Used as an ionic liquid in electrochemical applications such as dye-sensitized solar cells (DSSCs) where it improves conductivity and stability of the electrolyte. Commonly employed in organic synthesis as a catalyst or solvent due to its low volatility and high thermal stability. Also utilized in biomass processing for the dissolution and conversion of cellulose and lignin. Shows promise in extraction processes, including metal ion recovery and desulfurization of fuels. Its iodide content makes it suitable for use in redox reactions and as a source of iodide ions in photochemical systems.