1, Disoctyl Dimethyl Ammonium Chloride 2, Dioctyl Dimethyl Ammonium Chloride 3, D821 4, CAS NO.5538-94-3 Disoctyl Dimethyl Ammonium Chloride / D821 / 5538-94 ... : 1, Used in textile industry as antistatic agent, fabric softener.2, Disinfectant, Germicide. Disoctyl Dimethyl Ammonium Chloride / D821 / 5538-94-3