Pentaerythritol tetrakis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate)

Pentaerythritol tetrakis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate), commonly known as Irganox 1010, Anox 20, Dovernox 10, or RALOX 630, is a hindered phenolic primary antioxidant with CAS 6683-19-8. It carries no E-code designation and is classified under HS code 29182900 within the broader antioxidants and stabilizers category.

In polyolefin and engineering plastic processing, it interrupts free-radical chain reactions during thermal oxidation by donating hydrogen atoms to peroxy radicals, preventing polymer degradation at elevated processing temperatures. It is also used in lubricant formulations and adhesive systems where long-term oxidative stability under heat stress is required.

This material is available in powder and granule grades suited to compounding and masterbatch production. It is registered under REACH and complies with relevant food-contact regulations in multiple jurisdictions. Standard packaging includes 25 kg bags, with bulk options available depending on supplier.