Also Called: 2,2’,3,3’,4,6’-hexachlorobiphenyl;2,2',3,3',4,6'-Hexachlorobiphenyl;2 , 2' , 3 , 3' , 4 , 6'-hexachlorobiphenyl;Polychlorinated biphenyls (PCBs);1,2,3-trichloro-4-(2,3,6-trichlorophenyl)benzene;1,1'-Biphenyl, 2,2',3,3',4,6'-hexachloro-;2,2',3,3',4,6'-PCB