1,STPP 2, high purity 94% 3, used as main auxiliary of synthetic wash 4, ... good quality at competitive price. STPP Sodium Tripolyphosphate high purity 94% white powderPacking:25kg pp bagSpecification: Na5P3O10,% ,Min.94P2O5,% ,Min ... , and dispersant of suspension such as paint, kaolin, magnesium oxide, calcium carbonate drilling mud, preservative agent for paper making, organic synthesis catalyzer ...