... 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 density: 0.35-0 ... softener or densifier in foodstuff industry.Specification In food industry, it is used as water conservative, ... kept away from moisture and hot. STPP Food grade