Benzalkonium Chloride 50% (BKC 50%) is a colorless Liquid, soluble in water in all proportions. It is a safe,rapid acting bactericide, algaecide and Fungicide. BKC is a cationic surface-acting agent belonging to the quaternary ammonium group. It has three main categories of use; as a biocide, a cationic surfactant and phase transfer agent in the chemical industry. Benzalkonium chloride is readily soluble in ethanol and acetone. Although dissolution in water is slow, aqueous solutions are easier to handle and are preferred. We also manufacture BKC 80%.