... 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 ... one of the main auxiliaries for synthetic detergent, synergist for soap; Water softener, tanning agent for leather making, auxiliary for dyeing; As an effective ...