Used as a phase-transfer catalyst in organic synthesis, particularly in fluorination reactions where it facilitates the transfer of fluoride ions into organic phases. Its structure stabilizes charged intermediates, making it effective in nucleophilic substitution reactions. Commonly employed in the preparation of fluorinated pharmaceuticals and agrochemicals due to its ability to enhance reaction rates and selectivity under mild conditions. Also utilized in electrochemical applications as a supporting electrolyte because of its high thermal stability and solubility in polar aprotic solvents.