Ammonium phosphate

• Tert- ammonium phosphate
• Triammonium
• Triammoniumorthophosphat

White powder

Fixed

1.61 g · cm -3

Well in water (580 g · l-1 at 20 ° C)

Attention

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Ammonium phosphate (specifically, triammonium phosphate ) is an ammonium salt of phosphoric acid. It is readily soluble in water as the trihydrate crystals.

Besides triammonium even mono- ammonium phosphate exist ( NH4) H2PO4, di- ammonium phosphate ( NH4) 2HPO4 and ammonium polyphosphates [ NH4PO3 ] n

Representation

Ammonium phosphate, can be represented by reaction of diammonium hydrogen phosphate with gaseous ammonia.

Also possible is the view through the neutralization of ammonia with phosphoric acid:

Properties

Ammonium phosphate is unstable in the solid state. It decays by emission of ammonia. The trihydrate forms crystals with the space group P21 / c and is therefore often used in crystal teaching boxes for children