... Polyvinyl Alcohol (PVA) of our company are the following series of 17-99F(L), 17-99F(H), 17-99 (L), 17-99(H), ... 18-99(L), 18-99(H), 19-99(L), 22-99(L), 19-88, and the like. Special PVA ... the molecular weight is 44n. The molecular formula of PVA 17-88 is (C2 H4 O)n-(C2 H6O)m, of ... dome. Heating to 60c may do to PVA 17-88.4. Methods to distinguish whether PVA is completely dissolved:a. Base on ...