High Purity Methylene Chloride is a colorless liquid that is used as a reaction medium in the pharmaceutical industry for the preparation of ampicillin, oxypicillin and cephalosporin. It is also used as petroleum dewaxing solvent, aerosol propellant, organic synthesis extractant, foaming agent and metal cleaning agent for the production of foamed plastics such as polyurethane.

High Purity Methylene Chloride has the advantages of strong dissolving ability and low toxicity. It is widely used in the manufacture of safety film films, polycarbonate, and the rest are used as paint solvents, metal degreasers, aerosol propellants, polyurethane foaming agents, mold release agents, paint remover. High Purity Methylene Chloride is also used as a refrigerant in industrial refrigeration systems, but it is very harmful and can produce highly toxic phosgene when it comes into contact with open flames or hot objects. In case of humid air, it can be hydrolyzed to generate a small amount of hydrogen chloride, and light can also promote hydrolysis and increase the corrosiveness to metals.

It can also be used for grain fumigation and refrigeration of low-pressure freezers and air-conditioning units. It is used as an auxiliary blowing agent in the production of polyether urethane foam and as a blowing agent for extruded polysulfone foam. High Purity Methylene Chloride is also the substance used to make decaffeinated coffee. The coffee is first boiled to dissolve the caffeine and float to the surface, and then methylene chloride is used to remove the caffeine.