| Customization: | Available |
|---|---|
| CAS No.: | 7758-29-4 |
| Formula: | Na5p3o10 |
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Introduction (Sodium Tripolyphosphate CAS No.:7758-29-4 )
Sodium Tripolyphosphate has two crystalline forms, namely phase I (high temperature phase) and phase II (low temperature phase). The chemical properties of the two phases are the same, and the difference between them lies in the thermostability, hygroscopicity, solubility and hydration heat when dissolving .
1. Name: Sodium tripolyphosphate
2. Molecular formula: Na5P3O10
3.CAS No.:7758-29-4
4. Molecular weight:367.86
5. Solubility:free soluble in water,aqueous solution appears acid.
6. Appearance: White powder
| TESTS | SPECIFICATIONS | RESULTS |
| Main Content % | ≥94% | 94.7% |
| P2O5 | ≥56% | 56.2% |
| WATER INSOLUBLE | ≤0.15% | 0.05% |
| IRON (FE) | ≤0.015% | 0.014 |
| PH (1% SOLUTION) | 9.2-10.0 | 9.4 |
| WHITENESS | ≥85% | 85.7% |
| BULK DENSITY (G/CM3) | ≥0.80% | 0.82 |
| FINESS: PASSING THROUGH 35MESH | ≥90% | 97.0% |
| FINESS: PASSING THROUGH 100MESH | ≥90% | 93.0% |
| APPEARANCE | WHITE POWDR | PASS |
| CONSEQUENCE: THE GOODS COMPLY WITH THE AGREED SPECIFICATION | ||
1.In detergents
The majority of STPP is consumed as a component of commercial detergents.It serves as a "builder," industrial jargon for a water softener. In hard water (water that contains high concentrations of Mg2+ and Ca2+), detergents are deactivated. Being a highly chargedchelating agent, TPP5- binds to dications tightly and prevents them from interfering with the sulfonate detergent.
2.Food Applications
STPP is a preservative for seafood, meats, poultry, and animal feeds.It is common in food production as E number E451. In foods, STPP is used as an emulsifier and to retain moisture. Many governments regulate the quantities allowed in foods, as it can substantially increase the sale weight of seafood in particular. The UnitedStates Food and Drug Administration lists STPP as "generally recognized as safe.".
3.Other Uses
Other uses (hundreds of thousands of tons/year) include "ceramics, leather tanning(as masking agent and synthetic tanning agent - SYNTAN), anticaking, setting retarders, flame retardants, paper, anticorrosion pigments, textiles, rubber manufacture, fermentation, antifreeze.
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