Ammonium Phosphate - Wikipedia

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  • 1 Preparation of triammonium phosphate
  • 2 See also
  • 3 References
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Appearance move to sidebar hide From Wikipedia, the free encyclopedia Ammonium phosphate[1]
Ball-and-stick model of three ammonium cations and one phosphate anion
Ball-and-stick model of three ammonium cations and one phosphate anion
Names
IUPAC name ammonium phosphate
Other names triammonium phosphate
Identifiers
CAS Number
  • 10361-65-6  checkY
3D model (JSmol)
  • Interactive image
ChemSpider
  • 140090 checkY
ECHA InfoCard 100.030.709 Edit this at Wikidata
EC Number
  • 269-789-9
PubChem CID
  • 159282
UNII
  • 2ZJF06M0I9 ☒N
CompTox Dashboard (EPA)
  • DTXSID8052778 Edit this at Wikidata
InChI
  • InChI=1S/3H3N.H3O4P/c;;;1-5(2,3)4/h3*1H3;(H3,1,2,3,4) checkYKey: ZRIUUUJAJJNDSS-UHFFFAOYSA-N checkY
  • InChI=1/3H3N.H3O4P/c;;;1-5(2,3)4/h3*1H3;(H3,1,2,3,4)Key: ZRIUUUJAJJNDSS-UHFFFAOYAA
SMILES
  • [O-]P([O-])([O-])=O.[NH4+].[NH4+].[NH4+]
Properties
Chemical formula (NH4)3PO4
Molar mass 149.09 g/mol
Appearance White, tetrahedral crystals
Solubility in water 58.0 g/100 mL (25 °C)
Solubility Insoluble in acetone[2]
Hazards
GHS labelling:
Pictograms GHS07: Exclamation mark
Signal word Warning
Hazard statements H302, H319
Precautionary statements P264, P270, P280, P301+P312, P305+P351+P338, P330, P337+P313, P501
NFPA 704 (fire diamond)
NFPA 704 four-colored diamond
2 0 0
Thermochemistry
Std enthalpy offormation (ΔfH⦵298) −1671.9 kJ/mol
Related compounds
Other cations Trisodium phosphateTripotassium phosphate
Related compounds Diammonium phosphateMonoammonium phosphate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). ☒N verify (what is checkY☒N ?) Infobox references
Chemical compound

Ammonium phosphate is the inorganic compound with the formula (NH4)3PO4. It is the ammonium salt of orthophosphoric acid. A related double salt, (NH4)3PO4.(NH4)2HPO4 is also recognized but is impractical to use. Both triammonium salts evolve ammonia. In contrast to the unstable nature of the triammonium salts, the diammonium phosphate (NH4)2HPO4 and monoammonium salt (NH4)H2PO4 are stable materials that are commonly used as fertilizers to provide plants with fixed nitrogen and phosphorus.[3]

Ammonium phosphate is the main ingredient in pink fire retardant. [4]

Preparation of triammonium phosphate

[edit]

Triammonium phosphate can be prepared in the laboratory by treating 85% phosphoric acid with 30% ammonia solution:[citation needed]

H3PO4 + 3 NH3 → (NH4)3PO4

(NH4)3PO4 is a colorless, crystalline solid. The solid, which has the odor of ammonia, is readily soluble in water. The salt converts to diammonium hydrogen phosphate (NH4)2HPO4.

See also

[edit]
  • Ammonium polyphosphate
  • Monoammonium phosphate
  • Diammonium phosphate

