67906-12-1 EINECS 267-686-3 Nickelate(1-), ((N,N'-1,2-ethanediylbis(N-((carboxy-kappaO)methyl)glycinato-kappaN,kappaO))(4-))-, potassium, (OC-6-21)- Potassium ((N,N'-ethylenebis(N-(carboxymethyl)glycinato))(4-)-N,N',O,O',ON,ON')nickelate(1-) Potassium nickel ethylenediaminetetraacetate