:Pharmaceutical  Intermediates Purity:   99.9%MW:84.93Model Number:   001Application:   pharmaceutical intermediates, polyurethAppearance:   colorless liquidname:   Methylene ChlorideBoiling Point:39.75°C (103.5°...

TY - JOUR. T1 - Feasibility of thermal separation in recycling of the distillable ionic liquid [DBNH][OAc] in cellulose fiber production. AU - Ahmad, Waqar. AU - Ostonen, Alexandr. AU - Jakobsson, Kaj. AU - Uusi-Kyyny, Petri. AU - Alopaeus, Ville. AU - Hyväkkö, Uula. AU - King, Alistair W T. PY - 2016/10/1. Y1 - 2016/10/1. N2 - The objective of this work was to explore the feasibility of 1,5-diazabicyclo[4.3.0]non-5-enium acetate ([DBNH][OAc]) recovery from water solution by thermal separation. The evaporation behavior of pure [DBNH][OAc] was first studied using low pressure distillation in the pressure range of 0.5-2 kPa. The dew points of the distillation products from [DBNH][OAc] were measured in the pressure range of 0.5-15 kPa and modeled using an Antoine equation. Measurements for vapor liquid equilibrium (VLE) of water + [DBNH][OAc] system were carried out using a static total pressure method. The temperature range for the VLE measurement was 303-353 K. The results showed negative ...

Systems and Methods for Forming an Isolated Transformer - A transformer to isolate a primary winding from a signal winding include a primary substrate (which may comprise a printed circuit board (PCB)) and a secondary substrate. The primary and secondary substrates may each have three openings to allow first and second E-E core halves to be joined therebetween. A first insulator may be disposed between the primary and secondary substrates to isolate the primary substrate from the secondary substrate. A second insulator may secure the primary and secondary substrates in place and insulate the secondary substrate from the core. The primary and secondary substrates may each include a Faraday shield its outer layers. A shield slit to prevent shorting between the legs of the E-E core may be formed by cutting a channel in the shield between the opening of the primary and secondary substrates. A retaining clip may be used to clamp together the primary substrate, first and second core E-E core halves, ...

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 ...

నెల్లూరు: మనుబోలు మండలం బద్వేలు క్రాస్‌రోడ్డు దగ్గర కారు బోల్తా, ముగ్గురికి గాయాలు,కర్నూలు: 16 వ రోజు జగన్ ప్రజా సంకల్ప యాత్ర,రంగారెడ్డి: మైలార్‌దేవ్‌పల్లిలో కింగ్స్‌ కాలనీలో ముస్తఫా అనే వ్యక్తిపై దుండగుల కాల్పులు,కడప: జగన్ సీఎం అయితే తన ఆస్తులు పెరుగుతాయి..చంద్రబాబు సీఎంగా ఉంటే ప్రజల ఆస్తులు పెరుగుతాయి: మంత్రి సోమిరెడ్డి,సిరిసిల్ల: అన్ని గ్రామాల్లో కేసీఆర్ గ్రామీణ ప్రగతి ...

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A method for producing an antimicrobial cellulose fiber. The method includes reacting a reactive compound with an antimicrobial agent to prepare a reactive antimicrobial compound, chemically fixing the reactive antimicrobial compound to a cellulose fiber through chemical bonding between the reactive compound and the cellulose fiber, and stabilizing the cellulose fiber structure. Further disclosed is an antimicrobial cellulose fiber produced by the method. The antimicrobial cellulose fiber is a human friendly material that has excellent antimicrobial activity and deodorizing performance. The antimicrobial cellulose fiber can be manufactured in the form of raw cotton, sliver, roving yarn, spun yarn, woven fabric, knitted fabric, non-woven fabric, etc. The antimicrobial cellulose fiber may be blended with other fibers, such as natural fibers and synthetic fibers.

