Sodium Tripolyphosphate (STPP)
Product Description
Properties: White powder, surface density: 0.35-0.9g/cm3, melting point:622 degrees free soluble in water, aqueous solution appears acid. It is a kind of inorganic surface active agent.
Molecular formula: Na5P3O10
Molecular Weight: 367.86
CAS No.: 7758-29-4
Specifications:
1. Industrial grade
Main content, %; 94.0
P2O5% above 57.0
Water insoluble %; 0.1
Iron, as Fe %; 0.015
pH of 1% water solution 9.2-10.0
2. Food grade
Main content, %: 94.0
P2O5%; 57.0
Water insoluble %; 0.05
Iron, as Fe %; 0.01
pH of 1% water solution 9.5-10.0
Heavy metal, as Pb %; 0.001
Arsenic, as As, %; 0.0003
Fluoride, as F, %; 0.003
Chloride, as Cl %; 0.025
Application:Used as one of the main auxiliaries for synthetic 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.
Packing In 25Kg or 50 Kg or 1000 Kg net WPP/PE bags
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