ammonium phosphate

Ammonium phosphate[1]
IUPAC name	ammonium phosphate
Other names	triammonium phosphate
Identifiers
CAS number	10361-65-6 Y
SMILES	O=P([O-])([O-])[O-].[NH4+].[NH4+].[NH4+]
Properties
Molecular formula	H12N3O4P
Molar mass	149.09 g mol−1
Solubility in water	25.0 g/100 g
Thermochemistry
Std enthalpy of formation ΔfHo298	-1671.9 kJ/mol
Related compounds
Other anions	Diammonium hydrogen phosphate Ammonium dihydrogen phosphate
Other cations	Sodium phosphate Potassium phosphate
Y (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 phosphate is the salt of ammonia and phosphoric acid. It has the molecular formula (NH₄)₃PO₄ and consists of ammonium cations and phosphate anion. It is obtained as a crystalline powder upon mixing concentrated solutions of ammonia and phosphoric acid, or on the addition of excess of ammonia to the acid phosphate (NH₄)₂HPO₄. It is soluble in water, and the aqueous solution on boiling loses ammonia and the acid phosphate NH₄H₂PO₄ is formed.

Ammonium phosphate is used as an ingredient in some fertilizers as a high source of elemental nitrogen. It is also used as a flame retardant in thermoplastic compositions.^[2]

References

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