Name: sodium tripolyphosphate (STPP) CAS No.: 7758-29-4 EINECS No.: 231-838-7 Molecular Formular: Na5P3O10 Appearance: White powder or granular; Easily soluble in water; Packing: In 25kg/1000kg net each PP/PE bag Usage: Used in detergent, synergist for soap; water softener; tanning agent for leather making, auxiliary for dyeing; As an effective dispersion agent for suspension solutions of coatings, kaolin, magnesium oxide, calcium carbonate and drilling mud etc.; As an oil contamination resistance agent in paper production. In foodstuff industry it is used as quality improver in the process of canned food, fruit juice drinks, foodstuffs from milk or soybeans. It may tender the meat in canned ham and soften the skin of horse bean in canned horse bean. It may also serves as a softener or densifier in foodstuff industry. Specification: ITEM INDEX Tech. Grade Food Grade Na5P3O10 94%Min 95%Min P2O5 57%Max 57%Max Insolubles in water 0.15%Max 0.05%Max Fe 0.007%Max N Ph (1% solution) 9.2-10% 9.5-10% Heavy Metal (As Pb): N 0.001%Max Arsenic (As) N 0.0003%Max Fluoride(F) N 0.003%Max Whiteness 90%Min 90%Min Density (g/cm3) 0.35-0.9 0.35-0.9 I type content 10-30% 10-30%