Isonox 132 2,6-di-tertiary-butyl-4-sec-butylphenol 17540-75-9 Schenectady International Antioxidants >> Phenolic Polyvinyl Chloride (PVC) ADHESIVE 2,6-di-tertiary-butyl-4- sec-butylphenol is an antioxidant. Low cost, highly active, liquid stabilizer for adhesives. Antioxidant.