996-34-9 Diytterbium trioxalate EINECS 213-633-4 Ethanedioic acid, ytterbium(3+) salt (3:2) Ytterbium, (mu-(ethanedioato(2-)-kappaO1,kappaO2':kappaO1',kappaO2))bis(ethanedioato(2-)-kappaO1,kappaO2)di-