... Appearance: White powder or granular;Specifications1,Manufacturer of Sodium Tripolyphosphate (STPP) 2,Free sample 3,High quality ... and competitive price 4,Quickly deliveryProduct DescriptionProduct: Sodium Tripolyphosphate (STPP)CAS No.: 7758-29-4 Molecular ... of suspension such as paint, kaolin, magnesium oxide, calcium carbonate drilling mud, preservative agent for paper making, organic ...