Used primarily as a heat stabilizer in polyvinyl chloride (PVC) plastics, this compound prevents degradation during processing and extends the lifespan of PVC products. It is especially effective in applications requiring long-term thermal stability, such as in cables, pipes, and films. Its organotin structure with sulfur donors provides good color retention and resistance to heat-induced discoloration. Commonly found in rigid and flexible PVC formulations where high performance and durability are required. Also exhibits some biocidal properties, contributing to the material’s resistance to microbial growth in certain environments.