We offer our clients Sodium Tripolyphosphate Powder that is odorless and utilized as a preservative. This water soluble chemical is also used in detergents and soaps to strengthen the cleaning action. We can provide Sodium Tripolyphosphate Powder in medium as well as bulk quantities at reasonable prices.
Sodium Tripolyphosphate (also known as STP, STPP or sodium triphosphate) holds the formula Na5P3O10 and is an organic compound within a variety of domestic and industrial products, especially detergents.
Sodium Tripolyphosphate has a variety of uses within varying industries as follows:
- In detergents – The majority of STPP is consumed as a component of commercial detergents.
- Food applications – preservative for seafood, meats, poultry, and animal feeds – It is common in food production as E number E451.
Other uses include:
- Leather tanning
- Ceramics
- Anticaking
- Setting retarders
- Flame retardant
- Paper
- Anticorrosion
- Pigments
- Textiles
- Rubber manufacture
- Fermentation
- Antifreeze
| Criteria | Specifications |
|---|---|
| Appearance | Free flowing white powder without any visible contamination |
| Odour | The material should have no noticeable malodour |
| P2O5 - content as is | 56% Min |
| STPP - content as is | 94% Min |
| Other Phosphates | 6% Max |
| Temperature Rise Test (TRT) | 10-14°C |
| Phase I Content | 16-32% |
| Volatile Matter (loss at 135°C - 4h) | 0.5-1% |
| Insoluble matter in water | 0.1% Max |
| Sodium Sulphate Content | 1.5% Max |
| Sodium Chloride Content | 0.5% Max |
| Fluoride Content | 0.3% Max |
| Colour values: L a b |
95 Min -2.5 - 2.5 0 - 5 |
| Bulk Density | 700 - 1000 g/l |
| R.O.H: After 1mn After 5 mn |
81-88°C 85-92°C |
| Particle Size: >1000 microns >500 microns >150 microns >60 microns |
0.2% Max 2% Max 15% Max 50% Max |
| pH (1% solution) | 9.4 - 10.2 |
| Trace Metals: Cr Co Ni Fe Mg + Ca |
5 ppm Max 5 ppm Max 5 ppm Max 100 ppm Max 150 ppm Max |
