((N,N'-Ethylenebis(glycinato))(2-)-N,N',O,O')copper 32575-57-8 5657-17-0 Copper, ((N,N'-1,2-ethanediylbis(glycinato-kappaN,kappaO))(2-))- Cupric ethylenediamine diacetate EINECS 251-106-0