1,1'-Biphenyl, 2,2',3,3',5,5'-hexachloro- 2,2',3,3',5,5'-HEXACHLOROBIPHENYL 2,2',3,3',5,5'-Hexachloro-1,1'-biphenyl 2,3,5,2',3',5'-Hexachlorobiphenyl 35694-04-3 BRN 2288106