Ammonia Safety Ammonia is a commonly used chemical in commercial and household cleaners. In industry, ammonia is used in petroleum refining, to manufacture pharmaceuticals, to disinfect water, and as a refrigerant. In agriculture, ammonia can be used for crop processing, fertilizers, or as an anti-fungal treatment for citrus. Ammonia can also be produced naturally when stored materials such as manure, compost, or other materials break down. Ammonia can be mixed with water and sold as ammonium hydroxide, or used in compressed gas as anhydrous ammonia (meaning without water). Workers in all industries should know that, despite its common usage, ammonia poses health...