Sodium tripolyph-osphate(STPP)

Used as main auxiliary of synthetic wash, soap synergistic agent, water softener, leather pre-tanning agent, dye auxiliary agent, and dispersant of suspension such as paint, kaolin, magnesium oxide, calcium carbonate drilling mud, preservative agent for paper making, organic synthesis catalyze, also used in epuration of petroleum product, gum latex storage, as dispersant, solvent in metal industry and pharmaceutical industry.