Used as a phase transfer catalyst in organic synthesis, facilitating reactions between compounds in different phases by improving ion accessibility. Commonly applied in alkylation and oxidation processes due to its high thermal stability and solubility in nonpolar solvents. Also serves as an ionic liquid component in electrochemical applications, such as batteries and capacitors, where it contributes to ionic conductivity and low volatility. Its long alkyl chains provide surfactant-like properties, making it useful in separation processes and emulsion stabilization.