Because of the increasing of obesity and related diseases, obesity is recognized as a major public health problem in industrialized as well as in developing countries, and the factors that regulate white adipose tissue are of great interest. An excess of body fat predisposes to the development of insulin resistance and metabolic syndrome, especially when concentrated within the abdomen. Classified as a disease, obesity diminishes both quality of life and life expectancy. The metabolic deregulation ultimately may lead to complications such as diabetes mellitus, coronary heart disease, hypertension, and some types of cancer1. The number of drugs approved for the treatment of obesity is very limited compared to other multifactorial diseases such as hypertension. This situation urged scientists to elucidate the mechanisms of adipose tissue development and to find natural substances able to antagonize excessive fat deposition. Medicinal products obtained from a variety of plants are. currently being ...

The global cellulose fibers market is expected to reach USD 48.37 billion by 2025, according to a new report by Grand View Research, Inc. The increasing gap between the demand and production of natural cellulose fibers across various end-use industries is the major factor for the growth of the market. In addition, the rise in textile & apparel industries in developing and emerging economies is also anticipated to fuel the global market growth.. Increasing demand for eco-friendly and biodegradable fibers, especially in textile and hygiene industry is driving the cellulose fibers market. The production of synthetic or man-made fibers includes the industrial processing of wood pulp derived from botanical sources. However, the manufacturing of cellulose fibers entails mechanical and chemical processing of wood pulp. Viscose, triacetate, and acetate are the most common variants of rayon, which are man-made cellulose fibers used extensively across end-use industries.. The cellulose fibers market is ...

Figure Picture of Cellulose Fiber Gasket Figure Global Production Market Share of Cellulose Fiber Gasket by Types in 2015 Figure Global Consumption Volume Market Share of Cellulose Fiber Gasket by Applications in 2015 Figure Industry Chain Structure of Cellulose Fiber Gasket Figure Global Major Regions Cellulose Fiber Gasket Development Status in 2016 Figure 2010 to 2020F world GDP Figure Growth of world gross product and gross domestic product by country grouping, 2007-2017 Figure Growth of World Output 2013-2017 Figure Contribution to global growth, 2007-2017 Figure Regional contributions to world import growth Figure Price indices of selected groups of commodities, August 2013-September 2015 Figure Exchange rates of selected emerging-market currencies vis-a-vis the United States dollar, 1 September 2014-23 November 2015 Figure Real effective exchange-rate volatility, January 1996-September 2015 Figure Growth of labor productivity, before and after the crisis Figure Global Cellulose Fiber ...

[50 Pages Report] Check for Discount on Global Cellulose Fibers Market Study 2016-2026, by Segment (Natural Cellulose Fibers, Man-Made Cellulose Fibers) , by Market (Apparel, Home Textile,) , by Company (Aditya Birla Group, Lenzing,) report by 99Strategy. Summary Cellulose fibers are fibers obtained from the bark, wood...

Semantic Scholar extracted view of Cancer mortality among man-made vitreous fiber production workers. by Chris Rossiter et al.

Looking for online definition of tetrachloromethane in the Medical Dictionary? tetrachloromethane explanation free. What is tetrachloromethane? Meaning of tetrachloromethane medical term. What does tetrachloromethane mean?

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Growth prospects of the overall Cellulose Fibers industry have been presented in the report. However, to give an in-depth view to the readers, detailed geographical segmentation within the globe Cellulose Fibers market has been covered in this study. The key geographical regions along with their revenue forecasts are included in the report.. The competitive framework of the Cellulose Fibers market in terms of the Global Cellulose Fibers industry has been evaluated in the report. The top companies and their overall share and share with respect to the Global market have been included in the report. Furthermore, the factors on which the companies compete in the market have been evaluated in the report.. Ask for Sample Report: http://www.fiormarkets.com/report-detail/17151/request-sample. This report also presents product specification, manufacturing process, and product cost structure etc. Production is separated by regions, technology and applications. Analysis also covers upstream raw materials, ...

Acetone can dissolve plastic, for example. Some examples of solvents include mineral spirits, turpentine, naphtha, acetone, alcohol, lacquer thinner, and methylene chloride. Hi … These common solvents are ideal for a large variety of uses. Boats, Propeller Parts & When understood this way, its obvious that odorless mineral spirits is a weaker solvent than regular mineral spirits. Evaporated organic solvents - limonene, toluene, acetone, etc. 3), four hours per day, 45 or 58 days failed to result in any hematological changes in guinea pigs, though slight changes in the liver and moderate scattered Also known as the spirit of turpentine, oil of … It can also be absorbed through healthy skin. Their primary use in wood finishing is for thinning waxes, oils, and varnishes, including polyurethane varnish, and for cleaning brushes. Acetone is very good at dissolving grease, but it dries very quickly and always should be handled with acetone-impenetrable gloves. Reply. Mineral spirit is the more ...

