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Be
Beryllium


Atomic no.:
4
Atom. weight: 9.012182
Density: 1.8477
Class:
Earth alkali-
metal
Melting point: 1278°C
Boiling point: 2970°C
Colour: gray
   
Discoverer: Louis Nicolas Vauquelin
Place: Paris, France
Year: 1797

Discovered in 1797 by N.L. Vauquelin in Paris, but not extracted until 1828 by Wöhler (Berlin) and A.A.B. Bussy (Paris). Beryllium is a light and lustrous metal which is obtained by the electrolysis of a fused halide (e.g. BeCl2). It is resistant to attack by air or water, even at elevated temperatures (red heat). Beryllium is non-magnetic, is a good thermal conductor and is used as an alloying addition to copper or nickel, the alloys having excellent thermal, mechanical and electrical properties; in addition, when alloyed with nickel, the resultant Be/Ni alloy has the highest coefficient for secondary electron emission (12.3). Applications for pure beryllium include its use as windows in X-ray tubes and as a source of neutrons when bombarded with alpha particles, a technique used by Chadwick in 1932 in their discovery. Beryllium and its compounds are highly toxic, inhalation of the dust resulting in berylliosis, an inflammation of the lungs.

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 Beryllium - polished precision density-standard cube 1cm3  Art. Nr. 004012  
Beryllium - polished precision density-standard cube 1cm3
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Beryllium -  99.8% - Precision density-standard cube 1cm3 NEW! optically polished, laser engraved

Using finest materials, each density cube was lapped to 10x10x10mm with an accuracy of 0.01 millimeter. Each one separately ground and mirror polished it represents the theoretical density of the respective element by its weight. The weight is not affected by the laser inscription. Information such as element symbol, name and density is durable burned at the surface. Each element even shows its specific characteristis in colour and reaction with the laser. Altogether 25 elements are planned in a complete set in a wooden case.

Amount: 1 St. / 1 pc..
Purity : 99,8%
Packing: PE - bag
251.00
- tax free
5-9 pcs.: 239.00 Euro
Availability: 7 in stock

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 Beryllium - polished precision density-standard cube 10cm3  Art. Nr. 004935  
Beryllium - polished precision density-standard cube 10cm3
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Beryllium -  99.8% - Precision density-standard cube 1cm3 NEW! optically polished, laser engraved

21.5x21.5x21.5mm = 10cm3

18-48 grams

Using finest materials, each density cube was lapped to 21.5x21.5x21.5mm with an accuracy of 0.01 millimeter. Each one separately ground and mirror polished it represents the theoretical density of the respective element by its weight. The weight is not affected by the laser inscription. Information such as element symbol, name and density is durable burned at the surface. Each element even shows its specific characteristis in colour and reaction with the laser. Altogether 25 elements are planned in a complete set in a wooden case.
Lead time: ~ 4 weeks

Amount: 1 St. / 1 pc..
Purity : 99,8%
Packing: PE - bag
907.00
- tax free

***Lead time: ~ 4 weeks ***

All pictures are copyright protected and may not be used without our permission!

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