It is commonly used as a phase-transfer catalyst in organic synthesis, facilitating the transfer of reactants between immiscible phases, such as aqueous and organic layers. This property makes it valuable in reactions like nucleophilic substitutions, where it enhances reaction rates and yields.

Additionally, it finds application in the preparation of quaternary ammonium compounds, which are widely used in surfactants, disinfectants, and fabric softeners. Its ability to stabilize emulsions and improve solubility also makes it useful in various industrial processes, including polymerization and the production of specialty chemicals.

In research, it serves as a reagent for studying ionic interactions and as a template in the synthesis of mesoporous materials. Its versatility in catalysis and material science highlights its importance in both academic and industrial settings.