... price. STPP Sodium Tripolyphosphate high purity 94% white powderPacking:25kg pp bagSpecification: Na5P3O10,% ,Min.94P2O5,% ,Min.57Insolubles, % Max.0.05PH ... %, Max.0.4Bulk density, g/l650-990White degree %,Min.93Phase I10-30Usage: Used as main auxiliary of synthetic wash ... of suspension such as paint, kaolin, magnesium oxide, calcium carbonate drilling mud, preservative agent for paper making, organic ...