| Customization: | Available |
|---|---|
| CAS No.: | 7758-29-4 |
| Formula: | Na5p3o10 |
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Product Description
Chemical name: sodium tripolyphosphate(STPP)
Molecular formula: Na5P3O10
Molecular weight: 367.86
CAS NO: 7758-29-4
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 charged chelating agent, TPP5- binds to dications tightly and prevents them from interfering with the sulfonate detergent.
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 United States Food and Drug Administration lists STPP as "generally recognized as safe.
TECHNICAL INDEX
| Item | Index |
| Sodium Tripolyphosphate (Na5P3O10),w/% ≥ | 94.0 |
| Total phosphate (P2O5),w/% | 56.0~58.0 |
| Water insoluble matter,w/% ≤ | 0.1 |
| Fluoride (Calculated by F)/ (mg/kg) ≤ | 50 |
| Arsenic (As)/ (mg/kg) ≤ | 3 |
| Heavy metal (Calculated by Pb)/ (mg/kg) ≤ | 10 |
| Lead (Pb)/ (mg/kg) ≤ | 4 |
| Test | Result |
| Appearance | White Granular or Powder |
| Na5P3O10 | 95% min |
| P2O5 | 57.0% min |
| Water Insoluble | 0.05% max |
| pH Value | 9.5-10.0 |
| Fluoride | 10 mg/kg max |
| As | 1 mg/kg max |
| Lead | 1 mg/kg max |
| Cd | 1 mg/kg max |
| Hg | 1 mg/kg max |
| AI | 200 mg/kg max |
| Heavy Metals (As Pb) | 10 mg/kg max |
| Bulk Density | 0.70 g/ml-0.80 g/ml |
| Whiteness | 85% min |
| CI | By testing% |
| SO4 | By testing% |
| Loss on Ignition (105°C,1hour) | 0.5% max |
| Through 80mesh | 25% min |
| Through 100mesh | 45% min |
Package details:
No.1 Aluminum vacuum packaging, plastic lining .25 / KG, can be packed according to customer requirements
No.2 Tray 1TON, 40 bags, 1FCL 20TON
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