Polyvinylpyrrolidone PVP K90 1 CASa: 9003-39-8 2 PH: 3-7 3 Content 99.9% 4 Packaging: 25kg / barrel PVP K90 Polyvinylpyrrolidone Specifications:pvpK90 pvpPVP K30,PVP K90,PVP K15 ,PVP K17; PVPPolyvinylPyrrolidonePVP K30PVP K90PVP K15PVP K17PVP Pharma grade (PVP K) specificationK-valuesolid,%PHNVP,%PVP K30 powder27-3395 min3-70.01maxPVP K17 powder15-1995min3-70.01maxPVP K90 Powder88-9895min5-90. ...