Anox 20 Phenolic Antioxidant Anox 20 is a high molecular weight hindered phenolic antioxidant that provides very low volatility and excellent resistance to extraction from polymer compounds. Tetrakismethylene(3,5-di-t-butyl-4-hydroxyhydrocinnamate)methane CAS Reg. Number [6683-19-8] Typical Properties Appearance White, free flowing solid Bulk density, kg/L 0.55 Molecular weight 1178 Specific Gravity @ 20°C, g/ml 1.045 Melting range, °C 110 – 125 Flash point, °C 299 Thermogravimetric Analysis ( 10 mg @ 10°C/minute under N2) Weight Loss, % 5 10 25 Temperature, °C 350 365 387 Solubility @ 20°C(Weight %) Water 0.03 Acetone >100 Benzene >100 Chloroform >100 4 O OCH2 HO C Methanol 2 Hexane 0.45 Anox 20 is particularly effective against polymer degradation during long-term aging. It is also very effective as a process stabilizer. Anox 20 exhibits good resistance to discoloration at the high temperatures that are encountered in thermoplastic polymer processing.
