1,Manufacturer of Sodium Tripolyphosphate (STPP) 2,Free sample 3,High quality and competitive price 4, ... Quickly delivery Product DescriptionProduct: Sodium Tripolyphosphate (STPP)CAS No.: 7758-29-4 Molecular Formula: Na5P3O10 Molecular weight ... solution 9.2-10.0 2. Food grade Main content, %: 94.0 P2O5%; 57.0 Water insoluble %; 0.05 Iron, as Fe %; 0.01 pH of 1 ...