Praseodymium Metal, is used as high-strength alloying agent in the magnesium used in parts of aircraft engines. It is an important alloying agent in Neodymium-Iron-Boron magnets.
Formula Pr
CAS No. 7440-10-0
Molecular Weight 140.91
Appearance Silvery white
Stability Moderately reactive in air Ductibility Good
Standard Specifications
Grade
99.9%
99.5%
99%
CHEMICAL COMPOSITION
Pr/TREM (% min.)
99.9
99.5
99
TREM (% min.)
99
99
99
Rare Earth Impurities ( in TREM, % max.)
La
Ce
Nd
Sm
Eu
Gd
Y
0.005
0.005
0.005
0.001
0.001
0.001
0.001
0.01
0.03
0.03
0.005
0.005
0.005
0.01
0.1
0.3
0.2
0.03
0.03
0.03
0.1
Non-Rare Earth Impurities ( % max.)
Fe
Si
Ca
Al
Mg
Mo
O
C
Cl
0.1
0.02
0.02
0.03
0.02
0.03
0.03
0.03
0.02
0.2
0.03
0.02
0.03
0.05
0.03
0.05
0.05
0.03
0.25
0.05
0.03
0.03
0.15
0.03
59
Pr
140.91
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