3269-17-8 91491-30-4 EINECS 221-887-2 Ethanedioic acid, thulium(3+)salt (3:2) Thulium(3+) oxalate Thulium, (mu-(ethanedioato(2-)-kappaO1,kappaO2':kappaO1',kappaO2))bis(ethanedioato(2-)-kappaO1,kappaO2)di-