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Ir
Iridium
Atomic no.:
77
Atom. weight: 192.217
Density: 22.65
Class:
platinum metal
Melting point: 2410°C
Boiling point: 4130°C
Colour: Array
   
Discoverer: Smithin Tennant
Place: London, England
Year: 1804

Discovered in 1803 in London by S. Tennant. Iridium is a rare, precious metal which is hard, brittle and has a low ductility, which makes it a difficult material to work. In appearance, it is a lustrous, silvery metal. It has an abundance in the earth's crust of approximately 3x10-6 ppm. As might be expected from its position in the periodic table, iridium is stable to air and water and is not attacked by any acids, including "aqua regia" (this acid is used to separate iridium from the other platinum group metals). However, fused NaOH will attack iridium. It is extremely corrosion resistant and is used as an alloying agent with metals such as gold and osmium to produce alloys which are extremely hard and have good corrosion resistance. Iridium is also used in spark plugs, and its radioactive isotope, 192Ir is a medium energy gamma emitter used for industrial radiography.

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 IRIDIUM most perfect density-standard cube 10x10x10mm  Art. Nr. 004111  
IRIDIUM most perfect density-standard cube 10x10x10mm
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SPECIAL OFFER!

IRIDIUM -  precision density-standard cube 1cm3 - 22.5 grams NEW!

Made by Heraeus Germany - incl. certificate of analysis

These are the densest and most perfect commercially available Iridium cubes on the market: 22.5g/cm3

Please note that this item is excluded from reductions or special offers. 

Using finest materials, each density cube was lapped to 10x10x10mm by a famous company especialized in noble metals. 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. Altogether 25 elements are planned in a complete set in a wooden case.

standard price 2.511,84€ - Special offer valid until June 30, 2019

Amount: 1 St. / 1 pc..
Purity : 99,95%
Packing: PE - bag
2,411.00
- tax free

Availability: 2 in stock

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