1,Sodium Tripolyphosphate (STPP) 2,Free sample 3,High quality and competitive price 4,Quickly delivery 1.STPP, Sodium Tripolyphosphate 2.good quality, widely ... used in detergent, good performence 3.STPP Sodium TripolyphosphatePropertiesWhite powder, surface ... clean warehouse;kept away from moisture and hot. STPP Food grade