Used as a stabilizer in polyvinyl chloride (PVC) and other polymers to prevent degradation during processing and exposure to heat or light. It effectively scavenges harmful byproducts like hydrogen chloride that form during thermal decomposition, extending the material’s service life. Commonly found in flexible PVC applications such as cables, films, and coatings where long-term stability is required. Also acts as an antioxidant in rubber and plastic systems, improving resistance to aging and discoloration.