Behentrimonium chloride, also known as
docosanyl trimethylammonium chloride or BTAC-228, is an
irritating, toxic, and slightly flammable
yellow waxlike organic compound with chemical formula (
CH2)21()(
CH3)3
and CAS number 17301-53-0, used as an antistatic agent and a
disinfectant. It is commonly found in cosmetics such as
conditioners, hair dye, and mousse , and also
in detergents. In water treatment, it acts as a algaecide .