STPP 94%Min; P2O5:57%Min; Phase I: 15-40% Heavy and Light STPP Approved by Unilever, Ceramics 10 years producing experie STPP Sodium TripolyphosphateNa5P3O10,% ,Min.94P2O5,% ,Min. ... (as SO4), %, Max.0.4Bulk density, g/l650-990White degree %,Min.93Phase I10-30Used as main auxiliary of synthetic wash, soap ... in gum synthesis, foodstuff industry, and poultry process. sodium tripolyphosphate STPP