| Chemical Name: | Sodium Tripolyphosphate |
| CAS Number: | 7758-29-4 |
| Molecular Formula: | Na5P3O10 |
| EINECS: | 231-838-7 |
| Appearance: | White granular or powder |
| Density: | 0.35–0.90 g/cm³ |
| Solubility: | Soluble in water; aqueous solution is alkaline |
Description
Sodium Tripolyphosphate (STPP) is an industrial phosphate supplied as white granules or powder. This page covers Industrial Grade I material for detergent building, water softening, dispersion and selected industrial formulations.
Brochure reference: GB/T 9983-2004, Industrial Grade I. Confirm the currently applicable specification and batch requirements before ordering.
| Item | Industrial Grade I |
|---|---|
| STPP (Na5P3O10) | ≥94% |
| Phosphorus pentoxide (P2O5) | ≥56.5% |
| Water insoluble | ≤0.10% |
| Iron (Fe) | ≤0.007% |
| Whiteness | ≥90% |
| pH (10 g/L solution) | 9.2–10.0 |
| Particle size | ≥95% through 1.00 mm mesh sieve |
Builder and synergist in synthetic detergent and soap formulations
Water softening, buffering and dispersion in industrial cleaning systems
Dispersant for industrial suspensions, including paint, kaolin and mineral formulations
Selected textile, leather, drilling-mud and paper-process applications
Application performance depends on formulation, dosage and process conditions. Confirm suitability through testing before production use. This industrial-grade page does not claim food-grade compliance.
25 kg or 50 kg bags with an inner polyethylene-film liner and outer woven bag
Product shelf life: 2 years under the stated storage conditions
Protect from rain and moisture, keep the package undamaged, and store in a dry, ventilated warehouse. For a current TDS, SDS or batch COA, contact the Tairan sales team.
