Dichloromethane

I. Quality Indicators

Appearance: Has a pungent odor similar to ether.

Melting Point: -95.1°C

Viscosity (20°C): 0.43 mPa·s.

Critical Temperature: 237°C,

Critical Pressure: 6.0795 MPa. 

Solubility: Insoluble in water, soluble in phenol, aldehyde, ketone, glacial acetic acid, triethyl phosphate, ethyl acetoacetate, cyclohexylamine. Miscible with other chlorinated hydrocarbon solvents, ethanol, and N,N-dimethylformamide.

II. Main Uses

Dichloromethane has the advantages of strong dissolving capacity and low toxicity. It is widely used in the production of safety film and polycarbonate. The remainder is used as a paint solvent, metal degreasing agent, aerosol propellant, polyurethane foaming agent, release agent, and paint remover.

Dichloromethane is a colorless liquid used as a reaction medium in the pharmaceutical industry for the preparation of ampicillin, hydroxybenzyl penicillin, cephalosporin, etc. It is also used as a solvent in film production, petroleum dewaxing solvent, aerosol propellant, organic synthesis extractant, foaming agent for the production of polyurethane and other foam plastics, and metal cleaning agent.