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Dichloromethane

Dichloromethane

CAS No.: 75-09-2
Molecular formula: CH2Cl2
Molecular weight: 84.93
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Nature

Melting point

-97 °C

Boiling point

39.8-40 °C mm Hg(lit.)

Density

1.325 g/mL at 25 °C(lit.)

Vapor density

2.9 (vs air)

Vapor Pressure

24.45 psi ( 55 °C)

Refractive index

n20/D 1.424(lit.)

Flash point

39-40°C

Storage conditions

Store at RT.

Solubility

Miscible in ethyl acetate, alcohol, hexanes, methanol, diethyl ether, n-octanol, acetone benzene, carbon tetrachloride, diethyl ether and chloroform.

form

Liquid

colour

APHA: ≤10

Explosive limit

13-22%(V)

Water solubility

20 g/L (20 ºC)

Merck

14,6063

BRN

1730800

CAS database

75-09-2(CAS DataBase Reference)


Chemical properties

Colorless transparent volatile liquid. Has a pungent odor similar to ether. Dissolved in about 50 times of water, soluble in phenol, aldehyde, ketone, glacial acetic acid, triethyl phosphate, ethyl acetoacetate, cyclohexylamine. Miscible with other chlorinated hydrocarbon solvents such as ethanol, diethyl ether and N,N-dimethylformamide.


Use

It is a non-combustible low-boiling solvent. It is used as a solvent for cellulose acetate film formation, aerosols and antibiotics, vitamins. It is also used as an extractant, metal cleaner, etc.

1. Dichloromethane is the raw material for the production of the fungicides nitrile and imiprazole, and is also a good solvent.

2. In addition to organic synthesis, this product is also widely used as cellulose acetate film forming, cellulose triacetate spinning, petroleum dewaxing, aerosols and antibiotics, vitamins, solvents in the production of steroids, and metal surfaces. The paint layer is cleaned and degreased. In addition, it is also used for grain fumigation and refrigeration of low pressure freezer and air conditioning units. Used as an auxiliary blowing agent in the production of polyether urethane foams, and as a blowing agent for extruded polysulfone type foams.

3. Extraction solvent. Such as for extracting caffeine from coffee beans. It is also used as an extraction solvent for hops, spices and oleoresins. Pigment thinner.

4. Used as a solvent and also for organic synthesis

5. Used as a solvent in the resin and plastics industries. Widely used in medicine, plastics and film industries.

6. Cellulose acetate solvent. Fat and oil extractants. A substitute for ether and petroleum ether.


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