STPP

STPP Specification of Sodium Tripolyphosphate(STPP) : Indexes Industrial Grade Food Grade Na5P3O10 94.0%Min 94.0%Min P2 O 5 57.0%Min 57.0%Min Water Insoluble Matter 0.15%Max 0.04%Max Iron(Fe) 0.015%Max 0.006%Max PH value (1% water solution) 9.2-10.0 9.5-10.0 Heavy Metal (as Pb) 0.001%Max Arsenic (As) 0.0003%Max Fluoride (F) 0.003%Max Whiteness 92%Min 92%Min Ignition loss 1.0 / density (g/cm3) 0.35-0.9 0.35-0.9 Phase I 10-30 10-30 Chemical formula:Na5P3O10 Molecular weight:367.86 Properties:White powder, surface density: 0.35-0.9g/cm3, melting point:622, free soluble in water, aqueous solution appears acid. It is a kind of inorganic surface active agent. 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 suspensions 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 :25kg /PP bag ,22MT /20'FCL