Used as a sulfur-based antioxidant and stabilizer in polymers and rubber materials. It helps prevent degradation caused by heat and oxidation during processing and extends the service life of the final product. Commonly applied in industrial rubber goods such as tires, hoses, and belts where thermal stability is critical. Also functions as an intermediate in the synthesis of more complex sulfur-containing additives for lubricants and greases, enhancing their performance under high-stress conditions.