STPP, Sodium Tripolyphosphate Used as main auxiliary of synthetic wash, soap synergistic agent, water softener, etc. Specification:NA5P3O10P2O5INSOLUBLE ... synthetic wash, soap synergistic agent, water softener, leather pre-tanning agent, dye auxiliary agent, and dispersant of ... magnesium oxide, calcium carbonate drilling mud, preservative agent for paper making, organic synthesis catalyzer, and ...