... and competitive price 4,Quickly delivery Product DescriptionProduct: Sodium Tripolyphosphate (STPP)CAS No.: 7758-29-4 Molecular Formula: Na5P3O10 ... process.3, Specifications: 1. Industrial grade Main content, %; 94.0 P2O5%≥ 57.0 Water insoluble %; 0.1 Iron, ... 2-10.0 2. Food grade Main content, %: 94.0 P2O5%; 57.0 Water insoluble %; 0.05 ... in the open air. 2011Hot sale Sodium Tripolyphosphate(94.0% min)