34088-94-3 68015-77-0 Dipotassium ((N,N'-ethylenebis(N-(carboxymethyl)glycinato))(4-)-N,N',O,O',ON,ON')manganate(2-) EINECS 268-144-9 Manganate(2-), ((N,N'-1,2-ethanediylbis(N-((carboxy-kappaO)methyl)glycinato-kappaN,kappaO))(4-))-, dipotassium, (OC-6-21)-