Synonyms: | 1,1'-Biphenyl, 2,2',3,3',4',5,5',6-octachloro;2,2',3,3',4,5,5',6'-Octachloro-1,1'-biphenyl;PCB 199;2,2',3,3',4',5,5',6-OCTACHLOROBIPHENYL;2,2',3,3',4,5,5',6'-OCTACHLOROBIPHENYL;PCB NO 201;2,2',3,3',4,5,5',6'-OCTACB UNLABELED CERTIFIED STANDARD;1,2,3,4-tetrachloro-5-(2,3,5,6-tetrachlorophenyl)benzene |