Erbium oxide 

 Cas No. 12061-16-4 
 Formula Er2O3 
 Molecular weight of 382.54 

 Quality standards 
 Appearance of the Appearance the Pink Powder 
 X-ray diffraction X-Ray Diffraction Conforms to Structure, 
 Purity Purity ≥ 99.99% Based on Rare Earth analysis 
 ICP Major Analysis Confirms Hafnium component 
 Complexometric of EDTA 86.1 - 88.8% 
 Trace Rare Earth Analysis of Trace Rare Earth Analysis ≤ 200ppm by by ICP Atomic emission 

 Traits pale pink powder, insoluble in water, soluble in acid. Density: 8.64 
 Use as a magnetic material and the phosphor additives, special light-emitting glass coloring raw materials for the reactor control materials.