Disodium phosphate (DSP), or sodium hydrogen phosphate, or sodium phosphate dibasic, is the inorganic compound with the formula Na2HPO4. It is one of several sodium phosphates. The salt is known in anhydrous form as well as forms with 2, 7, 8, and 12 hydrates. All are water-soluble white powders; the anhydrous salt being hygroscopic.
|Molar Weight||141.96 g/mol (anhydrous) 177.99 g/mol (dihydrate) 268.07 g/mol (heptahydrate)|
|Melting Point||250 °C decomposes|
Synonyms: Dibasic Sodium Phosphate, Disodium Monohydrogen Phosphate, Disodium Phosphate, DSP, E 339, Neutral Sodium Phosphate, Phosphoric Acid Disodium Salt, Sodium Phosphate Dibasic
Chemical Formula: Na2HPO4
CAS Number: -