polyvinyl alcohol
Polyvinyl alcohol is an organic compound with a chemical formula of [C2H4O]n, and its appearance is white flake, flocculent or powdery solid, odorless. Soluble in water (above 95℃), slightly soluble in dimethyl sulfoxide, insoluble in gasoline, kerosene, vegetable oil, benzene, toluene, dichloroethane, carbon tetrachloride, acetone, ethyl acetate, methanol, ethylene dichloride Alcohol etc.