Sodium Tripolyphosphate (STPP) CAS NO. | 7758-29-4

  • CAS No.: 7758-29-4
  • Type.: Phosphates
  • Appearance: White powder
  • Molecular Formula: Na5O10P3
  • Shelf Life: 2 Years
  • Min Order Quantity: As requirements
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Item Standard Result
Content(Na5P3O10)%≥ 94.0 95.0
Phosphorus pentoxide %≥ 57.0 57.6
Water-insoluble %≤ 0.05 0.04
Iron(Fe) %≤ 0.01 0.007
PH value(1% water solution) 9.5-10.0 9.8
Heavy metal (Pb) %≤ 0.001 0.0006
Arsenic (As) %≤ 0.0003 0.0002
Fluoride (F) %≤ 0.003 0.003
White content %≥ 85.0 90.0
(1) STPP/Sodium Tripolyphosphate is used as one of the main auxiliaries for synthetic detergent, synergist for soap; water softener, tanning agent for leather making, auxiliary for dyeing;

(2) STPP/Sodium Tripolyphosphate can also used as an effective dispersion agent for suspensions of coatings, kaolin, magnesium oxide, calcium carbonate and drilling mud etc.;

(3) STPP/Sodium Tripolyphosphate as an oil contamination resistance agent in paper production.

(4) In foodstuff industry, STPP/Sodium Tripolyphosphate is used as quality improver in the process of canned food, fruit juice drinks, foodstuffs from milk or soybeans.

STPP/Sodium Tripolyphosphate may tender the meat in canned ham and soften the skin of horse bean in canned horse bean.

STPP/Sodium Tripolyphosphate may also serves as a softener or densifier in foodstuff industry.
 
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