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 reusability. Its low volatility and thermal stability make it suitable for use in high-temperature processes and catalytic systems. Also employed in separation processes, including extraction of metals and desulfurization of fuels.