ammonium sulfate

ammonium sulfate, chemical compound, (NH4)2SO4, a colorless-to-gray, rhombohedral crystalline substance that occurs in nature as the mineral mascagnite. It is soluble in water and insoluble in alcohol or liquid ammonia. It is prepared commercially by passing ammonia, obtained from destructive distillation of coal, into sulfuric acid and is used as a fertilizer, in preparing other ammonium compounds, and for fireproofing.

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

More on ammonium sulfate from Fact Monster:

See more Encyclopedia articles on: Compounds and Elements