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Pr
Praseodymium
Atomic no.:
59
Atom. weight: 140.90765
Density: 6
Class:
Rare earth metal
Melting point: 931°C
Boiling point: 3250°C
Colour: Array
   
Discoverer: Carl Auer von Welsbach
Place: Vienna, Austria
Year: 1885

Praseodymium was discovered in 1805 by Baron Auer von Welsbach in Vienna, Austria. Praseodymium is a soft, white metal and a member of the lanthanide group of elements. It closely resembles neodymium and, along with other elements of the same group, is found in the same minerals. It has an abundance in the earth's crust of 9.5 ppm. It reacts slowly with oxygen but rapidly with water. As a pure metal, its uses are limited; however, it is used as an alloying constituent for alloys used to make permanent magnets and flints. Along with neodymium, praseodymium is used to manufacture yellow glass which can be used as eye protection (e.g. for welders).

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 Complete Rare Earth Set in ampoules under argon!  Art. Nr. 003842  
Complete Rare Earth Set in ampoules under argon!
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Complete Rare Earth Set (without wooden box)
 
Complete Rare Earth Set (16 Elements: La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Sc, Y)
All rare earth metals in one professional Set, each Element sealed in an ampoule under argon! The ampoules have a diameter of 11-12mm and are about 45-48mm long.
 
Metals like Europium, Cerium and Lanthanum are filled under special and extremely dry conditions in a glove box to keep the metal as shiny as possible.
 
Purities of the metals are:

99,9%  La, Ce, Pr, Nd,
99.95%  Dy, Tb, Gd, Er
99,99% Ho, Sm, Eu, Sc, Y, Tm, Yb, Lu

 

As professional producer and seller of chemical element samples for science and education we are able to offer you:
  • Surfaces are mechanically cleaned and oxidations removed
  • We do not fill any crumbs, filings or other low value material but ONLY carefully hand-selected pieces!
  • glass-ampoules are carefully cleaned and dried by a special process for several hours to remove even the slightest traces of humidity to make the samples last a life-long.
  • We use shatter-proof tempered glass, which are able to survive a 1 meter drop on a tiled floor.
  • Some elements like Europium, Lanthanum and Cerium are handled and filled under very dry and oxygen free atmosphere in a glove-box to keep the surface as shiny as possible.
  • lifelong warranty on breakage - should an ampoule break accidentally we replace it for free!

Amount: 1 Set
Purity : 3N - 5N
Packing: ampoules /Argon
292.00
- tax free
5-9 pcs.: 277.00 Euro
>9 pcs.: 262.00 Euro
Availability: 153 in stock

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