Iridium (Ir)
Iridium (Ir)
Iridium was discovered in 1803 and named for its colorful salts.
The most corrosion-resistant metal, it's resistant to acids but altered by hot salts like sodium chloride and sodium cyanide. This element is part of the platinum family and is white with a yellowish cast. It's also hard and brittle and therefore hard to machine, form, or work.
Iridium occurs naturally in alluvial deposits and can be obtained as a by-product of nickel mining.
It's used for crucibles, electrical contacts, and other applications that require high temperature tolerance. Combined with osmium, it's used for pen tips and compass bearings.
Iridium, 99.9%, (trace metal basis), powder
CAS: 7439-88-5 Molecular Formula: Ir Molecular Weight (g/mol): 192.22 MDL Number: MFCD00011062 InChI Key: GKOZUEZYRPOHIO-UHFFFAOYSA-N Synonym: ion,black,metallicum,iridium, elemental,iridium, ion ir4,iridio,hydrido-iridium,atom,powder,sponge PubChem CID: 23924 ChEBI: CHEBI:49666 IUPAC Name: iridium SMILES: [Ir]