1,2-Ethanediamine, N,N'-bis(2-aminoethyl)-, tetrahydrochloride 181589-66-2 3,6-Diazaoctane-1,8-diamine tetrahydrochloride 4961-40-4 EINECS 225-604-3 N,N'-Bis(2-aminoethyl)-1,2-ethanediamine tetrahydrochloride NSC 158271 Trientine tetrahydrochloride Triethylenetetramine, tetrahydrochloride