Metal praseodymium 

 Cas No. 7440-10-0 
 Formula Pr 
 Molecular weight of 140.90 

 Quality standards 
 Appearance of the Appearance dark gray ingot or rod in oil 
 X-ray diffraction analysis of the X-Ray Diffraction Conforms to Structure, 
 Purity Purity ≥ 99.9% Based on Trace Metals, Impurities of by ICP 
 ICP Assay Confirms Praeseodymium component 
 Trace metal analysis of the total metallic C. A ≤ 2000ppm by by ICP Atomic emission 

 Traits silver piece of metal or dark brown powder. Metallic luster, when the air is easily oxidized to be sealed. 
 Melting point: 931 ℃ 
 Boiling point: 3520 ℃ 
 Density: 6.71 
 Storage seal filled with argon to save 
 The purpose is mainly used for SmPrCo, and PrFeB magnetic material.