Used primarily as a reactive intermediate in organic synthesis, this compound serves as a key monomer in the production of ion-exchange resins and functional polymers. Its reactive chlorine and vinyl group allow for easy modification and cross-linking, making it valuable in creating specialty resins for water purification and catalysis. It is also employed in the synthesis of quaternary ammonium compounds used as antimicrobial agents. In research, it acts as a linker in polymer-supported reactions and solid-phase synthesis, particularly in pharmaceutical and biochemical applications. Due to its ability to introduce reactive sites into polymers, it is widely used in developing functional coatings, adhesives, and modified surfaces with tailored chemical properties.