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Ammonium Hydrogen Phosphate
Ammonium phosphate - Molecular Mass = 149.12g/mol. The normal ammonium phosphate, (NH4)3PO4, is obtained as a crystalline powder, on mixing concentrated solutions of ammonia and phosphoric acid, or on the addition of excess of ammonia to the acid phosphate (NH4)2HPO4. It is soluble in water, and the aqueous solution on boiling loses ammonia and the acid phosphate NH4H2PO4 is formed. Ammonium phosphate is used as an ingredient in some fertilizers as a high source of elemental nitrogen.
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