Formula: Sm₂O₃ CAS: 12060-58-1 EC No.: 235-043-6 M (Molar Mass): 348.72 g/mol D (Density): 8.35 g/cm³ mp (Melting Point): 2269 °C bp (Boiling Point): Not applicable Optical Rotation: Not applicable

Assay (as Sm₂O₃): ≥ 99.9 % (Rare Earth Oxides basis) Appearance: Pale yellow powder. Purity (Rare Earth Impurities): ≤ 0.1 % total Lanthanum (La): ≤ 0.01 % Cerium (Ce): ≤ 0.01 % Europium (Eu): ≤ 0.01 % Gadolinium (Gd): ≤ 0.03 % Other Non-RE Impurities (Fe, Ca, Si, etc.): ≤ 0.01 % each Loss on Ignition (1000°C): ≤ 1.0 %