Press Release issued Jan 7, 2016: Chloromethane, also known as methyl chloride, HCC-40 or R-40 belongs to a group of organic compounds called haloalkanes. It is an extremely flammable colorless gas which is usually detected at toxic levels. Chloromethane is synthesized by boiling a mixture of sodium chloride, sulfuric acid and methanol. Significant amount of chloromethane is produced naturally in the oceans by the action of sunlight on chlorine and biomass in sea foam. It is majorly used in manufacturing silicone polymers, butyl rubber and in petroleum refining. Chloromethane was initially used as a refrigerant, but was discontinued on account of its flammability and toxicity. Due to its substantial toxic effects, it is no longer used in consumer products. Different types of chloromethanes such as methyl chloride, methylene chloride, chloroform, and carbon tetrachloride are produced in the industry. Methyl chloride is the largest segment and is also the most important type of chloromethane, largely used

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Technical grade kelevan contains 94 - 98% pure kelevan, 0.1 - 2% chlordecone, and 0.5 - 4.0% inorganic salts (Maier-Bode, 1976). 2.2. Physical and Chemical Properties The technical material is a brownish substance. Some physical and chemical properties of kelevan are given in Table 1. 2.3. Analytical Methods Kelevan can be extracted from plant or animal tissues, or soils using methylene chloride, isopropanol, or acetone. It can be oxidized by refluxing with chromium trioxide in glacial acetic acid to yield chlordecone. The chlordecone is then determined by gas- liquid chromatography (GLC) techniques (Westlake et al., 1970). An analytical method using liquid chromatography/mass spectrometry has been described by Cairns et al. (1982). Table 1. Some physical and chemical properties of kelevan --------------------------------------------------------------------------- Physical state solid, powder Colour white Relative molecular mass 634.79 Melting point 91 C Vapour pressure (20 C) , 0.0014 Pa (= , ...

(PVC) [(C2H3Cl)n] -200 mesh white powderPVC is used as a chlorine (57%) donor (colored flame enhancer), fuel and as a binder in some rocket propellants. Solvent is methylene chloride.Since different chlorine donors have different percentages of chlorine in them, and have different fuel values, they may not be interchan

Ethyl 4-Phenyl-3-ketobutyrate (2; Fig. 1) was synthesized by a method adapted from Capozzi et al. (1993). The commercial isopropylidene malonate (2,2-dimethyl-4,6-diketo-1,3-dioxane, also called Meldrums acid; Aldrich Chemical Co., Milwaukee, WI) was reacted with phenylacetyl chloride in the presence of dry pyridine in anhydrous methylene chloride. The crude phenylacetylated Meldrums acid (compound 1, Fig. 1) was refluxed in absolute ethanol until evolution of CO2 ceased (about 3 h). After evaporation of the solvent, ethyl 4-phenyl-3-ketobutyrate was purified on a silica gel column.. 4-Phenyl-3-ketobutyric acid (PKB). A 10% molar excess of 1 N NaOH solution was added slowly to ice-cooled ethyl 4-phenyl-3-ketobutyrate and stirred at room temperature until the organic phase disappeared (approximately 12 h). The solution was acidified with 1 N HCl to pH 2 and extracted three times with 3 volumes of ethyl ether. After drying over Na2SO4, the solvent was evaporated to give the white solid product ...

SFE uses supercritical CO2, instead of organic solvents such as hexane and methylene chloride, to extract chemical compounds from a solid matrix (sometimes also from liquids). Near the critical point the density of a SCF is extremely sensitive to minor changes in temperature and pressure. Since the solvating power of a SCF is directly related to its density, selective extraction of the analyte of interest can be achieved by making slight changes in temperature and pressure and exploiting the differential solubility of analytes in the SCF. On the other hand, due to the higher diffusion coefficients in supercritical fluids, SFE is faster than liquid extraction. SFE is also a more efficient extraction method since the lower surface tension of supercritical fluids allows penetration into small pores of the solid matrix which are not accessible to liquids. ...

