Ammonium Phosphate Formula

Ammonium Phosphate Formula

The Ammonium Phosphate Formula is a salt which is made out of two substances, which are mainly ammonium and phosphate. The Ammonium Phosphate Formula is extremely unstable as a compound, and it has a formula (NH4)3PO4. Since it is so unstable, it is very elusive, and it does not have much monetary value. It is also known as a “double salt”, (NH4)3PO4. (NH4)2HPO4 is present in the process, but it is also too unstable for any practical use that can be made of the compound. Moreover, both the triammonium salts can slowly evolve into ammonia. In respect of the fragile nature of the triammonium salts, the diammonium phosphate (NH4)2HPO4, and the monoammonium salt (NH4)H2PO4, are extremely stable materials that are usually useful in the form of fertilisers which are provided to plants with an exact amount of nitrogen and phosphorus.

Ammonium Phosphate Chemical Formula

The molecular formula for ammonium phosphate is (NH4)3PO4.

Ammonium Phosphate Structural Formula

(NH4)3PO4 is the molecular formula for ammonium phosphate. The information regarding the same can be found on the Extramarks website or mobile application


The production of the ammonium phosphate (NH4H2PO4) takes place with the help of the process of making the compound react to phosphoric acid (H3PO4) with the anhydrous ammonia (NH3):

NH3 + H3PO4 → NH4H2PO4

Ammoniated superphosphates are made with the help of the process of adding normal superphosphates or triple superphosphates to the mixture. However, it can be called the production of the liquid ammonium phosphate and ammoniated superphosphates in fertiliser mixing plants and for that, it is a whole separate process.


Ammonium Phosphate Formula is obtained naturally in the form of a crystalline powder which when mixed with concentrated solutions of ammonia and phosphoric acid or sometimes with the extra addition of a large amount of the ammonia to the acid phosphate  (NH4)2(HPO4). In a situation like this, the Ammonium Phosphate Formula is soluble when put inside the water, the aqueous solution loses ammonia on boiling and the formation of the acid phosphate takes place(NH4)(H2PO4).

Physical Properties

Ammonium Phosphate Formula has an odour of ammonia in it. It is white colour in appearance and it is available in the form of white colour tetrahedral crystals. The exact level of complexity of the ammonium phosphate is 46.5. Sometimes the Covalently-Bonded Unit is 3. The number of all the Hydrogen Bond donors in the ammonium sulphate is exactly 3. Ammonium Phosphate Formula is highly soluble once it is put inside the water (H2O). It has a pH of about 4 to 4.5.

Chemical Properties

Ammonium Phosphate Formula when made to undergo the process of the decomposition reaction is directly responsible for emitting very toxic fumes. Through this process, the formation of phosphoric acid and ammonia takes place.

(NH4)3PO4 → 3NH3 + H3PO4

The ammonium phosphate reacts with the lead nitrate, which results in forming of lead phosphate and ammonium nitrate.

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


The Ammonium Phosphate Formula is very popular and it is a broad generic name for a variety of fertiliser materials which contain both nitrogen and phosphate. Ammonium phosphates become increasingly important as a source of available P2O5. The P2O5 is somewhat higher in the ammonium phosphates than in the triple superphosphate.

The Ammonium Phosphate Formula is mainly useful as a solid fertiliser, but it can also be used in the solution. The Ammonium Phosphate Formula can be used as the components of intumescent paints and mastics, where they actively act as an acid catalyst. Ammonium Phosphate Formula are also used in paints, which are pentaerythritol as the carbonic components and melamine as the specific compounds.

Safety Hazards

Ammonium phosphate can easily cause eye irritation.  It can even cause skin irritation. It can even accuse nausea or vomiting,

Solved Example for You:

Students can find examples related to the Ammonium Phosphate Formula on the Extramarks website.

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