Europium Oxide Formula: Eu2O3; M. Wt: 351. 02 RE purity: min 99. 99% RE impurities: max 100ppm: La2O3max 5ppm CeO2max 5ppm Pr6O11max 5ppm Nd2O3 max 5ppm Sm2O3max 5ppm Gd2O3max 5ppm Tb4O7max 5ppm Dy2O3max 5ppm Ho2O3 max 5ppm Er2O3max 5ppm Tm2O3max 5ppm Yb2O3max 5ppm Lu2O3max 5ppm Y2O3 max 5ppm TREO min99%  Non-RE impurities: Fe2O3 max 3ppm SiO2 max 20ppm CaO max 10ppm Cl- max 80ppm CuO max 3ppm PbO max 5ppm NiO max 3ppm ZnO max 5ppm Loss on ignition: max 1% DESCRIPION: Pinkish white powder, insoluble in water, soluble in mineral acids. It readily picks up moisture and carbon dioxide from atmosphere.  USES: As an activator of various phosphor, especially of red emitting phosphor, and as a material of bar for neutron controlling in nuclear reactor.  PACKING: According to the requirements of clients.