Title: Iridium Sesquioxide
CAS Registry Number: 1312-46-5
Molecular Formula: Ir2O3
Molecular Weight: 432.43
Percent Composition: 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.