... calcium carbide route, with methanol as its solvent and azo-diisobutyronitrile as the initiator, through polymerization, ... can react with acid, ether and acetyl, and it can be esterified, etherified and actualized. In addition, it ... PVA of thorough alcoholysis is between 95c and 98c, and no boiling has to be dome. Heating ... . Put some dissolved PVA liquor in a beaker, and observe it in a bright place, if ...