... No.:7783-20-2 homogeneous stable solid Ammonium sulfate, (4)24, is an inorganic with a ... % sulfur as . In fertilizer the purpose of the sulfate is to reduce the soil PH .It is used ... as an artificial for . In the soil the sulfate ion is released and forms bisulfate, lowering the balance ... of the (as do other sulfate compounds such as ), while contributing essential for plant ...