Used primarily as a heat stabilizer in polyvinyl chloride (PVC) plastics, especially in wire and cable applications where thermal stability and long-term performance are critical. It helps prevent degradation during processing and extends the service life of PVC products exposed to elevated temperatures. Also offers good compatibility with plasticizers, making it suitable for flexible PVC formulations. Additionally, it functions as a catalyst in certain polymerization processes and in the production of polyurethanes. Its low volatility and favorable environmental profile compared to other organotin compounds make it a preferred choice in applications requiring reduced emissions and improved safety.