5087. Iridium Sesquioxide

Nomenclature

CAS number: 1312-46-5
Ir2O3; mol wt 432.43.
Ir 88.90%, O 11.10%.

Properties

Blue-black powder. Decomposes at about 1000° into metal and oxygen. Insol in water; slowly dissolved by boiling HCl. Oxidized to IrO2 by HNO3.