(C16-C18) and (C18)Unsaturated alkyltrimethylammonium chloride (C16-C18) and C18 Unsaturated alkyltrimethylammonium chloride 68002-61-9 EINECS 268-074-9 Quaternary ammonium compounds, (C16-18 and C18-unsatd. alkyl)trimethyl, chlorides