1,6-Hexanediaminium, N,N,N',N'-tetrabutyl-N,N'-diethyl-, bis(ethyl sulfate) 68052-49-3 71551-10-5 73207-58-6 EINECS 268-327-3 S,S'-Diethyl N,N'-hexane-1,6-diylbis(dibutylethylammonium) disulphate Tetrabutyldiethylhexamethylenediammonium ethylsulfate