Used primarily as a quaternizing agent in organic synthesis, this compound is key in the preparation of quaternary ammonium salts, which serve as phase-transfer catalysts in industrial and laboratory reactions. It is also employed in the modification of polymers and resins to introduce positive charges, enhancing their adhesion and solubility properties. In biochemical applications, it acts as a methylating reagent for nucleic acids and proteins. Additionally, it finds use in the production of surfactants and antimicrobial agents due to the biocidal properties of quaternary ammonium compounds. Its reactivity with nucleophiles makes it valuable in the synthesis of specialty chemicals, including pharmaceutical intermediates.