Tetrasodium pyrophosphate
Compounds
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Tetrasodium pyrophosphate, also called sodium pyrophosphate, tetrasodium phosphate or TSPP, is an inorganic compound with the formula Na₄P₂O₇. As a salt, it is a white, water-soluble solid. It is composed of pyrophosphate anion and sodium ions.... Wikipedia
Formula: Na4P2O7
Molar mass: 265.9 g/mol
Melting point: 988 °C (1,810 °F; 1,261 K) (anhydrous); 79.5 °C (decahydrate)
Boiling point: 199.4°F (93°C)
3D model (JSmol): Interactive image
Crystal structure: monoclinic (decahydrate)