Dihexylammonium acetate is primarily used as a phase-transfer catalyst in organic synthesis, facilitating the transfer of reactants between immiscible phases, such as aqueous and organic layers. This enhances reaction efficiency, particularly in nucleophilic substitution and polymerization processes. It is also employed in the preparation of ionic liquids, which are utilized in various applications like electrolytes for batteries, solvents for chemical reactions, and media for extraction processes. Additionally, its surfactant properties make it useful in emulsion stabilization and as a dispersing agent in industrial formulations.