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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:	silvery shiny

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. Views: 50451

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Iridium melted pearl, ~ 1.05g, 99,95% purity! Amount: 1.05g Purity :99,95% 1 pcs.: out of stock! Details	Iridium melted pearl, ~ 1.33g, 99,95% purity! Amount: 1.28g Purity :99,95% 1 pcs.: out of stock! Details	Acrylic Element-block Iridium Ir - 50mm NEW! Amount: 1 St. Purity :99.98% 1 pcs.: out of stock! Details	High pure Iridium pellet Ø ~5x 6mm- 1.69g in Ampoule Amount: 1 St. /1 pc. Purity :99.93% 1 pcs.: out of stock! Details
Acrylic Element-block Iridium Ir - 50mm NEW! Amount: 1 St. Purity :99.98% 1 pcs.: out of stock! Details	Big Iridium melted pearl, ~ 4.05g, 99,98% purity! Amount: ca. 4.05g Purity :99,98% 1 pcs.: out of stock! Details	Iridium melted pearl, 3.0g, 99,98% purity! Amount: 3.0g Purity :99,98% 1 pcs.: out of stock! Details	Iridium melted pearl, 1.12g, 99,98% purity! Amount: 1.12g Purity :99,98% 1 pcs.: out of stock! Details
Iridium melted pearl, 1.17g, 99,98% purity! Amount: 1.17g Purity :99.98% 1 pcs.: out of stock! Details	Iridium melted pearl, 1.35g, 99,98% purity! Amount: 1.35g Purity :99.98% 1 pcs.: out of stock! Details	Iridium melted pearl, 2.66g, 99,98% purity! Amount: 2.66g Purity :99.98% 1 pcs.: out of stock! Details	Big Iridium melted pearl, ~ 2.41g, 99,98% purity! Amount: ~ 2.41g Purity :99,98% 1 pcs.: out of stock! Details
Big Iridium melted pearl, ~ 2.72g, 99,98% purity! Amount: ~ 2.72g Purity :99,98% 1 pcs.: out of stock! Details