Synonyms: Bibenzyl, a,a,a',a'-tetramethyl- (6CI,8CI);1,1,2,2-Tetramethyl-1,2-diphenylethane;1,1'-(1,1,2,2-Tetramethyl-1,2-ethanediyl)bis[benzene];1,2-Diphenyltetramethylethane;2,3-Dimethyl-2,3-diphenylbutane;2,3-Diphenyl-2,3-dimethylbutane;BC 90;Bicumyl;CCDFB 90;Dicumene;Dicumyl;Interox CC-DFB;NSC 34859;Nofmer BC;Nofmer BC 90;Perkadox 30;a,a,a',a'-Tetramethylbibenzyl;a,a'-Dicumyl;