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Sodium Tripolyphosphate (STPP)
Chemical Formula: Na5P3O10
Moecular Weight: 367.86
CAS NO: 7758-29-4
Structure:
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Specification:
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Indexes |
Industrial
Grade |
Food
Grade |
1 |
Assay
Na5P3O10 % ≥ |
94.0 |
94.0 |
2 |
P2 O 5 % ≥
|
57.0 |
57.0 |
3 |
Water Insoluble % ≤ |
0.10 |
0.05 |
4 |
Iron (Fe) % ≤ |
0.015 |
0.015 |
5 |
pH of 1% Solution |
9.0~10.0 |
9.5-10.0 |
6 |
Phase I |
10-30 |
10-30 |
7 |
Arsenic (As) % ≤ |
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0.0003 |
8 |
Fluoride (as F) % ≤ |
|
0.003 |
9 |
Heavy Metals (as Pb)
% ≤ |
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0.001 |
10 |
Whiteness % ≥ |
90 |
90 |
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,50kg /PP PE bag and 1000kg jumbo bag are available.
storage:It must be prevented from moisture and water. Don't pile up in the open air. |
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