Methylene Chloride


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methylene chloride

[′meth·ə‚lēn ′klȯr‚īd]
(organic chemistry)
CH2Cl2 A colorless liquid, practically nonflammable and nonexplosive; used as a refrigerant in centrifugal compressors, a solvent for organic materials, and a component in nonflammable paint-remover mixtures.

Methylene Chloride

 

CH2C12; a colorless liquid with an odor similar to that of chloroform. Boiling point, 40°C ; density, 1.3255 g/cm3 at 20°C . It is miscible with organic solvents; its solubility in water is 1.32 g per 100 g at 25°C . Methylene chloride reacts with water to form an azeotrope (boiling point, 38. TC; 98.5 percent CH2C12).

Methylene chloride is prepared commercially by chlorination of methane, which also produces methyl chloride and chloroform. It is used as a solvent for plastics, rubber, cellulose esters, and fats, as well as in the extraction of essential oils. Methylene chloride has a mild narcotic effect.

References in periodicals archive ?
Mouse liver glutathione S-transferase mediated metabolism of methylene chloride to a mutagen in the CHO/HPRT assay.
cochinchinensis using cancer cell line MCF-7 (breast cancer) showed that n-hexane, methylene chloride and ethyl acetate gave IC50 values respectively of 84.
Decaf coffee probably does not pose a significant risk, even if you drink a brand that uses methylene chloride.
China's Foreign Trade and Economic Cooperation Ministry announced Wednesday it will launch an antidumping investigation into imports of methylene chloride from the United States, Britain, Germany, France, South Korea and the Netherlands.
Coating is designed for use in areas exposed to strong solvents such as methylene chloride.
Harmful Chemicals Found in Some Common Inhalants Aerosols Asthma Sprays fluorocarbon Deodorants, Air Fresheners butane, propane, fluorocarbon Hair Sprays butane, propane, fluorocarbon Paint Sprays butane, propane, fluorocarbon, hydrocarbons, toluene Cleaning Agents Degreasers tetrachloroethylene, trichloroethane, trichloroethylene Spot Removers tetrachloroethylene, trichloroethane Food Products Whipped Cream nitrous oxide Solvents Correction Fluid toluene, methylene chloride, methanol Fire Extinguishers bromochlorodifluoromethane Lighter Fluid butane, isopropane Polish Removers acetone Paint Removers toluene, methylene chloride, methanol Paint Thinners toluene, methylene chloride, methanol Source: National Inhalation Prevention Coalition
Also, it was determined that the carcinogen methylene chloride, which had not been detected before in tests, was being emitted.
The agency states that methylene chloride can cause central nervous system disorders such as headaches, dizziness, nausea and memory loss if inhaled for long periods of time and has produced liver, kidney and cardiovascular disorders in animal studies.
The tanks pumped in an aerosol consisting of CS powder, a chemical warfare agent that causes tearing, temporary blindness, nausea, and vomiting, and methylene chloride, a toxic and volatile carrier that forms flammable mixtures when exposed to the air.
However, he quips: "l think methylene chloride [an animal carcinogen] is a dandy solvent and would hate not to be able to use it.
Causing ozone to be formed, VOCs include all organic compounds except methane, ethane, methylene chloride and methyl chloroform.