2,2'-((3,3'-Dimethyl-4,4'-biphenylylene)bis(azo))bis(4-(1,1,3,3-tetramethylbutyl)phenol) 7218-82-8 EINECS 230-616-7 Phenol, 2,2'-((3,3'-dimethyl(1,1'-biphenyl)-4,4'-diyl)bis(azo))bis(4-(1,1,3,3-tetramethylbutyl)-