Praseodymium

Name:
Praseodymium
Detailed information:

M Formula:	Pr
Properties:
Yellowish metal, tarnishes easily (color of salts green). Paramagnetic, d 6.78–6.81, mp 930C, bp 3,200C, ignites to oxide (200–400C), liberates hydrogen from water. Soluble in dilute acids.
Source:
Monazite, cerite, and allonite; also a fission product.
Derivation:
Reduction of the trifluoride with an alkaline metal or by electrolysis of the fused halides.
Grade:
Ingots, rods, sheets, 98.8–99.9+% pure.
Use:
Praseodymium salts, ingredient of mischmetal, core material for carbon arcs, colorant in glazes and glasses, catalyst, phosphors, lasers.

See Didymium.