Samarium(III) Oxide is a chemical compound with the chemical formula Sm2O3. It is a highly insoluble thermally stable Samarium source suitable for glass, optic and ceramic applications. Samarium oxide readily forms on the surface of samarium metal under humid conditions or temperatures in excess of 150°C in dry air. The oxide is commonly white to off yellow in color and is often encountered as a highly fine dust like pale yellow powder, which is insoluble in water.
Samarium(III) Oxide Properties
| CAS No.： | 12060-58-1 | |
| Chemical formula | Sm2O3 | |
| Molar mass | 348.72 g/mol | |
| Appearance | yellow-white crystals | |
| Density | 8.347 g/cm3 | |
| Melting point | 2,335 °C (4,235 °F; 2,608 K) | |
| Boiling point | Not Stated | |
| Solubility in water | insoluble | |
High Purity Samarium(III) Oxide Specification
Particle Size(D50) Min. 0.03 μm
| Purity(（Sm2O3） | 99.9% |
| TREO(Total Rare Earth Oxides) | 99.34% |
| RE Impurities Contents | ppm | Non-REEs Impurities | ppm |
| La2O3 | 72 | Fe2O3 | 9.42 |
| CeO2 | 73 | SiO2 | 29.58 |
| Pr6O11 | 76 | CaO | 1421.88 |
| Nd2O3 | 633 | CL¯ | 42.64 |
| Eu2O3 | 22 | L.O.I | 0.79% |
| Gd2O3 | <10 | ||
| Tb4O7 | <10 | ||
| Dy2O3 | <10 | ||
| Ho2O3 | <10 | ||
| Er2O3 | <10 | ||
| Tm2O3 | <10 | ||
| Yb2O3 | <10 | ||
| Lu2O3 | <10 | ||
| Y2O3 | <10 |
Packaging】25KG/bag Requirements:moisture proof, dust-free, dry, ventilate and clean.
What is Samarium(III) Oxide used for?
Samarium(III) Oxide is used in optical and infrared absorbing glass to absorb infrared radiation. Also, it is used as a neutron absorber in control rods for nuclear power reactors. The oxide catalyzes the dehydration and dehydrogenation of primary and secondary alcohols. Another use involves preparation of other samarium salts.
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