... . It is soluble in water,but insoluble in alcohol, acetone, ammonia. It will decompose when the temperature was to 155 °C ... . If it was exposed in air,it would gradually lose ammonia to be formed of ammonium dihydrogen phosphate. aqueous solution is ... alkaline. The reacting of DAP with ammonia gave ammonium phosphates . Uses: Fertilizer-grade is mainly used high ...