... I: 15-40% Heavy and Light STPP Approved by Unilever, Ceramics 10 years producing experie STPP Sodium TripolyphosphateNa5P3O10,% ,Min.94P2O5,% ,Min.57Insolubles, % Max ... widely used in gum synthesis, foodstuff industry, and poultry process. sodium tripolyphosphate STPP