Used primarily in the synthesis of cationic polymers for water treatment processes, this chemical aids in the flocculation and removal of negatively charged impurities and organic matter from wastewater. It is a key monomer in producing polyelectrolytes used in municipal and industrial water purification systems. Commonly employed in the paper industry to improve dry strength and retention during papermaking by enhancing fiber bonding. Its positive charge interacts with cellulose fibers, increasing sheet strength and reducing fiber loss. Also utilized in the formulation of antimicrobial coatings and surfaces due to its quaternary ammonium functionality, which disrupts microbial cell membranes. Applied in textiles, medical devices, and hygiene products for its biocidal properties. Serves as a modifier in the production of ion-exchange resins and adsorbents, particularly for the removal of anionic contaminants such as nitrates, phosphates, and dyes from aqueous solutions. Used in some biomedical applications, including drug delivery systems and hydrogels, where controlled charge and polymer architecture are required for targeted release or biocompatibility.