Abstract- The small amounts of chlorophyll precursors in dark-grown cells of Euglena gracilis Klebs var. bacillaris Pringsheim and the presence of contaminants which interfere with their purification have made their isolation and characterization difficult. We now extract cells with acetone: 0.1 M NH4OH (9:1 v/v). Protochlorophyll is obtained by extracting this solution with petroleum ether (30-50° b.p.) and extracting this petroleum ether fraction with 80% acetone to remove substances which interfere with subsequent chromatography. Protochlorophyllide remaining in the original acetone: NH4OH fraction is extractable into diethyl ether after adjusting the pH to approximately 5.5. Both pigments are verified and further purified by chromatography on Whatmann 3 MM paper using benzene:petroleum ether:acetone (30:10:1) or cellulose MN 300 thin layers with methanol:methylene chloride:water (100:18:20). These pigments resemble their well-described barley counterparts in solubility properties, spectral ...

Alzheimers disease (AD) is a neurodegenerative disorder characterized by neuronal loss and extracellular senile plaques containing |TEX|$\beta$|/TEX|-amyloid peptide (A|TEX|$\beta$|/TEX|). The deposition of the A|TEX|$\beta$|/TEX| peptide following proteolytic processing of amyloid precursor protein (APP) by |TEX|$\beta$|/TEX|-secretase (BACE1) and |TEX|$\gamma$|/TEX|-secretase is a critical feature in the progression of AD. Among the plant extracts tested, the ethanol extract of Petasites japonicus leaves showed novel protective effect on B103 neuroblastoma cells against neurotoxicity induced by A|TEX|$\beta$|/TEX|, as well as a strong suppressive effect on BACE1 activity. Ethanol extracts of P. japonicus leaves were sequentially extracted with methylene chloride, ethyl acetate and butanol and evaluated for potential to inhibit BACE1, as well as to suppress A|TEX|$\beta$|/TEX|-induced neurotoxicity. Exposure to A|TEX|$\beta$|/TEX| significantly reduced cell viability and increased apoptotic cell

We report that men who do not have homozygous deletions at GSTT1 (i.e., whose GST-θ protein is presumably expressed and functional) are at increased CaP risk. Although our results are largely hypothesis generating, these findings are consistent with knowledge that GST-θ produces genotoxic metabolites in response to specific exposures (1, 2, 3) . There is substantial evidence that glutathione S conjugates derived from halogenated alkanes, halogenated alkenes, hydroquinones, quinones, aminophenols, and other compounds can cause cellular and DNA damage (reviewed in Ref. 10 ). Many of these compounds are commonly found as occupational exposures, and some are known carcinogens. Glutathione metabolic intermediates from ethylene dibromide, 1,2,3,4-diepoxybutane, methyl bromide, epibromohydrin, 1,3-dichloroacetone, and methylene chloride are mutagenic (1 , 2) . Epidemiological evidence has provided further support that these compounds may be involved in prostate carcinogenesis. For example, cellulose ...

Dacryodes edulis; acetylcholinesterase; adenosinetriphosphatase; adipocytes; alpha-amylase; alpha-glucosidase; animal disease models; antioxidant activity; blood glucose; blood serum; body weight; butanol; catalase; cytotoxicity; enzyme activity; enzyme inhibition; ethanol; ethyl acetate; fractionation; fructose; gallic acid; glucose; glutathione; glycemic effect; glycogen; hexane; high performance liquid chromatography; hyperlipidemia; in vivo studies; insulin secretion; islets of Langerhans; metabolism; metformin; methylene chloride; myeloperoxidase; nitric oxide; noninsulin-dependent diabetes mellitus; oxidative stress; phosphorylase; rats; superoxide dismutase; traditional medicine; trees; vanillic acid; vanillin; Eastern ...

