Used as an ionic liquid in electrochemical applications such as batteries and capacitors due to its high ionic conductivity and wide electrochemical window. It serves as a green solvent in organic synthesis, facilitating reactions like Heck coupling and Diels-Alder with improved yields and recyclability. Also employed in separation processes, including extraction of metals and desulfurization of fuels. Its low volatility and thermal stability make it suitable for use in high-temperature reactions and industrial processes where conventional solvents degrade.