Ammonium hydroxide is a colorless liquid with a strong and pungent odor, it is also known as ammoniacal water or liquid ammonia. It is characterized by its alkalizing properties.

Its main uses in industry and water treatment are as a pH regulator, antimicrobial agent and corrosion inhibitor. In low concentrations it is widely used in cleaning products. It is also used to make various personal hygiene products.

In the agricultural sector it is used as a fertilizer as a source of nitrogen for plants.