1.Used in the manufacture of safety film, polycarbonate, and the rest used for coating solvent, metal degreasing agent, smoke gas injection agent, polyurethane foaming agent, release agent, paint remover.

2.As reaction medium in the pharmaceutical industry,it is used in the preparation of ampicillin, hydroxy benzyl penicillin and cephalothin, etc.

3.Used for fumigation of grain and low-pressure freezer refrigeration and air conditioning equipment. In the production of polyether urethane foam,it is used as the auxiliary blowing agent, and used as blowing agent for extrusion type polysulfone foam.