|Jmol-3D images||Image 1|
|Molar mass||149.09 g mol−1|
|Appearance||White, tetrahedral crystals|
|Solubility in water||58.0 g/100 mL (25 °C)|
Std enthalpy of
|Other cations||Trisodium phosphate
|Related compounds||Diammonium phosphate
|Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)|
|(what is: / ?)|
Ammonium phosphate is the salt of ammonium and phosphate. It is a highly unstable compound with the formula (NH4)3PO4. Because of its instability, it is elusive and of no commercial value. In addition to (NH4)3PO4, a related double salt (NH4)3PO4.(NH4)2HPO4 is also recognized. It too is unstable. The instability of these salts results of their facile decomposition with evolution of ammonia:
- (NH4)3PO4 → H(NH4)2PO4 + NH3
In contrast to the fragile nature of the triammonium salts, diammonium phosphate (H(NH4)2PO4) is a valuable material, mainly used as a fertilizer.
- Lide, David R. (1998). Handbook of Chemistry and Physics (87 ed.). Boca Raton, FL: CRC Press. pp. 4–42, 5–19. ISBN 0-8493-0594-2.
- Klaus Schrödter, Gerhard Bettermann, Thomas Staffel, Friedrich Wahl, Thomas Klein, Thomas Hofmann "Phosphoric Acid and Phosphates" in Ullmann’s Encyclopedia of Industrial Chemistry 2008, Wiley-VCH, Weinheim. doi:10.1002/14356007.a19_465.pub3
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