Iridium

Ir
77 192.2

Iridium

Our Products Product Characteristics Application Areas Historical Background
IRIDIUM IA-0,1,2
Producer Principal applications Product Form Packaging
KrastsvetmetThe Gulidov Krasnoyarsk Non-Ferrous Metals PlantGo to the glossary
  • Automobile spark plugs manufacturing industry
  • Electronics industry
  • Electrical industry
  • Chemical industry
Powder

Description:
Plastic containers KT-2

Packing size:
301×241×130 mm

CHEMICAL COMPOSITION, %
Element State starndard
for 12338-81
for IA-0
State starndard
for 12338-81
for IA-1
State starndard
for 12338-81
for IA-2
Ir min99.9899.9599.90
Trace elements max (Pt, Pd, Rh, Ru, Os)0.0100.0200.045
Au0.0020.0020.002
Pb0.0040.0050.010
Fe0.0050.0100.010
Si0.0020.0020.005
Ba0.0020.0020.005
Mg0.0010.0010.003
Al0.0040.0050.005
Ag0.0020.0020.005
Ni0.0010.0020.005
Cu0.0030.0050.01
Sn0.0020.0020.002
Ti0.0020.0050.01
Loss on ignition0.010.010.01
Physical and chemical characteristics
Latin name Iridium (Ir)
Group in Mendeleev's periodic table VIII
Atomic number 77
Atomic weight 192.22, a platinum group metal
Density 22.65 g/cm3
Melting point t 2,447 °С

Iridium is a platinum group metal. In 1804, the British chemist, Smithson Tennant, examined a black powder which was left after dissolving virgin platinum in aqua regia, and found that it contained two new elements. The salts of one of these new elements were coloured, quite literally, with all the colours of the rainbow. Tennant did not think too long about what to call his discovery, choosing the name “iridium”, from the Greek “iris”, or “rainbow”.

The world is not rich in this metal, with reserves in the ground not exceeding millionths of a per cent of the earth’s geological make-up. Each year, not more than a single ton of this metal is produced world-wide.

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