Ytterbium Oxide Formula:Yb2O3;M.Wt:394.08 RE purity:min99.99% RE impurities:max100ppm La2O3max 1ppm CeO2max 1ppm Pr6O11max 1ppm Nd2O3max 1ppm Sm2O3max 1ppm Eu2O3max 1ppm Gd2O3max 1ppm Tb4O7max 1ppm Dy2O3max 1ppm Ho2O3max 10ppm Tm2O3max 10ppm Er2O3max 10ppm Lu2O3max 40ppm Y2O3max 10ppm TREO:min99% Non-RE impurities:Fe2O3 max 3ppm SiO2 max 25ppm CaO max 20ppm Cl- max180ppm Loss on ignition: max 1% DESCRIPION: White powder, insoluble in water, soluble in acids. USES: For electronic industry and scientific research. PACKING: According to the requirements of clients.