B 2395 (OTTO) 4-tert-Butylcatechol, 98%+ Cas 98-29-3 - used as a stabilizer in the manufacture of polyurethane foam. 4-tert-Butylcatechol (TBC) is an organic chemical compound which is a derivative of catechol. B 2395 (OTTO) 4-tert-Butylcatechol, 98%+ Cas 98-29-3 - used as an inhibitor in polymerization of butadiene, styrene, vinyl acetate and other reactive monomers. It plays an important role in the synthesis of tungsten oxide nanoparticles by nonaqueous sol-gel process. It acts as a stabilizer in the manufacturing of polyurethane foam. It is employed as an antioxidant for synthetic rubber, polymers and oil derivatives. It is also utilized as a purification agent for aminoformate catalysts.