Polyvinyl alcohol is an organic compound in white flake, flocculent or powdered solid condition with odorless smell. Polyvinyl alcohol is soluble in water, while insoluble in gasoline, kerosene, vegetable oil, benzene, toluene, dichloroethane, carbon tetrachloride, acetone, ethyl acetate, methanol, ethylene glycol, etc. Moreover, polyvinyl alcohol is slightly soluble in dimethyl sulfoxide. It is an important chemical raw material, used in the manufacture of polyvinyl acetal, gasoline resistant pipeline and vinylon synthetic fiber, fabric treatment agent, emulsifier, paper coating, adhesives, glue, etc.