Dichloromethane CAS  75-09-2

Dichloromethane, an organic compound with the formula CH2Cl2, is a colorless transparent liquid with a pungent odor similar to ether. Slightly soluble in water, soluble in ethanol and ether, under the usual conditions of use is a non-combustible low boiling point solvent, its vapor in high temperature air becomes a high concentration, it will generate a weak burning mixture of gases, commonly used to replace flammable petroleum ether, ether and so on.

Dichloromethane (DCM)

Other names methylene chloride, methylene chloride

Chemical formula CH2Cl2

Molecular weight 84.933

CAS login number 75-09-2

EINECS entry number 200-838-9

Melting point -97 ℃

Boiling point 39.8 ℃

Water soluble and slightly soluble

Density 1.325 g/cm³

Colorless transparent volatile liquid on the outside

Flash point -14.1 ℃ (no flash point at normal temperature and pressure)

Security description S7; S16; S23; S24/25; S36/37; S45

Danger symbol Xn

Hazard description R40

UN Dangerous Goods No. 1593

MDL number MFCD00000881

ETECS number PA8050000

BRN number 1730800

use

1. It is used for grain fumigation and refrigeration of low pressure refrigerator and air conditioning unit.

2, used as solvent, extractant, mutagen.

3, used in the electronics industry. Commonly used as a cleaning and degreasing agent.

4, used as dental local anesthetic, refrigerant, fire extinguishing agent, metal surface paint cleaning degreasing and defilm agent.

5, used as an intermediate in organic synthesis.

Leakage emergency treatment

Quickly evacuate the personnel from the contaminated area to the safety zone, isolate them, and strictly restrict access. Cut off the fire. Emergency responders are advised to wear self-contained positive pressure air respirators. And the use of sewer, drainage ditch and other restricted space.

Small amount of leakage: adsorption or absorption with sand or other non-combustible materials.

A large number of leaks: build a embankment or control pit containment.