Samarium(III) oxide (Sm2O3) is a chemical compound.The oxide is commonly white to off yellow in color and is often encountered as a highly fine dust like powder.
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
Magnetic susceptibility (χ)：+1988.0·10−6 cm3/mol
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.