Polycyclic Aromatic Hydrocarbons (PAHs) are environmental pollutants that have received considerable attention because of their carcinogenic and mutagenic effects. Due to the extensive amount of data suggesting the hazards of these compounds, 16 PAHs are on the Environmental Protection Agency (EPA) Priority Pollutant List. These compounds are often emitted into the atmosphere by way of combustion processes. Thus, analysis of these compounds during coal combustion is an important task. Three 1000-hour coal combustion burns were performed using the 0.1 MW (0.3 m) bench-scale Fluidized Bed Combustor (FBC) in the Combustion Laboratory at Western Kentucky University. The data for this thesis were collected from the second and third 1000-hour experiments. An in-situ sampling system was designed for 16 PAHs specified by EPA, which consisted of a glass wool filter, condenser, glass fiber filter, Teflon filter, and Tenax. The filters and Tenax were extracted by methylene chloride and hexane, respectively,

The present invention provides a cellulose triacetate which exhibits a satisfactory filtration performance Thus, the present invention provides a cellulose triacetate whose occlusion constant (K) determined by the following method is 70 or less. Method: the cellulose triacetate is dissolved in a solvent mixture of methylene chloride/methanol (9/1 w/w) to form a 16% by weight (as a solid concentration) solution, which is then filtered under a constant pressure at the filtration pressure of 3 kg/cm.sup.2 and the temperature of 25.degree. C. using a muslin filter to determine a filtered volume with the lapse of time, from which the slope of a linear curve represented by t/V-t (wherein t is a filtration time (sec) and V is a filtered volume (ml)) is calculated to obtain an occlusion constant (K) where K=slope.times.2.times.10.sup.4.

No. Cosmetics and their ingredients (with the exception of color additives) are not regulated or overseen by the FDA. There are regulations, however, that prohibit or restrict the use of certain dangerous cosmetic ingredients, including mercury, vinyl chloride, chloroform, and methylene chloride, among others.. Under the current laws, the FDA does not substantiate or approve efficacy or safety claims of cosmetic products. Furthermore, the terms hypoallergenic, non-comedogenic, fragrance-free, gluten-free, natural, and dermatologist recommended or tested are not regulated or overseen by the FDA.. Cosmetic companies and manufacturers have the responsibility to ensure the safety of their products. They are not, however, required to submit safety information or product formulation to the FDA. Safety recalls of cosmetics are voluntarily taken by manufacturers or distributors to remove products that are hazardous or deceptive to the public. The FDA is not authorized to order recalls of ...

Arrow Chemical is a world famous chemical supplier. With the goal of customer satisfaction, Arrow focuses on Propylene Carbonate, Propylene Glycol, Dimethyl Carbonate, Methylene Chloride, Aniline, Polyaluminium Chloride, Polyacrylamide and other chemical products production, research, marketing and investment, to provide chemical purchasing one-stop service for the whole industry chain.

Precautions. It is important to review all of the safety material provided with a degreasing product.. Upon review of a global chemical companys Trichloroethylene-based metal degreasing products Safety Assessment Sheet, we found that they recommend adequate ventilation be provided in the workplace to minimize the possibility of inhalation, which may be hazardous.. In addition, the assessment sheet also warns that the initial effects of excessive inhalation. exposure are dizziness, loss of coordination, sleepiness and symptoms of anesthesia. Excessive exposure may cause systemic injury or even death.. Industrial Hygiene Testing. At Sentry Air Systems, we are continually testing our products for efficiency against chemical fumes and various particulate.. Our granule activated carbon filters have proven exceptional against common hazardous chemical fumes like sulfur dioxide, methylene chloride, hydrochloric acid, and others.. We are in the process of planning a similar test to see the ...

Link to pdf of Chapter 2 Occupational Medicine: State of the Art Reviews; Chapter 2: Research Findings Linking Workplace Factors to CVD Outcomes Authors: Paul Landsbergis, Kyle Steenland, Lawrence Fine, Karen Belkic, Peter Schnall, Dean Baker, Tores Theorell, Johannes Siegrist, Richard Peter, Robert Karasek, Michael Marmot, Chantal Brisson, Finn Tuchsen Abstract A variety of workplace conditions have been implicated as risk factors for cardiovascular disease (CVD). These include shift work, long work hours, and chemical (e.g., carbon disulfide, nitrate esters, carbon monoxide, methylene chloride, solvents), physical (e.g., cold, heat, noise, passive smoking, sedentary work) and psychosocial conditions. The most consistent evidence is provided by sources of psychosocial stress at work. The evidence strongly suggests a causal association between job strain (a combination of high psychological demands and low job decision latitude, or low job control) and hypertension and CVD. Low decision latitude is also

