SN6 is widely used as a stabilizer in polyvinyl chloride (PVC) formulations. It prevents degradation during processing and extends the service life of PVC products exposed to heat and UV light. Common applications include cables, pipes, profiles, and sheets where long-term thermal and light stability are required. SN6 also acts as a secondary antioxidant, enhancing the performance of primary stabilizers in industrial polymer manufacturing. Its low volatility and good compatibility with PVC make it suitable for both rigid and flexible PVC applications.