Used as a stabilizer in polyvinyl chloride (PVC) plastics, enhancing resistance to heat and light degradation. It improves the longevity and performance of flexible PVC products such as cables, films, and sheets. Also serves as a crosslinking agent in coatings and adhesives, contributing to better film formation and durability. Its sulfur-containing structure provides antioxidant properties, making it valuable in polymer systems exposed to high temperatures during processing or end-use.