2,6-Di-tert-butylphenol

2,6-Di-tert-butylphenol (CAS 128-39-2) is a hindered phenolic compound supplied under trade names including Ethyl 701, Isonox 103, and IONOX 99, and abbreviated as 2,6-DTBP. It carries no assigned E-code and is classified under HS code 29071900 within the broader category of monomers and building blocks.

In lubricant and fuel formulations, 2,6-DTBP donates hydrogen atoms to neutralise peroxy radicals, interrupting oxidative chain reactions that degrade base oils at elevated temperatures. It also serves as a chemical intermediate in synthesising hindered phenol antioxidants and as a UV stabiliser precursor in polymer systems, where it limits photo-oxidative degradation in coatings and rubber compounds.

2,6-DTBP is available as a crystalline solid and sourced to industrial and food-contact grades compliant with REACH registration requirements. Procurement teams should confirm grade suitability against FCC specifications for food and flavour applications. Standard packaging formats include fibre drums and multi-wall bags.