Chemical Product Library / Reference
Sodium Acid Pyrophosphate
Chemical identity, technical indicators, performance and application reference. Confirm specifications and regulatory suitability against supplier documentation.
Chemical identity
| English name | Sodium Acid Pyrophosphate |
|---|---|
| English synonyms | SAPP;Sodium acid pyrophosphate;Disodium dihydrogen pyrophosphate |
| Chinese name | 酸式焦磷酸钠 |
| Chinese synonyms | SAPP;焦磷酸二氢二钠;酸式焦磷酸钠 |
| Chemical category | Food Acids & Regulators |
| CAS No. | 7758-16-9 |
| EINECS No. | 231-835-0 |
| Molecular formula | Na2H2P2O7 |
| Molecular weight | 221.94 |
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) 3.5–4.5; heavy metals (as Pb) ≤5 ppm
Performance characteristics
White powder, soluble in water, acidic pH, leavening acid properties
Application scenarios
Food leavening acid (baking powder), water treatment, metal cleaning, buffer