2006-10-23T12:00:00.007692e273-9f14-4887-a414-3f0ac9d1d4752020-01-03T14:37:17.00false1,1'-biphenyl, 3,4,4',5-tetrachloro-3,4,5,4'-tetrachlorobiphenylCB 81PCB 813,4,4',5-tetrachlorobiphenyl (CB81)