Oxidation of thulium 

 Cas No. 12036-44-1 
 Formula Tm2O3 
 Molecular weight of 385.88 
 Alias ??oxide two thulium 

 Quality standards 
 Project: high purity 4N-level 
 Purity purity ≥ 99.99% 
 Total rare earth impurities in the RE C. A, ppm: 
 Effect of La2O3 1ppm 
 Of CeO2 1ppm 
 Pr6O11 1ppm 
 Of Nd2O3 1ppm 
 Of Sm2O3 1ppm 
 Eu2O3 1ppm 
 Of Gd2O3 1ppm 
 Tb4O7 1ppm 
 Of Dy2O3 1ppm 
 Ho2O3 10ppm 
 Of Er2O3 10ppm 
 Yb2O3 25ppm 
 Lu2O3 by the 5ppm 
 Of Y2O3 5ppm 
 Total rare earth TREO> 99% 
 Non-rare earth impurities Non-C. A, ppm: 
 Of Fe2O3 ≤ 3 
 Of SiO2 ≤ 20 
 Of CaO ≤ 65 
 Cl-≤ 200 
 Loss on ignition Loss on ignition <0.50% 


 Indicators of 5N grade 
 Rare-earth purity of REO / TREO 99.999% 
 Total rare earth ΣREO% 99.5 
 Total rare earth impurities 0.001 
 0.001% of the non-rare earth impurities 
 Loss on ignition 0.5% 

 White characters slightly slightly green powder, insoluble in water, soluble in acid. 

 Uses for the laser dose of fluorescent materials, electronic industry and scientific research.