References

[edit]
  1. ^ Lide, David R. (1998). Handbook of Chemistry and Physics (87 ed.). Boca Raton, Florida: CRC Press. pp. 4–42, 5–19. ISBN 978-0-8493-0594-8.
  2. ^ John Rumble (June 18, 2018). CRC Handbook of Chemistry and Physics (99th ed.). CRC Press. pp. 4–41. ISBN 978-1138561632.
  3. ^ Schrödter, Klaus; Bettermann, Gerhard; Staffel, Thomas; Wahl, Friedrich; Klein, Thomas; Hofmann, Thomas (2008). "Phosphoric Acid and Phosphates". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a19_465.pub3. ISBN 978-3-527-30673-2.
  4. ^ Press • •, Tammy Webber | The Associated (2025-01-14). "What to know about the pink flame retardants are being used for California fires". NBC Los Angeles. Retrieved 2025-01-15.
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Ammonium salts
Inorganic salts
monatomic anions
  • NH4F
  • (NH4)2S
  • NH4Cl
  • (NH4)2Se
  • NH4Br
  • NH4I
oxyanions
  • NH4NO2
  • NH4NO3
  • CaNH4PO4
  • (NH4)2CO3
  • (NH4)4UO2(CO3)3
  • (NH4)HCO3
  • NH4H2AsO4
  • NH4BrO3
  • NH4ClO
  • NH4OCN
  • NH4B5O8
  • (NH4)3PO4
  • NH4PH2O2
  • (NH4)2HPO4
  • (NH4)H2PO4
  • NH4IO4
  • (NH4PO4)n(OH)2
  • NH4NaHPO4
  • (NH4)2SO3
  • (NH4)2SO4
  • (NH4)Al(SO4)2·12H2O
  • (NH4)2Fe(SO4)2·6H2O
  • NH4Fe(SO4)2·12H2O
  • NH4SO3NH2
  • (NH4)HSO4
  • (NH4)2S2O8
  • (NH4)2S2O3
  • NH4ClO3
  • NH4ClO4
  • (NH4)2Mg(SO4)2
  • NH4VO3
  • Nd(NH4)2(NO3)5
  • (NH4)2CrO4
  • (NH4)2Cr2O7
  • NH4MnO4
  • (NH4)3AsO4
  • NH4BrO4
  • (NH4)2MoO4
  • (NH4)6Mo7O24
  • (NH4)3Mo12PO40
  • NH4IO3
  • (NH4)2Ce(NO3)6
  • (NH4)8Ce2(SO4)8·4H2O
  • (NH4)10H2W12O42·4H2O
  • NH4ReO4
  • (NH4)2SeO4
  • (NH4)2TeO4
other anions
  • NH4BF4
  • NH4N3
  • NH4CN
  • NH4[Au(CN)2]
  • (NH4)HF2
  • (NH4)2SeBr6
  • (NH4)3AlF6
  • NH4SbF6
  • NH4AsF6
  • (NH4)3CrF6
  • (NH4)3FeF6
  • (NH4)3GaF6
  • (NH4)2GeF6
  • (NH4)3InF6
  • NH4NbF6
  • (NH4)2PtF6
  • (NH4)2ReF6
  • (NH4)2SnF6
  • NH4TaF6
  • (NH4)2UF6
  • (NH4)3VF6
  • (NH4)SiF6
  • (NH4)HS
  • NH4SCN
  • (NH4)2ZnCl4
  • (NH4)2MoS4
  • NH4I3
  • (NH4)2PtBr6
  • (NH4)2SnBr6
  • (NH4)2TeCl6
  • (NH4)2IrCl6
  • (NH4)2OsCl6
  • (NH4)2PtCl6
  • (NH4)2ReCl6
  • (NH4)2PdCl6
  • (NH4)2PbCl6
  • (NH4)3RhCl6
  • (NH4)2SeCl6
  • (NH4)2SnCl6
  • (NH4)4[Fe(CN)6]
  • (NH4)3VS4
  • (NH4)2S5
  • (NH4)4[HgBr6]
  • (NH4)2[PtI6]
  • NH4AuCl4
  • (NH4)2PdCl4
  • (NH4)3AsS4
  • (NH4)2WS4
  • (NH4)2[PtCl4]
Organic salts
  • Aluminon
  • Ammonium acetate
  • Ammonium adipate
  • Ammonium alginate
  • Ammonium benzoate
  • Ammonium bituminosulfonate
  • Ammonium butyrate
  • Ammonium carbamate
  • Ammonium caprylate
  • Ammonium cinnamate
  • Ammonium citrate
  • Ammonium diethyl dithiophosphate
  • Ammonium ferric citrate
  • Ammonium formate
  • Ammonium fumarate
  • Ammonium glutamate
  • Ammonium heptadecanoate
  • Ammonium itaconate
  • Ammonium lactate
  • Ammonium lauryl sulfate
  • Ammonium laurate
  • Ammonium malate
  • Ammonium malonate
  • Ammonium mandelate
  • Ammonium myristate
  • Ammonium nicotinate
  • Ammonium nonanoate
  • Ammonium oleate
  • Ammonium oxalate
  • Ammonium picrate
  • Ammonium palmitate
  • Ammonium perfluorononanoate
  • Ammonium picolinate
  • Ammonium propionate
  • Ammonium salicylate
  • Ammonium stearate
  • Ammonium succinate
  • Ammonium tartrate
  • Ammonium thioglycolate
  • Ammonium valerate
  • Cupferron
  • Ferric ammonium oxalate
  • Murexide
  • v
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Phosphates
H3PO4[HPO4]2−[H2PO4]− He
Li3PO4 Be3(PO4)2 BPO4+BO3 C (NH4)3PO4(NH4)2HPO4NH4H2PO4-N O +F Ne
Na3PO4Na2HPO4NaH2PO4 Mg3(PO4)2 AlPO4 Si3(PO4)4 P +SO4-S Cl Ar
K3PO4K2HPO4KH2PO4 Ca3(PO4)2 ScPO4 Ti VPO4VOPO4 CrPO4 Mn3(PO4)2MnPO4 Fe3(PO4)2FePO4 Co3(PO4)2 Ni3(PO4)2 Cu3(PO4)2 Zn3(PO4)2 GaPO4 Ge As -Se Br Kr
Rb3PO4 Sr3(PO4)2 YPO4 Zr3(PO4)4 Nb Mo Tc Ru Rh Pd Ag3PO4 Cd3(PO4)2 InPO4 Sn SbPO4-SbO4 Te I Xe
Cs3PO4 Ba3(PO4)2 * LuPO4 Hf Ta W Re Os Ir Pt AuPO4 Hg Tl3PO4 Pb3(PO4)2 BiPO4 Po At Rn
Fr Ra ** Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
 
* LaPO4 CePO4 PrPO4 NdPO4 PmPO4 SmPO4 EuPO4 GdPO4 TbPO4 DyPO4 HoPO4 ErPO4 TmPO4 YbPO4
** AcPO4 Th3(PO4)4 Pa (UO2)3(PO4)2 (NpO2)3(PO4)2 PuPO4(PuO2)3(PO4)2HPuO2PO4 AmPO4 CmPO4 Bk Cf Es Fm Md No
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