... water = 1) : 1.77USE 1 .Ammonium sulfate mainly used as fertilizer, applicable to all kinds of soil and crop. 2 .Also ... agent and except agent for solution evaporation and concentration purification, and filtration, crystallization, centrifugal separation, cooling, drying system. Used as food ... separation and purification product of a protein, etc. Ammonium sulfate for fertilizer/CHEMICAL POWDER