Product Description

Other name:STPP

CAS No.: 13573-18-7

EINECS No.:231-838-7

Molecular Formula: Na5P3O10

Place of Origin:Henan, China (Mainland)


Grade:Tech grade/food grade

Appearance :White powder or granular


sodium triphosphate is an inorganic compound with formula Na5P3O10. STPP, stpp/sodium tripolyphosphate 94% tech grade as soft water agentceramic is the sodium salt of the polyphosphate penta-anion, which is the conjugate base of triphosphoric acid. Sodium tripolyphosphate is produced by heating a stoichiometric mixture of disodium phosphate, Na2HPO4, and monosodium phosphate, NaH2PO4, under carefully controlled conditions.

HS Code:28353100

Sodium triphosphate 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.

Tech. Grade Food Grade
Na5P3O10 (%): 94Min 94
P2O5 (%): 57Min 57
Insolubles in water (%): 0.15Max 0.05Max
Fe (%): 0.007Max N
Ph (1% solution): 9.2-10 9.5-10
Heavy Metal (As Pb) (%): N 0.01Max
Arsenic (As) (%): N 0.0003Max
Fluoride(F) (%): N 0.003Max
Whiteness(%): 90Min 90Min
Density (g/cm3) 0.35-0.9 0.35-0.9
Itype content (%) 10-30 10-30



Cautions during transportion:

Store in tight containers in a dry and ventilative warehouse. Keep away from moisture,hot and poisonous substances.