Used primarily as a stabilizer and antioxidant in organic materials, especially in polymers and resins. It prevents degradation caused by oxidation during processing and prolonged storage, extending the service life of plastic products. Commonly applied in polyolefins, polyvinyl chloride (PVC), and synthetic rubbers to maintain mechanical properties and color stability under heat and light exposure. Also utilized in adhesives and coatings to improve resistance to thermal aging. Its ester structure provides good compatibility with polar and non-polar systems, allowing effective dispersion in various formulations.