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Topic: Methylene chloride


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  Safety and Health Topics: Methylene Chloride
Methylene chloride, also called dichloromethane, is a volatile, colorless liquid with a chloroform-like odor.
Methylene chloride is used in various industrial processes, in many different industries including paint stripping, pharmaceutical manufacturing, paint remover manufacturing, and metal cleaning and degreasing.
OSHA considers methylene chloride to be a potential occupational carcinogen.
www.osha.gov /SLTC/methylenechloride   (180 words)

  
 Methylene Chloride
Methylene chloride is used in aerosols as a strong solvent, a flammability suppressant, vapor pressure depressant, and viscosity thinner.
Methylene chloride is used as an extractant in the recovery and purification of a wide variety of materials including oils, fats, and waxes and for a variety of laboratory analyses.
Methylene chloride is exempt in almost all of the states with VOC regulations, in accordance with federal guidelines.
www.hsia.org /white_papers/dcm%20wp.htm   (3986 words)

  
 ATSDR - ToxFAQs™: Methylene Chloride
Methylene chloride is used as an industrial solvent and as a paint stripper.
Methylene chloride is mainly released to the environment in air.
Methylene chloride does not easily dissolve in water, but small amounts may be found in drinking water.
www.atsdr.cdc.gov /tfacts14.html   (0 words)

  
 Flash-spinning process - Patent 5874036
Methylene chloride and 1,2-dichloroethylene are such good solvents for the polyolefins that are commercially employed in the formation of flash-spun products (i.e., polyethylene and polypropylene) that the cloud-point pressure is so close to the bubble point that it is not possible to operate efficiently.
Where solvent ratios are expressed herein, the first number refers to weight percent of the methylene chloride or dichloroethylene primary solvent in the solvent mixture, and the second number refers to the weight percent of the co-solvent in the solvent mixture.
Due to the relatively high toxicity of methylene chloride and the slight flammability of 100% dichloroethylene, it is advantageous for the solvent mixture to comprise a high proportion of the more benign co-solvent.
www.freepatentsonline.com /5874036.html   (3572 words)

  
 ATSDR - MMG: Methylene Chloride
Methylene chloride is a combustible liquid, but its vapor is flammable only when present in relatively high concentrations (14% to 22% in air).
Methylene chloride is an important solvent in paint and varnish strippers and in degreasing agents.
Methylene chloride is metabolized in the liver, in part to carbon monoxide, which will produce elevated carboxyhemoglobin levels and decrease the oxygen-carrying capacity of the blood.
www.atsdr.cdc.gov /MHMI/mmg14.html   (0 words)

  
 Chlorine industry chemicals, natural organochlorines and chlorinated solvents : Eurochlor sitemap
ECSA statement on the OSHA’s new methylene chloride OEL
Atmospheric monitoring for methylene chloride during paint removal from external façades
Perchloroethylene and Methylene Chloride: Change of R 40 risk phrase
www.eurochlor.org /sitemap   (0 words)

  
 Methylene Chloride Management Plan
Methylene chloride is used as a solvent, especially where high volatility is required.
Areas where the concentration of airborne methylene chloride exceeds either the PEL or STEL shall be established as regulated areas.
A statement that the employee has been informed that methylene chloride is a potential occupational carcinogen, of risk factors for heart disease, and the potential exacerbation of underlying heart disease by exposure to methylene chloride through its metabolism to carbon monoxide.
www.des.umd.edu /os/mngmt/methylenechloride.html   (3528 words)

  
 Eco-USA: Methylene chloride
Methylene chloride, also known as dichloromethane, is a colorless liquid that has a mild sweet odor, evaporates very quickly, and will not easily burn.
Methylene chloride is mainly released to the environment in air and to a lesser extent in water and soil, due to industrial and consumer uses.
Methylene chloride that is present in water is broken down slowly by reactions with other chemicals or by bacteria.
www.eco-usa.net /toxics/mecl.shtml   (1216 words)

  
 Methylene chloride (PIM 343)
Methylene chloride does not appear to be directly genotoxic in vivo, but it does produce altered homeoestasis in the lung and liver of mice (tissues susceptible to tumour development) and it is therefore probable that methylene chloride does affect a later stage of the tumorigenic process.
Methylene chloride is a potent irritant of mucous membranes.
Methylene chloride, both as a liquid and a vapour, is a potent cutaneous and mucous membrane irritant (Ellenhorn & Barceloux, 1988).
www.inchem.org /documents/pims/chemical/pim343.htm   (5384 words)

  
 Methylene Chloride (Dichloromethane) | Technology Transfer Network Air Toxics Web site | US EPA
Methylene chloride is predominantly used as a solvent in paint strippers and removers; as a process solvent in the manufacture of drugs, pharmaceuticals, and film coatings; as a metal cleaning and finishing solvent in electronics manufacturing; and as an agent in urethane foam blowing.
Methylene chloride is also approved for use as a postharvest fumigant for grains and strawberries and as a degreening agent for citrus fruit.
Methylene chloride is slightly soluble in water and is nonflammable.
www.epa.gov /ttn/atw/hlthef/methylen.html   (1404 words)

