Dodecyl trimethyl ammonium bromide, DTAB, 99% CAS No. 1119-94-4, also called N,N,N-trimethyl-1-dodecanaminium bromide. Assay 99%min, White to almost white powder, soluble in water and ethanol. Stable below 100 ° C with good compatibility with cationic and non ionic surfactants.