Used as an ionic liquid in electrochemical applications such as batteries and capacitors due to its high ionic conductivity and thermal stability. It serves as a green solvent in organic synthesis, facilitating reactions like alkylation and esterification with high efficiency and low volatility. Also employed in separation processes, including CO₂ capture and desulfurization of fuels, thanks to its tunable solvation properties. Its non-volatile nature makes it suitable for use in analytical chemistry, particularly in gas chromatography and mass spectrometry as a background electrolyte.