  
 Methylene chloride (HSG 6, 1987)
Methylene chloride is rapidly absorbed via the gastrointestinal tract and crosses the placenta and blood-brain barrier.
Methylene chloride is mutagenic in bacteria, fungi, and in the fruit fly.
Methylene chloride is only slightly toxic for aquatic organisms, concentrations of between 190 and 330 mg/litre being lethal for half the number of organisms (LC) exposed for 4 days.
www.inchem.org /documents/hsg/hsg/hsg006.htm   (3073 words)

  
 [No title]
Common Paint Remover Solvents and Their Hazards Methylene Chloride: Methylene chloride is a non-flammable solvent whose hazards include irritation of the skin and upper respiratory tract, solvent narcosis, pulmonary edema (on inhalation of large amounts), and heart arrhythmias (irregular heart beats).
Methylene chloride also can cause heart attacks because it is metabolized to carbon monoxide in the bloodstream.
Methylene chloride decomposes in the presence of flames, hot surfaces, or ultraviolet light to produce highly toxic phosgene gas.
www.uic.edu /spha/glakes/harts1/HARTS_library/paintrem.txt   (1962 words)

  
 Methylene Chloride Exposure Plan - Environmental Health & Safety - Tufts University
The rule making effort is based on studies that indicate that exposure to methylene chloride may have adverse effects on the heart, central nervous system and liver and employees exposed to methylene chloride may be at an increased risk of developing cancer.
Methylene chloride, also known as dichloromethane, is a colorless, volatile, nonflammable liquid with a penetrating, ether-like odor.
The potential for methylene chloride exposure is greatest in laboratories using the chemical as a solvent and extracting agent.
publicsafety.tufts.edu /ehs/?pid=11   (1043 words)

  
 Methylene Chloride Free Paint Stripper | Methylene Chloride Free Paint Remover | Non Methylene Chloride Paint Removal
EFS-2500 is a new generation of EFS-2500 is a new generation of non methylene chloride paint remover that works!
Our product contains no methylene chloride, no formic acid, nor carbonic acid, and is a natural alternative to conventional paint removers.
Learn more about our methylene chloride free paint stripper / remover product by visiting the EFS-2500 products page for product detail information, datasheet specifications, lab test results, and product demonstration slideshows.
www.m-tc.com /paint_stripper/methylene_chloride_free_paint_stripper.htm   (298 words)

  
 Health and Safety: Methylene Chloride is Worth the Worry (5/97)
Methylene chloride has been used for decades in paint strippers and rubber cements, as a solvent in vapor degreasing tanks, as a propellant for sprays (such as hair sprays), and as a blowing agent in the manufacture of flexible foams.
Because methylene chloride is suspected to be a human cancer agent, many manufacturers try to disguise its use by using other chemical names for it.
Pure methylene chloride is a clear, colorless, volatile liquid with a characteristic, ether-like odor.
www.ranknfile-ue.org /h&s0597.html   (808 words)

  
 [No title]
This risk evaluation of methylene chloride has two aspects: (1) Assessment of exposure to the impurity from the petitioned use of the additive; and (2) extrapolation of the risk observed in the animal bioassay to the conditions of probable exposure to humans.
Methylene Chloride FDA has estimated the exposure to methylene chloride from the petitioned and regulated uses of polyestercarbonate resins as articles intended to contact food to be no more than 4.9 parts per billion in the daily diet (3 kilogram), or 15 micrograms per person per day (Ref. 1).
The resins are manufactured using a phthaloyl chloride/carbonyl chloride mole ratio of 0.81 to 5.7/1 and isophthaloyl chloride/terephthaloyl chloride mole ratio of 0.81/1 or greater.
www.fda.gov /ohrms/dockets/98fr/051999A.txt   (2025 words)

  
 American Converters Eliminates Methylene Chloride Based Adhesives - MnTAP
Methylene chloride based adhesive is applied to each component by either a spray gun or a mechanical roller.
The major driver for this project was a decision by the Occupational Safety and Health Administration (OSHA) to lower the limit on worker exposures to methylene chloride due to it being a potential carcinogen.
If the company was to comply with the rule while continuing to use methylene chloride adhesives, programs for routine air monitoring and medical surveillance of affected employees would have to be implemented.
www.mntap.umn.edu /intern/projects/itam-p3.htm   (1480 words)

