Used primarily as a reactive intermediate in organic synthesis, this chemical is key in producing ion exchange resins and specialty polymers. Its reactive chlorine and vinyl group allow it to act as a crosslinking agent, enhancing the durability and thermal stability of resins. It is also employed in modifying polymers to introduce functional groups for use in pharmaceuticals, agrochemicals, and coating materials. Additionally, it serves in the preparation of quaternary ammonium compounds used as biocides and antimicrobial agents. Its ability to copolymerize with other monomers makes it valuable in creating tailored materials for industrial and analytical applications.