What is Ammonium phosphate?

Ammonium phosphate is an stormy compound make of ammonium and also phosphate salt v the chemical formula (NH4)3PO4.

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Ammonium phosphate is made by mixing with each other ammonium phosphate and urea in a molten condition. Substantial heat is created which transform the ammonium phosphate sulphate to the molten state. It has a group of nitrogen phosphorus products mono ammonium phosphates and diammonium phosphates, mixtures of the two or combination with ammonium nitrate or ammonium sulfate.

Other names – triammonium phosphate, diazanium hydrogen phosphate

Table the Contents

Ammonium phosphate framework – (NH4)3PO4

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General properties of Ammonium phosphate – (NH4)3PO4

(NH4)3PO4Ammonium phosphate
Density1.619 g/cubic cm
Molecular Weight/ Molar Mass149.09 g/mol
Boiling Point130°C
Melting Point155 °C (311 °F; 428 K) decomposes
Chemical FormulaH9N2O4P

Physical nature of Ammonium phosphate – (NH4)3PO4

OdourAmmonia odour
AppearanceWhite, tetrahedral crystals
Complexity46.5
Covalently-Bonded Unit3
Hydrogen bond Donor3
SolubilityReadily dissolve in water
Solubility pH4 come 4.5

Chemical nature of Ammonium phosphate – (NH4)3PO4

Ammonium phosphate easily undergoes decomposition reaction emitting very toxic fumes. It develops phosphoric acid and also ammonia.

(NH4)3PO4 → 3NH3 + H3PO4

Ammonium phosphate reacts with lead nitrate developing lead phosphate and also ammonium nitrate.

4(NH4)3PO4 + 3Pb(NO3)4 → Pb3(PO4)4 + 12NH4NO3

Uses that Ammonium phosphate – (NH4)3PO4

Ammonium phosphate is a broad generic name for a variety of fertilizer materials containing both nitrogen and also phosphate.Ammonium phosphates are coming to be increasingly crucial as a resource of easily accessible P2O5. P2O5 is somewhat higher in ammonium phosphates than in triple superphosphate.Mainly supplied as a solid fertilizer yet can additionally be made use of in solution.Used as contents of intumescent paints and mastics where they duty as an mountain catalyst.Used in paints which pentaerythritol as the carbonific component and melamine together the particular compound.


Ammonium phosphate is a high source of elemental nitrogen offered as an ingredient in details fertilizers. This is likewise used in thermoplastic formulations as a fire retardant.


Ammonium phosphate add to nitrogen and phosphates come the lawns which lack the nutrients. Ammonium phosphate is a fast-release fertilizer that can be supplied for new grass planting, cleaning, monitoring, or lawn renovation.


Ammonia consists of one nitrogen and three hydrogens opposed to one nitrogen and four hydrogens formed by ammonium. Ammonia is a low, unionized foundation. In the other side, it is ionized come ammonium. Some significant distinctions between the two is the Ammonia offers off a heavy odour while Ammonium does no smell in ~ all.


Ammonium phosphate is an orthophosphoric mountain ammonium salt. Formula (NH4)3PO4 is a highly unstable compound. The is elusive, and also of little economic interest due to its uncertainty.

See more: Solved What Is The Formula For The Compound Nitrogen Monoxide? ?


It is dissolve in water, and ammonia loses and also the mountain phosphate (NH4)(H2PO4) is developed as the aqueous solution on the boil. Ammonium phosphate is a high resource of element nitrogen supplied as one ingredient in specific fertilizers. This is additionally used in thermoplastic formulations as a flame retardant.