Hazards: Danger! Poison! Vapor Harmful. May affect the brain or nervous system causing dizziness, headaches or nausea. Reduces the bloods oxygen-carrying capacity. Causes eye, skin, nose and throat irritation. May be harmful if absorbed through the skin. Cannot be made non-poisonous. Warning: Use of this product will expose you to methylene chloride and benzene which are known to cause cancer and to toluol which is known to cause birth defects and other reproductive harm. Notice: Reports have associated repeated and prolonged occupational over exposure to solvents with permanent brain and nervous system damage. Intentional misuse by deliberately concentrating and inhaling the contents may be harmful or fatal. Precautions: Contact with flame or hot surface may produce toxic gases. Keep away from heat and flame. Vapor may cause flash fire. Do not smoke. Use only with adequate ventilation. Do not breathe vapor or spray mist. Use this product outdoor, if possible. If you must use indoors, open all ...

At Du Ponts Belle plant in West Virginias chemical-producing Kanawha Valley, 1.4 million pounds of chemicals went into the air and 4.5 million pounds to the water last year. The 31 reported chemicals included everything from quick-acting toxics like sulfuric acid to cancer-causing chemicals like formaldeyde. Du Pont, ranked number one with $13 billion in chemical sales last year, submitted about 800 reports from 80 plants and refineries for a national total of about 55 million pounds to the air, 155 million pounds to the water, 235 million pounds to deep wells and 1 million pounds to the land.. Dow Chemical Companys plant in Midland, Michigan reported annual emissions of 5.5 million pounds of chemicals under the law, 70 percent of them airborne, 26 percent to the water and 3.7 percent to Dows licensed landfill. About half of the air emissions involved methylene chloride, a controversial chemical suspected to be a carcinogen. Nationally, based on 300 reports from 15 facilities, Dow estimated ...

http://wakingtimes.com/ads/stepoutsidethebox.htmlhttp://wakingtimes.com/..., also known as acesulfame potassium, represents one of the food additives used for sweetening aliments and drinks. It is approved by the FDA, but there are several potential problems correlated with consumption of this food additive. Even though there are many studies that attest its safety, acesulfame potassium is still suspected of causing benign thyroid tumors. In rats, the development of such tumors took only 3 months, a period in which the concentration of this additive in the consumed food was between 1 and 5 percent. This is a very short period of time, so the substance is believed to have significant carcinogenic properties. Methylene chloride, a solvent used in the manufacture of acesulfame potassium, is the substance that may give the food additive its potential carcinogenic characteristics ...

In humans, glutathione-dependent conjugation of halomethanes is polymorphic, with 60% of the population classed as conjugators and 40% as non-conjugators. We report the characterization of the genetic polymorphism causing the phenotypic difference. We have isolated a cDNA that encodes a human class Theta GST (GSTT1) and which shares 82% sequence identity with rat class Theta GST5-5. From PCR and Southern blot analyses, it is shown that the GSTT1 gene is absent from 38% of the population. The presence or absence of the GSTT1 gene is coincident with the conjugator (GSST1+) and non-conjugator (GSTT1-) phenotypes respectively. The GSTT1+ phenotype can catalyse the glutathione conjugation of dichloromethane, a metabolic pathway which has been shown to be mutagenic in Salmonella typhimurium mutagenicity tester strains and is believed to be responsible for carcinogenicity of dichloromethane in the mouse. In humans, the enzyme is found in the erythrocyte and this may act as a detoxification sink. ...

This invention discloses a new technology related to cellulose fiber reinforced cement composite materials using cellulose fibers that are treated with inorganic and/or organic resins to make the fibers more hydrophobic, as well as other chemical treatments. This invention discloses four aspects of the technology: fiber treatment, formulations, methods and the final product. This technology advantageously provides fiber cement building materials with the desirable characteristics of reduced water absorption, reduced rate of water absorption, lower water migration, and lower water permeability. This invention also impart the final products improved freeze-thaw resistance, reduced efflorescence, and improved rot and UV resistances, compared to conventional fiber cement products. These improved attributes are gained without loss in dimensional stability, strength, strain or toughness. In some cases the physical and mechanical properties are improved. This

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International Paper Global Cellulose Fibers has a multi-mill network producing cellulose fibers and fluff pulp used in consumer goods that people depend on every day.

