Ammonium sulfate is abbreviated as ammonium sulfate, with molecular weight 132 and nitrogen content of 2 1.

Properties: Ammonium sulfate is a white orthogonal crystal, soluble in water, insoluble in alcohol, acetone and chlorine. Ammonium sulfate containing impurities is light brown or dark brown, and reacts with alkaline substances to release ammonia gas. Wet ammonium sulfate is corrosive to steel and water. The decomposition temperature of ammonium sulfate is 280 degrees Celsius, and the change of temperature has little effect on the solubility of ammonium sulfate in water, so it absorbs moisture relatively.

note:

1, the solution should be as pure as possible, and there should be no insoluble matter;

2. The pH value of the solution should be about 5 to 6, and the pH value can be adjusted by ammonia water and sulfuric acid;

3. The solution does not need to be evaporated to dryness, and the heating can be stopped when it is evaporated until a crystalline film appears.