The use of dichloromethane

Dichloromethane fraction: CH2Cl2. Is not burnable low baking point solvent, is generally acclimated instead of petroleum ether, ether flammable, and can be acclimated for dental bounded anesthetic, refrigerant and abolition agent. A achromatic liquid. Have a that appears to smell of ether. Volatile. The gas does not burn, nor atomic admixture with air. With ethanol, ether and N, N- two DMF miscible, acrid in about 50 locations water. Relative body ( d204 ) 1.3255. Freezing point -95℃. Baking point is 39.75 ℃. The refractive basis ( n20D ) 1.4244. Low toxicity, LD50 ( rats, belly lavage ) 2524mg/kg. High concentrations of abasement narcotic. Irritation. Sealing the adumbration to abstain ablaze preservation. Bread-and-butter for artificial acetate. Fats and oils abstraction agent. Ether and petroleum ether. Closed packing, abroad from fire, calefaction source, and stored in a dry and aerial place. And aliment chemicals, metal crumb locations storage. Eating, bubbler water, emetic. Methylene dichloride methane chloride contagion is minimal, the toxicity of carbon tetrachloride toxicity is alone 0.11%. If the dichloromethane anon burst into the eyes, affliction and corrosion. Methylene chloride breath anesthesia.

Dichloromethane has the advantages of able abandoning accommodation and low toxicity, is broadly acclimated in assurance accurate film, polycarbonate, the butt is acclimated as solvent, metal degreasing agent, aerosol sprays, polyurethane bubbles agent, absolution agent, acrylic remover. Methylene chloride is a achromatic liquid, as acknowledgment average in the biologic industry, for the alertness of ampicillin, carbenicillin and cephalothin; aswell acclimated as blur assembly in the solvent, oil dewaxing solvents, aerosol propellants, constructed amoebic extractant, polyurethane cream artificial acclimated in the assembly of bubbles abettor and metal charwoman agent. Dichloromethane is mainly acclimated in the fields of blur assembly and anesthetic in china. For burning of blur assembly accounted for 50% of absolute consumption, anesthetic accounted for 20% of absolute consumption, burning of charwoman abettor and actinic industry accounted for 20% of absolute burning accounted for 10%, other. Methylene chloride is aswell acclimated in automated algidity arrangement acclimated as a refrigerant used, but the abuse is actual great, and accessible blaze or hot article acquaintance can aftermath baneful phosgene. In boiling air can be anatomize to accomplish hydrogen chloride trace, ablaze can aswell advance hydrolysis and acerb to metal enhanced.

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