Samarium oxide 

 Cas No. 12060-58-1 
 Formula Sm2O3 
 Molecular weight of 348.70 
 Alias ??high-density oxide, samarium oxide Sm 

 Quality standards 
 Projects of high purity 4N level 
 Rare earth purity RE purity ≥ 99.99% 
 Total rare earth impurities RE C. A, ppm: ≤ 100ppm 
 Eu2O3 
 Nd2O3 
 Pr6O11 
 Gd2O3 
 Y2O3 
 Total rare earth TREO> 99% 
 Non-rare earth impurities Non-C. A, ppm: 
 Of Fe2O3 ≤ 5ppm 
 Of SiO2 ≤ 30ppm 
 Of CaO ≤ 20ppm 
 Cl-≤ 200ppm 
 Loss on ignition Loss on ignition <1% 

 Traits pale yellow solid powder, insoluble in water, soluble in acid. Easy to absorb moisture and carbon dioxide in the air. 
 Melting point: 2 269 ℃ 
 Density: 8.35 

 Use for the manufacture mainly for the production of samarium; samarium cobalt permanent magnet material; electronic devices and ceramic capacitors; high coercivity and high energy product samarium-cobalt alloy.