Used primarily as a stabilizer in polyvinyl chloride (PVC) plastics, this compound helps prevent degradation caused by heat and ultraviolet (UV) light during processing and outdoor exposure. It is especially effective in rigid PVC applications such as pipes, window profiles, and siding, where long-term durability is essential. The compound functions by scavenging free radicals and absorbing harmful UV radiation, thereby maintaining the physical properties and appearance of the plastic over time. It is often used in combination with other stabilizers like calcium-zinc or organotin compounds to enhance overall performance. Its compatibility with a range of additives and polymers makes it suitable for use in both industrial and consumer-grade plastic products.