Used primarily in the production of polyvinylidene chloride (PVDC) resins and copolymers, which are key components in high-performance barrier films for food packaging. These films provide excellent resistance to moisture, oxygen, and aromas, helping to extend shelf life. Also employed in the manufacture of specialty adhesives and coatings where chemical resistance and durability are required. Due to its volatility, it has been used as a monomer in polymer synthesis rather than in end-use consumer products. Its application in refrigerant blends has declined due to environmental and health concerns.