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Atomic no.:
Atom. weight: 140.115
Density: 6
Rare earth metal
Melting point: 798°C
Boiling point: 3443°C
Colour: silvery shiny
Discoverer: Martin H. Klaproth
Place: Berlin, Germany
Year: 1803

Cerium was discovered in 1803 by J.J. Berzelius and W. Hisinger at Vestmanland, Sweden. However, it was first isolated by W.F. Hillebrand and T.H. Norton in 1875 in Washington DC, USA. Cerium is a reactive grey metal and is one of the most abundant of the lanthanide group of metals, having an abundance of 68 ppm within the Earth's crust. It oxidises in air, ignites when heated and reacts rapidly in water and, hence, it must be stored in an air free enviroment. Cerium can be used as an alloying element with iron and other constituents to produce a flint material used in automatic ignition devices, and the addition of cerium to some metal alloys greatly improves their heat resistance. Cerium can also be used in vacuum apparatus as a "getter" for noble gases.

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 Cerium high precision density-standard cube 1cm3  Art. Nr. 005027  
Cerium high precision density-standard cube 1cm3
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Cerium metal -  high precision density-standard cube 10x10x10mm - 6 grams - in Ampoule under Argon - NEW!

Without argon this cube would turn black within a few minutes.

Using finest materials, each density cube was lapped to 10x10x10mm by a mechanical engineering company with an accuracy of 0.01 millimeter. Each one separately ground and 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 : 99.95%
Packing: PE - bag
- tax free
5-9 pcs.: 162.00 Euro
Availability: 7 in stock

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