Antioxidant 626
Bis(2,4-di-tert-butylphenyl)pentaerythritol Diphosphite (CAS 26741-53-7) is a phosphite-type secondary antioxidant and processing stabilizer with formula C33H50O6P2 and molecular weight ~604.7 g/mol. Commercial names include Antioxidant 626 and ADK Stab PEP 24. This phosphite is designed to scavenge radical and peroxy species and to react with hydroperoxides generated in polymer processing, thereby protecting polymers from oxidative degradation,














