anhydrous ammonia

Anhydrous ammonia is pure ammonia that contains no water. Household ammonia, in contrast, is ammonia dissolved in water. Anhydrous ammonia is used industrially as a fertilizer, refrigerant, and antimicrobial agent.1

Ammonia (NH₃) itself is a colorless, pungent gas made of nitrogen and hydrogen. It's the simplest stable compound of these elements and a key material for producing many nitrogen-based compounds. The primary use of ammonia is as a fertilizer, applied directly to soil or in the form of ammonium salts like ammonium nitrate. It's also crucial in manufacturing explosives, synthetic fibers, and in various industrial processes like petroleum refining and rubber production. Ammonia's ability to absorb heat makes it valuable for refrigeration and air conditioning.2