Ammonium sulfate (AMS) is an inorganic sulfate salt obtained by reacting one-part sulfuric acid with two parts of ammonia.

Ammonium sulfate is a white odorless
non-flammable, non-explosive, granular solid that dissolves in water.

AMS is widely used as a crop nutrient fertilizer that provides both nitrogen and sulfur needed for plant proteins.

In recent years, AMS has gained additional uses in industrial applications including municipal drinking water treatment products, as a solids precipitation agent in municipal sewerage treatment plants, herbicide adjuvants, fire retardants, animal feed and animal feed fermentation products, tanning agent for hides, food additives, cleaning products, and construction materials.