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{{Chembox| Verifiedfields = changed| Watchedfields = changed| verifiedrevid = 428203184| ImageFile = Ammonium phosphate.png| ImageFile1 = Triammonium-phosphate-3D-balls.png| ImageSize1 = 240px| ImageName1 = Ball-and-stick model of three ammonium cations and one phosphate anion| Reference = BOOK, Lide, David R., 1998, Handbook of Chemistry and Physics

volume =, Boca Raton, Florida, CRC Press

pages = 4–42, 5–19, | IUPACName = ammonium phosphate| OtherNames = triammonium phosphate|Section1={{Chembox Identifiers

correct|chemspider}}| ChemSpiderID = 140090| InChI = 1/3H3N.H3O4P/c;;;1-5(2,3)4/h3*1H3;(H3,1,2,3,4)| InChIKey = ZRIUUUJAJJNDSS-UHFFFAOYAA

correct|chemspider}}| StdInChI = 1S/3H3N.H3O4P/c;;;1-5(2,3)4/h3*1H3;(H3,1,2,3,4)

correct|chemspider}}| StdInChIKey = ZRIUUUJAJJNDSS-UHFFFAOYSA-N

correct|CAS}}| CASNo = 10361-65-6| EC_number = 269-789-9

changed|FDA}}| UNII = 2ZJF06M0I9| PubChem = 159282| SMILES = [O-]P([O-])([O-])=O.[NH4+].[NH4+].[NH4+]}}|Section2={{Chembox Properties| Formula = (NH4)3PO4| Appearance = White, tetrahedral crystals| Density =| MeltingPt =| BoilingPt =| Solubility = 58.0 g/100 mL (25 Â°C)

acetoneJOHN RUMBLE

DATE=JUNE 18, 2018

ISBN=978-1138561632

EDITION=99TH, English, | MolarMass=149.09 g/mol}}|Section3={{Chembox Hazards| GHSPictograms = {{GHS07}}| GHSSignalWord = Warning

302|319}}

264

280

305+351+338

337+313|501}}| NFPA-H = 2| NFPA-F = 0| NFPA-R = 0| MainHazards =| FlashPt =| AutoignitionPt = }}|Section4={{Chembox Thermochemistry| DeltaHf = −1671.9 kJ/mol| DeltaHc =| Entropy =| HeatCapacity = }}|Section8={hide}Chembox Related| OtherCations = Trisodium phosphateTripotassium phosphate| OtherCompounds = Diammonium phosphateMonoammonium phosphate {edih} }}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.{{Ullmann|first1=Klaus|last1=Schrödter|first2=Gerhard|last2=Bettermann|first3=Thomas |last3=Staffel|first4=Friedrich|last4=Wahl|first5=Thomas|last5=Klein||first6=Thomas|last6=Hofmann|title=Phosphoric Acid and Phosphates|year=2008|doi=10.1002/14356007.a19_465.pub3}} Preparation of triammonium phosphate Triammonium phosphate can be prepared in the laboratory by treating 85% phosphoric acid with 30% ammonia solution:{{cn|date=April 2019}} 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 Ammonium polyphosphate Monoammonium phosphate Diammonium phosphate References {{Reflist}}{{Ammonium salts}}{{Phosphates}}{{inorganic-compound-stub}}