Synonyms: Cuprate(2-),[(ethylenedinitrilo)tetraacetato]-, dipotassium (8CI); Cuprate(2-),[[N,N'-1,2-ethanediylbis[N-(carboxymethyl)glycinato]](4-)-N,N',O,O',ON,ON']-,dipotassium, (OC-6-21)-; Cuprate(2-), [[N,N'-1,2-ethanediylbis[N-[(carboxy-kO)methyl]glycinato-kN,kO]](4-)]-, dipotassium, (OC-6-21)- (9CI); Dipotassium(ethylenediaminetetraacetato)cuprate(2-)