... 1, Disoctyl Dimethyl Ammonium Chloride 2, Dioctyl Dimethyl Ammonium Chloride 3, D821 4, CAS NO.5538-94-3 Disoctyl Dimethyl Ammonium Chloride / ... D821 / 5538-94-3 NamerDisoctyl Dimethyl Ammonium ChlorideOther NamerDioctyl Dimethyl Ammonium Chloride, D821, ... , fabric softener.2, Disinfectant, Germicide. Disoctyl Dimethyl Ammonium Chloride / D821 / 5538-94-3