Aluminium chloride is a chemical compound that is widely used in the industrial, laboratory, and medical fields. Synonyms for aluminium chloride include aluminum trichloride, trichloroaluminum, and aluminic chloride. It is a white or yellowish powder that is highly soluble in water and has a strong, pungent odor. Aluminium chloride is used in several applications, including as a catalyst in chemical reactions, as an additive in antiperspirants, as a coagulant in water treatment, and as a reagent in organic synthesis. Despite its many uses, aluminium chloride is a highly reactive and corrosive substance that should be handled with caution.