Sodium hexachloroiridate(IV) hexahydrate is primarily used in the field of catalysis, where it serves as a precursor for synthesizing iridium-based catalysts. These catalysts are essential in various chemical reactions, including hydrogenation and oxidation processes, which are critical in the production of fine chemicals and pharmaceuticals. Additionally, it is employed in electrochemistry for the preparation of electrodes and in the study of electrochemical properties due to its stable and well-defined redox behavior. In materials science, this compound is utilized to create iridium-containing coatings and films, which are valued for their durability and resistance to corrosion. Its role in research and development also extends to the synthesis of novel iridium complexes, contributing to advancements in coordination chemistry and metal-organic frameworks.