Hypoglycemic and/or anti-hyperglycemic activities have been recorded with numerous plants, many of which are used as traditional herbal treatments of diabetes. Albizzia Lebbeck Benth. stem bark have been used in traditional medicine along with some preliminary reports on its hypoglycemic action. The aim of present investigation was to evaluate the antidiabetic and antioxidant activities of methanolic extract of stem bark of Albizzia Lebbeck Benth. in streptozotocin induced diabetic rats. The powdered stem bark of Albizzia Lebbeck Benth.. was extracted with methanol (MeOH) using soxhlation method and subjected to phytochemical analysis. The methanol/dichloromethane extract of Albizzia Lebbeck Benth. (ALEx) was concentrated to dryness using Rotary Evaporator. Diabetes was experimentally induced in the rats by single intraperitoneal administration of Streptozotocin (60 mg/kg). They glycemic control was measured by the blood glucose, glycated heamoglobin and plasma insulin. The oxidative stress was

0140]Into a 3 mL three-neck round bottom flask equipped with mechanical stirrer and pressure equalizing addition funnel under nitrogen atmosphere was added solution of 5.04 parts of phosphorous oxychloride in 300 mL of dichloromethane and cooled to 5° C. A solution of 3.56 parts of (3-Hydroxy-4-cyanophenyl)methoxymethylene tricyclo[7.3.1.02,7]tridec-2,7-ene and 9.09 parts of anhydrous pyridine in 25 mL of dichloromethane was added to the cold solution over 4 hrs. The reaction mixture was stirred at room temperature for 3 hrs. The reaction mixture cooled to 5° C. and a solution of 5.82 parts of 3-hydroxypropionitrile and 6.47 parts of anhydrous pyridine in 250 mL dichloromethane was added drop wise to the reaction mixture over 45 min. The reaction mixture was stirred for 48 hrs at room temperature and cooled to 5° C. for 1 hr 15 min. The mixture was filtered and washed with cold 25 mL dichloromethane. The solvent was evaporated under reduced pressure and mixture was purified by chromatography ...

TY - JOUR. T1 - Glutathione S-transferase T1 and M1. T2 - Gene sequence variation and functional genomics. AU - Moyer, Ann. AU - Salavaggione, Oreste E.. AU - Hebbring, Scott J.. AU - Moon, Irene. AU - Hildebrandt, Michelle A T. AU - Eckloff, Bruce W.. AU - Schaid, Daniel J. AU - Wieben, Eric D. AU - Weinshilboum, Richard M. PY - 2007/12/1. Y1 - 2007/12/1. N2 - Purpose: The glutathione S-transferases (GSTs) catalyze the glutathione conjugation of reactive electrophiles, including carcinogens and many antineoplastic drugs. GSTT1 and GSTM1 are polymorphically deleted, but the full range of genetic variation in these two genes has not yet been explored. We set out to systematically identify common polymorphisms in GSTT1 and GSTM1, followed by functional genomic studies. Experimental Design: First, multiplex PCR was used to determine GSTT1 and GSTM1 copy number in 400 DNA samples (100 each from 4 ethnic groups). Exons, splice junctions, and 5′-flanking regions (5′-FR) were then resequenced using ...

TY - JOUR. T1 - Spectroscopic studies on the radical-cation dimer of a model compound of poly(p-phenylenevinylene). Similarities between the dimer and the state of positive polarons in the sulfuric-acid-treated polymer. AU - Sakamoto, Akira. AU - Furukawa, Yukio. AU - Tasumi, Mitsuo. PY - 1997/3/6. Y1 - 1997/3/6. N2 - Reversible dimerization of the radical cations of a model compound [CH3(C6H4CH=CH)2C6H 4CH3] of poly-(p-phenylenevinylene) (PPV) in dichloromethane solution has been studied by electronic absorption, electron spin resonance, and resonance Raman spectroscopy. The electronic absorption spectrum of the radical-cation monomer drastically changes upon dimerization; the absorption maxima of the monomer are located at 636 and 1200 nm (15 700 and 8330 cm-1) and those of the dimer at 527 and 981 nm (19 000 and 10 200 cm-1). The monomer - dimer equilibrium constants (Ks) at various temperatures have been determined from the observed temperature dependence of the electronic absorption ...

