Used primarily as a phase transfer catalyst in organic synthesis, it facilitates reactions between compounds in different phases, enhancing reaction rates and yields. It is particularly effective in nucleophilic substitution reactions, where it helps transfer anions from the aqueous phase to the organic phase. Additionally, it serves as a strong base in various chemical reactions, including the preparation of quaternary ammonium salts. In the field of polymer chemistry, it is employed as a catalyst for the polymerization of certain monomers. Its application extends to the production of specialty chemicals and pharmaceuticals, where it aids in the synthesis of complex molecules.