Didodecyl dimethyl ammonium bromide CAS No. 3282-73-3, also called n-dodecyl-n,n-dimethyl-1-dodecanaminiubromide, Dimethyl didodecyl ammonium bromide, Dilauryl dimethyl ammonium bromide. Assay 98%, White to almost white solid, Easily soluble in polar solvents, slightly soluble in water.