Cetyl dimethyl benzyl ammonium chloride hydrate CAS No. 122-18-9, also called Hexadecyl dimethyl benzyl ammonium chloride, Benzyl dimethyl hexadecyl ammonium chloride, Benzyl cetyl dimethyl ammonium Chloride Hydrate. Assay 98%, Contains a crystal water, White crystalline powder, Slightly soluble in water and easily soluble in ethanol.