... quality at competitive price. STPP Sodium Tripolyphosphate high purity 94% white powderPacking:25kg pp bagSpecification: Na5P3O10,% ,Min.94P2O5,% ,Min.57Insolubles, % Max.0. ... 990White degree %,Min.93Phase I10-30Usage: Used as main auxiliary of synthetic wash, soap synergistic agent, water softener, leather ... foodstuff industry, and poultry process. competitive price sodium tripolyphosphate STPP 94%