68025-39-8 Cobaltate(6-), (((1,2-ethanediylbis((nitrilo-kappaN)bis(methylene)))tetrakis(phosphonato-kappaO))(8-))-, pentaammonium hydrogen, (OC-6-21)- EINECS 268-194-1 Pentaammonium cobaltous ethylenedi(nitrilodi(methylenephosphonate)) Pentaammonium hydrogen (((ethylenebis(nitrilobis(methylene)))tetrakis(phosphonato))(6-)-N,N',O,O'',O'''',O'''''')cobaltate(6-)