Sodium tripolyphosphate (STPP, sometimes STP or sodium triphosphate or TPP ) with formula Na5P3O10, is a polyphosphate of sodium. It is the sodium salt of triphosphoric acid.
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.
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Name: |
Sodium Tripolyhosphate(STPP) |
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CAS No.: |
7758-29-4 |
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Chemical Formula: |
Na5P3O10 |
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Specification: |
GB/T9983-2004 |
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Packing: |
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Functional use: |
Auxiliaries for synthetic detergent ;water softener; tanning agent. |
Specifications
|
Items |
Specification(GB/T9983-2004) |
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CONTENT |
94% MIN. |
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P2O5 CONTENT |
57%MIN. |
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WHITENESS |
88%MIN. |
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INSOLUBLE MATTER |
0.1%MAX. |
|
FE |
70PPM MAX. |
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SIZE: RESIDUE ON 1.00 TEST SIEVE |
5.0%MAX. |
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LOSS ON IGNITION (500) |
1% MAX. |
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PH VALUE (1% SOLUTION) |
9.2-10.0 |
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BULK DENSITY (g/cm3) |
0.65-0.99 |
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PHASE |
10-30% |