1,6-Hexanediamine, N,N'-dicarboxymethyl-N,N'-dimethyl-, dimethochloride, diheptyl ester 7439-75-0 AMMONIUM, HEXAMETHYLENEBIS((CARBOXYMETHYL)DIMETHYL-, DICHLORIDE, DIHEPTYL ESTER Hexamethylenebis((carboxymethyl)dimethylammonium) dichloride diheptyl ester