| Ammonium dihydrogen phosphate[1] | |
|---|---|
 |
|
| IUPAC name |
ammonium dihydrogen phosphate
|
| Other names | monoammonium phosphate |
| Identifiers | |
| CAS number | 7722-76-1  |
| SMILES |
O=P(O)(O)[O-].[NH4+]
|
| Properties | |
| Molecular formula | H6NO4P |
| Molar mass | 115.03 g mol−1 |
| Appearance | white tetragonal crystals |
| Density | 1.80 g/cm3 |
| Melting point |
190 °C, 463 K, 374 °F |
| Solubility in water | 40.4 g/100 mL |
| Thermochemistry | |
| Std enthalpy of formation ΔfH |
-1671.9 kJ/mol |
| Related compounds | |
| Other anions | Ammonium phosphate Diammonium hydrogen phosphate |
| Other cations | Sodium dihydrogen phosphate Potassium dihydrogen phosphate |
| (what is this?) (verify) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
|
| Infobox references | |
Ammonium dihydrogen phosphate, or monoammonium phosphate, NH4H2PO4, is formed when a solution of phosphoric acid is added to ammonia until the solution is distinctly acidic. It crystallizes in quadratic prisms. Monoammonium phosphate is often used in the blending of dry agricultural fertilizers. It supplies soil with the elements nitrogen and phosphorus in a form which is usable by plants. The compound is also a component of the ABC powder in some dry chemical fire extinguishers. This substance is also supplied in a jade green or aquamarine crystal growing box kit for kids.
References
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This article needs additional citations for verification. Please help improve this article by adding reliable references. Unsourced material may be challenged and removed. (July 2009) |
- ^ Lide, David R. (1998). Handbook of Chemistry and Physics (87 ed.). Boca Raton, FL: CRC Press. pp. 4–40. ISBN 0849305942.
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