Customization: | Available |
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CAS No.: | 7758-29-4 |
Formula: | Na2h2p2o4 |
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Product Name
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Sodium Tripolyphosphate(STPP)
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Appearance
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White powder
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Water Soluble
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Easily soluble in water, the aqueous solution is alkaline
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Density
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2.52g/cm3
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Melting Point
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622ºC
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Molecular Weight
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367.86
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Usage
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Main auxiliaries, water softeners, leather pretanning agents, dyeing auxiliaries, dispersants and food additives, etc.
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Item | Standard |
Total phosphate as P2O5% | ≥95% |
The activity of phosphate as P2O5%≥ | ≥57% |
PH (1% solution) | 9.2-10.0 |
Solubility | Conformity |
Iron (Fe) % |
≤0.007 |
Water Insoluble % | ≤0.10 |
Particle size 1.00 mm test sieve sieve residue % |
≤5.0 |
Whiteness% | ≥90 |
Storage | in the shade |
Packing | 25kg/bag |
1.Used as one of the main auxiliaries for synthetic detergent, synergist for soap; water softener, tanning agent for leather making, auxiliary for dyeing;
2. As an effective dispersion agent for suspensions of coatings, kaolin, magnesium oxide, calcium carbonate and drilling mud etc.;
3. As an oil contamination resistance agent in paper production.
4.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.