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 alkylation, oxidation, and esterification processes where efficient mixing and reaction rates are critical. Also serves as a stabilizer or modifier in polymerization reactions, improving control over molecular weight and structure. Its long alkyl chain enhances solubility in nonpolar media, making it effective in industrial processes requiring lipophilic catalysts.