STPP, Sodium Tripolyphosphate good quality, widely used in detergent, good performence STPP Sodium TripolyphosphateNa5P3O10,% ,Min.94P2O5,% ,Min.57Insolubles, % Max.0.05PH Value(1% ... used in gum synthesis, foodstuff industry, and poultry process. STPP sodium tripolyphosphate