Used as a reactive plasticizer in polyvinyl chloride (PVC) and other polymer systems, improving flexibility and processability while maintaining thermal stability. Its unsaturated structure allows it to copolymerize with vinyl monomers, enhancing compatibility and reducing migration compared to non-reactive plasticizers. Commonly applied in coatings, adhesives, and specialty resins where improved durability and resistance to extraction are required. The inclusion of hydroquinone (HQ) as a stabilizer prevents premature polymerization during storage and processing.