68309-98-8 Cadmate(6-), (((1,2-ethanediylbis((nitrilo-kappaN)bis(methylene)))tetrakis(phosphonato-kappaO))(8-))-, pentapotassium hydrogen, (OC-6-21)- EINECS 269-685-3 Pentapotassium cadmium ethylene di(nitrilo di(methylene phosphonate)) Pentapotassium hydrogen (((ethylenebis(nitrilobis(methylene)))tetrakis(phosphonato))(8-))cadmate(6-)