1308-96-9 162525-07-7 351529-40-3 Dieuropium trioxide EINECS 215-165-6 Europia Europia (Eu2O3) Europium oxide Europium oxide (Eu2O3) Europium oxide (EuO1.5) Europium sesquioxide Europium trioxide Europium(3+) oxide Europium(III) oxide