Used as a catalyst in organic synthesis, particularly in esterification and alkylation reactions, due to its strong acidic properties. It is also employed in the production of biodiesel, where it enhances the efficiency of the transesterification process. In the field of electrochemistry, it serves as an electrolyte in various types of batteries and fuel cells, improving conductivity and stability. Additionally, it is utilized in the extraction and separation of metals, offering a greener alternative to traditional solvents. Its ionic liquid nature makes it valuable in green chemistry applications, reducing the need for volatile organic compounds.