Ammonium phosphate

Ammonium phosphate
Ammonium phosphate[1]
CAS number 10361-65-6 YesY
ChemSpider 140090 YesY
Jmol-3D images Image 1
Molecular formula H12N3O4P
Molar mass 149.09 g mol−1
Solubility in water 58.0 g/100 mL (25°C)
Std enthalpy of
-1671.9 kJ/mol
Related compounds
Other anions Diammonium phosphate
Ammonium dihydrogen phosphate
Other cations Sodium phosphate
Potassium phosphate
 YesY phosphate (verify) (what is: YesY/N?)
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 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)2(HPO4). It is soluble in water, and the aqueous solution on boiling loses ammonia and the acid phosphate (NH4)(H2PO4) 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. It is also used in bread making to promote the growth of the yeast.[2]

See also


  1. ^ 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. 
  2. ^

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Look at other dictionaries:

  • ammonium phosphate — noun : a phosphate of ammonium made by reaction of ammonia and phosphoric acid: as a. : the white crystalline primary phosphate NH4H2PO4 or sometimes a commercial mixture of this with ammonium sulfate, used chiefly as a fertilizer and as a fire… …   Useful english dictionary

  • ammonium phosphate — noun Date: 1880 a phosphate of ammonium; especially diammonium phosphate …   New Collegiate Dictionary

  • ammonium phosphate — ammo′nium phos′phate n. chem. a phosphate of ammonium, esp. N2H9PO4, used as a fertilizer and fire retardant • Etymology: 1880–85 …   From formal English to slang

  • ammonium phosphate — Chem. 1. See monoammonium phosphate. 2. (loosely) diammonium phosphate. * * * …   Universalium

  • ammonium phosphate — [NF] the diammonium salt of phosphoric acid, (NH4)2HPO4, used as a buffering agent in pharmaceutical preparations. See also struvite …   Medical dictionary

  • diacid ammonium phosphate — amonio dihidrofosfatas statusas T sritis chemija formulė NH₄H₂PO₄ atitikmenys: angl. ammonium biphosphate; ammonium dihydrogen phosphate; ammonium dihydrophosphate; diacid ammonium phosphate rus. аммония дигидрофосфат; аммония первичный кислый… …   Chemijos terminų aiškinamasis žodynas

  • dibasic ammonium phosphate — noun see ammonium phosphate …   Useful english dictionary

  • monobasic ammonium phosphate — noun see ammonium phosphate …   Useful english dictionary

  • Ammonium dihydrogen phosphate — Ammonium dihydrogen phosphate[1] …   Wikipedia

  • Phosphate monoammonique — Général Nom IUPAC …   Wikipédia en Français

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