Used as a stabilizer in polyvinyl chloride (PVC) plastics, particularly in transparent and rigid PVC products. It prevents degradation during processing and extends the lifespan of the material by protecting against heat and UV light. Commonly found in construction materials like window profiles, sheets, and technical parts where clarity and durability are important. Also acts as a catalyst in certain polymerization reactions and silicone curing processes. Its low toxicity compared to other organotin compounds makes it suitable for applications with moderate safety requirements.