... 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), ... the molecular weight is 44n. The molecular formula of PVA 17-88 is (C2 H4 O)n-(C2 H6O)m, ... be dome. Heating to 60c may do to PVA 17-88.4. Methods to distinguish whether PVA is completely ... 17-99L99.522312.17.00.890.01899L99.232~402.17.00.820-99L99.246502.17.00.822-99L99.251562.17.00.82499L≥99.2>562.17 ...