... .:9002-89-5 3.Formula:[C2H4O]n 4.Appearance:white powder Polyvinyl alcohol(PVA)1,other name: vinylalcohol polymer, poval2, CAS No.: ... polypropylene bags lined with a polyethylene film.The net weight of each bag is 25kg,50kg ..And it could be ... .our products cover nearly all range of chemials industry ,including:PVC, melamine, urea, ammonium chloride,polyvinyl alcohol, paraffin, sodium hydroxide, and so ...