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 ?
The Commissioner said FDA does "not have comprehensive information on the prevalence of methylene chloride processing for coffee that is imported into the U.
Methylene chloride continues in favor among several decaffeinators and many American roasters.
My curiosity aroused, I decided to do a little digging and pulled out the books, opened the file folders, made a pot of caffeinated coffee, and got on the telephone to my coffee friends to see what I would find out about methylene chloride decaffeinated coffee.
The methylene chloride market size in terms of value was worth USD 708.
Application of physiologically based pharmaco-kinetic modeling in setting acute exposure guideline levels for methylene chloride.
ACA's comments discussed the specific listing of paint and varnish strippers containing methylene chloride.
The study found significant positive linear trends between pollutant concentration and ASD for diesel particulate matter, lead, manganese, methylene chloride, mercury, nickel and overall metal score.
Long-term, the chemical exposure could be even more serious, as methylene chloride may be a carcinogen.
Known as the direct method of removing caffeine from green beans, methylene chloride (dichloromethane) is probably the most commonly used chemical solvent to extract caffeine.
The company further said the technology will provide an excellent opportunity to pharmaceutical and nutraceuticals industry players to get rid of organic solvents like IPA and methylene chloride, which are toxic to the environment and coating operators.
The CPVC pipe sample was prepared for GC-MS analysis by washing the surface of the interior of the pipe with 5 mL of methylene chloride (containing 5-ppm n-dodecane).
In this study, we report on the methylene chloride fraction from SC exerting cytotoxicity against prostate and breast cancer cells in a dose-dependent manner.