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Iridium(IV) oxide dihydrate is used with other rare oxides in the coating of anode-electrodes for industrial electrolysis and in microelectrodes for electrophysiology research. It is also used for reference electrode, which finds application in various fields biology, food industry, nuclear field, oil and gas industry.

Iridium dioxide hydrate is a compound with the chemical formula IrO₂-xH₂O. It consists of Iridium in the oxidation state +4 combined with oxygen and water molecules. This compound is known for its strong oxidising properties and is frequently used in catalysis, particularly in oxygen evolution reactions (OER) and other electrochemical processes. Iridium(IV) Oxide Hydrate is also employed in various scientific and industrial applications, such as in fuel cells, water electrolysis, and as a component in certain types of sensors and coatings.