Used primarily as a phase transfer catalyst in organic synthesis, facilitating the transfer of reactants between immiscible phases. It is also employed in the preparation of quaternary ammonium compounds, which are essential in various industrial processes. In the electronics industry, it serves as an etchant in the manufacturing of printed circuit boards and semiconductors. Additionally, it finds application in analytical chemistry as a reagent for ion-pair chromatography, aiding in the separation and analysis of complex mixtures. Its role in biochemical research includes use as a stabilizing agent for proteins and enzymes.