Runze told you that due to dichloromethane has the advantages of strong solubility and low toxicity, a large number of safety film used in the manufacture of polycarbonate, the rest used as paint solvent, metal degreaser, gas smoke spray agent, polyurethane foaming agent, release agent, paint remover.

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

Dichloromethane is mainly used in film production and medicine in China. Among them, the consumption for film production accounts for 50% of the total consumption, the medical face account for 20% of the total consumption, the cleaning agent and chemical industry accounts for 20% of the total consumption, and other aspects account for 10%. Dichloromethane is also used in industrial refrigeration systems as a secondary refrigerant, but the harm is very great, and open fire or hot object contact can produce highly toxic phosgene. In the case of moist air, it can hydrolyze into a trace of hydrogen chloride, and light can also promote the hydrolysis and increase the corrosion of metal.

Used for grain fumigation and refrigeration of low pressure chillers and air conditioning units. It is used as an auxiliary foaming agent in the production of polyether urane foam and as a foaming agent for extruding polysulfone foam.

Methylene chloride is also used to make decaffeinated coffee. Coffee is first steamed so that the caffeine dissolves and floats to the surface, and then dichloromethane is used to remove the caffeine