  
 SAFETY SOLUTIONS: Methylene Chloride: Plastic Distributor & Fabricator
Methylene Chloride: The OSHA standard for methylene chloride was promulgated January 10, 1997.
Data obtained by the National Toxicology Program from studies with methylene chloride using rats demonstrate exposure and dose-related increases in benign mammary tumors in males and females, respectively, and exposure-related malignant tumors of the lung and liver in male and female mice.
Provide all workers who are or who may be exposed to methylene chloride with a copy of this CIB pointing out the list of adverse symptoms and health effects associated with exposure to methylene chloride (Table 2).
www.plasticsmag.com /safetysolutions.asp?fIssue=Jan/Feb-03   (1242 words)

  
 Methylene chloride [factsheet]
These tests include direct measurement of methylene chloride in the air and analysis of methylene chloride present in the blood and urine.
* Methylene chloride is predominantly used as a solvent in paint strippers and removers; as a process solvent in the manufacture of drugs and pharmaceutical and film coatings; and as a metal cleaning and finishing solvent in electronics manufacturing.
* Methylene chloride is also approved for use as a postharvest fumigant for grains and strawberries and as a degreening agent for citrus fruit.
www.lakes-environmental.com /toxic/METHYLENE_CHLORIDE.HTML   (1103 words)

  
 Chemical Fact Sheets -- Methlene Chloride
Methylene chloride is a clear, non-flammable liquid with a sweet, pleasant odor.
Methylene chloride will not remain in the food chain; sunlight will break down the compound when released into the air.
If methylene chloride is placed in a landfill or discharged to soil, it can seep into groundwater and contaminate nearby wells.
www.dhfs.state.wi.us /eh/chemFS/fs/MthylChlrde.htm   (764 words)

  
 AFGE | Methylene Chloride
Exposure to methylene chloride has been shown to cause damage to the nervous system, heart, liver, and skin.
Methylene chloride is used to clean metal and plastic, as a vehicle for adhesives, and in the manufacture of foamed plastics.
Although the use of methylene chloride has been significantly reduced or even eliminated at many facilities over the years, exposure to methylene chloride vapors remains a health issue in the furniture and aircraft industries.
www.afge.org /Index.cfm?Page=MethyleneChloride   (215 words)

  
 Successful Furniture Stripping: Special Precautions For Methylene Chloride Strippers
Methylene chloride, the main solvent in many “fast” strippers, can cause skin and lung irritation, exacerbate the symptoms of heart disease, and may cause cancer.
Inhaling methylene chloride reduces the amount of oxygen in the blood and can trigger a medical emergency in people with heart disease.
Methylene chloride (also called dichloromethane or DCM) strippers soften all finishes, including paint, in as little as 10 minutes.
www.rd.com /familyhandyman/content/18196/1   (763 words)

  
 Lab Safety Supply - EZ Facts Safety Info - Document #173, The Methylene Chloride Standard
Methylene chloride, also known as dichloromethane, is used in many types of industries, including paint stripping, metal cleaning and degreasing, and polyurethane foam production.
Because methylene chloride is such a health hazard, workers and safety and health advocates have been calling for a new safety standard to address the issue.
If respirators are used to control methylene chloride exposure, they must be used according to 29 CFR 1910.134 (see EZ Facts Document #275).
www.labsafety.com /refinfo/ezfacts/ezf173.htm   (1922 words)

  
 Dichloromethane / Methylene Chloride
Methylene chloride is approved as an extraction solvent for spices and hops.
In animals that have been exposed to vapors or directly to methylene chloride, the cornea was damaged.
Doctors can also test urine for methylene chloride or for chemicals such as formic acid that are produced as methylene chloride breaks down in the body.
www.temarry.com /chemicals/dichloromethane.htm   (1079 words)

  
 UAW H&S - Toxic Substitute Proposed for Methylene Chloride
The UAW petitioned for the methylene chloride standard and recently negotiated a settlement of industry lawsuits against the rule.
Suppliers of n-propyl bromide have suggested a TLV of 100 ppm, compared to the PEL of 25 ppm for methylene chloride in the face of equivalent or greater toxicity in equivalent tests.
Additional provisions in the OSHA methylene chloride standard protect worker health and the environment to a greater degree than would be routine for an unregulated material.
www.uaw.org /hs/00/01/hs02.html   (313 words)

  
 Methylene Chloride
Methylene chloride is used as a solvent in many of ECU's research laboratories.
As of April 1997, Methylene chloride use is regulated by a revised OSHA standard (29 CFR 1910.1052), available at http://www.osha.gov.
Some of this toxicity is a result of methylene chloride being metabolized into carbon monoxide within the body.
www.ecu.edu /oehs/LabSafety/MethyleneChloride.html   (340 words)

  
 Howstuffworks "How are coffee, tea and colas decaffeinated?"
Methylene chloride is a chemical used as a solvent to extract caffeine from many raw materials.
Molecules of caffeine bond to molecules of methylene chloride.
Many of the flavors and oils are also extracted during this process, so the solution is treated with methylene chloride and then returned to the material for reabsorption of the flavorings.
www.howstuffworks.com /question480.htm   (559 words)

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