- Automobile spark plugs manufacturing industry
- Electronics industry
- Electrical industry
- Chemical industry
Packaging: Plastic containers KT-2 301 х 241 х 130 mm
Physical and chemical characteristics:
- Latin name Iridium (Ir)
- Chemical element of Group VIII in Mendeleev's periodic table
- Atomic number 77
- Atomic weight 192.22, a platinum group metal
- Density 22.65 g/cmі
- Melting point 2,447°C.
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.
Resistant to corrosion and aggressive environment, iridium is used for manufacturing of heat resistant crucibles, including those for growing single crystals required for light emitting diodes in LCD TVs. In automotive sector iridium is used in electrodes for spark plugsof internal combustion engines. Iridium is used in the production of coatings, weights and measures, details of measuring tools. Iridium is used in refractory glass blowing, in production of thermocouples, and its catalytic properties make it possible to find itsapplication in chemical industry. Platinum and iridium electrodes are used in cardiac stimulators and in various medical studies.