Ammonium phosphate is a white powder or granular substance (granular products have high particle compressive strength) with a density of 1.803 (19 ℃). The melting point is 190 ℃, easily soluble in water, slightly soluble in alcohol, insoluble in acetone. The solubility in 100g of water at 25 ℃ is 41.6g, with a heat generation of 121.42kJ/mol.