1,2-Ethanediamine, N,N'-bis(phenylmethyl)-, dihydrochloride (9CI) 140-28-3 3412-76-8 DBED dihydrochloride EINECS 222-300-2 ETHYLENEDIAMINE, N,N'-DIBENZYL-, DIHYDROCHLORIDE F 212 N,N'-Dibenzylethylenediamine dihydrochloride N,N'-Dibenzylethylenediammonium dichloride NSC 148334