Irganox 245, identified by CAS number 36443-68-2, is a high-performance sterically hindered phenolic antioxidant widely utilized in the polymer industry. Chemically known as triethylene glycol bis(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate, it serves as a primary stabilizer to protect organic substrates against thermo-oxidative degradation. Its molecular structure provides excellent thermal stability and low volatility, making it particularly effective during high-temperature processing cycles where maintaining the integrity of the polymer matrix is critical.
This additive is characterized by its superior color stability and resistance to extraction, which are essential for maintaining the aesthetic and mechanical properties of finished goods. In industrial and research contexts, it is valued for its compatibility with a broad range of substrates and its ability to work synergistically with secondary antioxidants like phosphites. Proper handling requires standard industrial hygiene practices to ensure safety and maintain the chemical’s efficacy over time.