Isolation and Characterization of Anti Sickling Bioactive Compounds from Seeds of Picralima Nitida Stapf (Apocynaceae). Aim: To isolate and Characterize the anti-sickling bioactive compounds of Ethanol fraction of Picralima nitida seeds. Methods: The fresh matured fruits (8 kg) of P. nitida were cut into transverse section to expose the seeds, The seeds were air-dried and then pulverized into a homogenous powder, The organoleptic properties (taste, colour, odor, texture) of the powdered P. nitida were determined using the sensory organs. A 2.5 kg pulverized seeds were extracted with methanol and concentrated in a rotary evaporator to yield a dried residue. The methanol extract of Picralima nitida was then defatted using n-hexane. The extract was successively fractionated with different solvents, chloroform, dichloromethane, ethyl acetate and 50% ethanol in increasing order of polarity to obtain the chloroform fraction (CF), dichloromethane fraction (DCMF), ethyl acetate fraction (EF) and ethanol ...

In 2018, Top exporters of Tissue, towel, napkin stock or similar; for household or sanitary use, cellulose, wadding webs of cellulose fibres, in rolls exceeding 36cm in width or rectangular sheets with one side more than 36cm in unfolded state to Gabon were Tunisia ($736.46K , 547,435 Kg), European Union ($239.96K , 180,531 Kg), Indonesia ($219.63K , 209,568 Kg), Italy ($209.52K , 172,478 Kg), Turkey ($79.68K , 40,597 Kg ...

In 2018, Top exporters of Tissue, towel, napkin stock or similar; for household or sanitary use, cellulose, wadding webs of cellulose fibres, in rolls exceeding 36cm in width or rectangular sheets with one side more than 36cm in unfolded state to Iceland were Tunisia ($1,791.97K , 1,335,320 Kg), European Union ($1,595.52K , 779,734 Kg), Denmark ($553.91K , 34,374 Kg), Netherlands ($348.90K , 236,132 Kg), Italy ($294.61K , 246,847 Kg ...

Page contains details about cellulose fiber modified by Gd4O3F6:Eu3+ nanoparticles . It has composition images, properties, Characterization methods, synthesis, applications and reference articles : nano.nature.com

Technocel® is used as filler in a broad range of areas. An important feature of Technocel alpha cellulose is its high degree of purity. It contains no lignin, hemicellulose or other impurities. The fiber structure of echnocel reduces shrinkage and cracking in products such as paints.. If you have any questions regarding cellulose fibers and what would suit your application the best, dont hesitate to contact us. Our sales team will help you finding the right filtration solution for all your applications.. ...

Read A Study of the Affinity of Dyes for Cellulose Fiber within the Framework of a Fragment Approach in QSPR, Russian Journal of Applied Chemistry on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

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This page contains information on the chemical 2-Propenoic acid, ethyl ester, telomer with tetrachloromethane including: 2 synonyms/identifiers.

The effect of RU486, a synthetic progesterone receptor antagonist, on basal uterine prostaglandin (PG) release and release in response to oxytocin injection has been investigated in late-pregnant sheep (days 135-140 of gestation). Fifteen hours after i.m. injection of RU486 (50 mg; n = 5) or vehicle alone (n = 4), bolus injections of oxytocin (50, 500 and 5000 mU) were administered via a uterine artery ipsilateral to the pregnant uterine horn at 2-hourly intervals. Uteroovarian vein concentrations of 13,14-dihydro-15-keto PGF2α (PGFM) and PGE2 were determined before and during oxytocin stimulation. Basal concentrations of both PGFM and PGE2 were significantly (P , 0·001) increased in ewes 15 h after RU486 administration compared with ewes receiving vehicle alone. Concentrations of PGFM, but not PGE2, increased significantly (P , 0·001) following injection of each dose of oxytocin in both treated and untreated animals. The response to oxytocin, measured both as the area under the curve and as ...