Tridodecylmethylammonium nitrate is primarily used as a phase transfer catalyst in organic synthesis. It facilitates the transfer of reactants between immiscible phases, enhancing reaction rates and yields. This compound is particularly effective in nucleophilic substitution reactions, where it helps in the transfer of anions from the aqueous phase to the organic phase. Additionally, it finds application in the preparation of ionic liquids, which are used as solvents in various chemical processes. Its ability to stabilize emulsions also makes it useful in the formulation of certain industrial products, including coatings and adhesives.