| Melting Point | 988°C |
| Density | 2.534 g/mL |
| Color | White |
| Linear Formula | Na4P2O7 |
| Formula Weight | 265.9 |
| Physical Form | Granular |
| Chemical Name or Material | Sodium pyrophosphate, Anhydrous |
| Grade | Technical |
| Merck Index | 14,9240 |
| Solubility Information | Soluble in water,with slow hydrolysis to sodium orthophosphateSoluble in water; Insoluble in ethyl alcohol. |
| Sensitivity | Hygroscopic |
| 24403 |
Synonym : tetrasodium pyrophosphate, sodium pyrophosphate, tspp, phosphotex, tetrasodium diphosphate, diphosphoric acid, tetrasodium salt, sodium diphosphate, victor tspp, natrium pyrophosphat, caswell no. 847
