Process for the production of high purity iridium(III)chloride hydrate

A process for the production of high purity iridium(III) chloride hydrate having the formula IrCl3·×H2O·yHCl, wherein x=1.5 to 5 and y=0 to 1, the process comprising:

• (1) providing at least one material selected from the group consisting of solid H2[IrC16] hydrate, aqueous, at least 1 wt. % H2[IrCl6] solution, and solid IrCl4 hydrate;
• (2) adding, to the at least one material provided in step (1), at least one monohydroxy compound selected from the group consisting of monohydroxy compounds that are miscible with water at any ratio, primary monoalcohols comprising 4 to 6 carbon atoms, and secondary monoalcohols comprising 4 to 6 carbon atoms at a molar ratio of Ir(IV):
• monohydroxy compound from 1:
• 0.6 to 1_1000, and allowing to react for 0.2 to 48 hours in a temperature range from 20 to 120° C., followed by removing volatile components from the reaction mixture thus formed.