Anhydrous ammonia is a chemical compound made up of one nitrogen atom and three hydrogen atoms (NH3). This colorless gas has a strong, pungent odor and dissolves readily in water. It plays a vital role in various industries, particularly in agriculture, where it's a key ingredient in the production of fertilizers, explosives, plastics, and pharmaceuticals. Anhydrous ammonia is essential in the creation of nitrogen-based compounds like ammonium nitrate and urea. It is also used as a refrigerant in industrial cooling systems, cold storage, and air conditioning.