It is mainly used for organic synthesis, solvent extraction of plant oil, extracting agent, cleaning agent, dissolvant, chemical reagent, paint thinner, the media of polymerization, and it also can be used in the production of some relative chemical fields, such as pyridaben production, polyethylene oxide, red pigmentum of pepper, high density polyethylene titanium magnesium chloride supported catalyst, catalytic agent DQ, catalytic agent N, stabilizing agent YH-1098 etc.