2-tert-butylhydroquinone

2-tert-Butylhydroquinone (TBHQ) is a synthetic phenolic antioxidant registered under CAS 1948-33-0 and EC 217-752-2. It is commonly abbreviated as TBHQ or MTBHQ and appears in technical literature under synonyms including t-Butylhydroquinone and Butylhydroquinone. No E-code designation applies within the EU regulatory framework.

In edible oils and fats, TBHQ retards oxidative rancidity by donating hydrogen atoms to free radicals, interrupting the chain reaction before off-flavours develop. In polymer and lubricant formulations, it functions as a heat stabilizer, scavenging peroxy radicals generated during high-temperature processing to slow degradation of the base material.

This material is supplied as a crystalline tan powder meeting FCC and food-grade specifications, with REACH compliance documented for EU supply chains. Procurement teams should confirm applicable national food-additive authorizations, as regulatory status varies by jurisdiction. Standard packaging formats include fiber drums and multi-wall bags.