Synonyms: Ferrate(2-),[(ethylenedinitrilo)tetraacetato]- (8CI); Ferrate(2-),[[N,N'-1,2-ethanediylbis[N-(carboxymethyl)glycinato]](4-)-N,N',O,O',ON,ON']-,(OC-6-21)-; (Ethylenediaminetetraacetato)ferrate(2-);(Ethylenedinitrilo)tetraacetatoferrate(2-); Ferrous ethylenediaminetetraacetatedianion; Iron(EDTA)2-; Iron(II)-EDTA; Versene photo catalyst