Used as a phase-transfer catalyst in organic synthesis, facilitating reactions between reagents in different phases by transferring ions into organic solvents. Commonly applied in nucleophilic substitutions, oxidations, and polymerizations where it enhances reaction rates and yields. Also employed as a surfactant in emulsion stabilization and in the preparation of nanomaterials due to its ability to control particle size and dispersion. Its quaternary ammonium structure makes it effective in antimicrobial formulations and as a corrosion inhibitor in industrial systems.