Detailed Description  Yttrium Oxide (yttria,yttrium, y2o3, rare earth, rare earth oxide) 1.0 Materials Description:  1.1 Yttrium oxide1.2 Purity: TREO:99% Y2O3/TREO:99.99% 2.0 Physical Specification:  2.1 Configuration: white powder 3.0 Chemical Requirements: 3.1 Composition/Tolerance:  3.2 Impurity:  RE-Impurities Typical Data (Max ppm) Non-RE Impurities Typical Data (Max ppm) La2O3/TREO 5 Fe2O3 500 CeO2/TREO 10 CuO 10 Pr6O11 /TREO 50 CaO 75 Nd2O3/TREO 50 NiO 10 Sm2O3/TREO 50 SiO2 18 Gd2O3/TREO 10 Cl- 100 Tb4O7/TREO 5 MnO 27 Ho2O3/TREO 5 Al2O3 28 Er2O3/TREO 10 L.O.I Tm2O3/TREO 5 - - Yb2O3/TREO 10 - - Lu2O3/TREO 5 - - 4.0 Analytical Methods: 4.1 Metallic Impurities: ICP 5.0 Packaging:  5.1 In 50kg barrel net each.