Chemical Product Library / Reference
Sodium tripolyphosphate
Chemical identity, technical indicators, performance and application reference. Confirm specifications and regulatory suitability against supplier documentation.
Chemical identity
| English name | Sodium tripolyphosphate |
|---|---|
| English synonyms | STPP;Sodium tripolyphosphate;Pentasodium triphosphate |
| Chinese name | 三聚磷酸钠 |
| Chinese synonyms | STPP;三聚磷酸钠;磷酸五钠 |
| Chemical category | Food Acids & Regulators |
| CAS No. | 7758-29-4 |
| EINECS No. | 231-838-7 |
| Molecular formula | Na5P3O10 |
| Molecular weight | 367.86 |
PubChem structure images are reference depictions, not proof of composition, purity, grade, or regulatory status. Mixtures and polymers may not have a single representative structure.
Technical indicators
Assay ≥95.0%; water-insoluble matter ≤0.1%; pH (1% aqueous solution) 9.0–10.0; iron ≤0.01%
Performance characteristics
White powder or granules, soluble in water, excellent chelating, dispersing and buffering properties
Application scenarios
Food quality improver, detergent builder, water treatment, ceramic industry, textile auxiliary