INDEX NEXT UP PREVIOUS ATG Praseodymium (Pr) Praseodymium (Pr)

COLOURED GLASS BOTTLES
Atomic Number: 59
Atomic Weight: 140.98
Melting Point: 931
Boiling Point: 3512
Specific Gravity: 6.773 (alpha) 6.64 (beta)
Valence(s): 3 or 4
Von Welsbach isolated this Element in 1885. Praesodymium is obtained from the minerals monazite and bastnasite. It is used in misch metal for the production of cigarette lighters and also used by the motion picture industry. Praseodymium compounds give colour to glass and enamel. [LM] {RW}

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