1,1'-Biphenyl, 2,3,3'4,4'-pentachloro- (9CI) 2,3,3',4,4'-PENTACHLORO-1,1'-BIPHENYL 2,3,3',4,4'-Pentachlorobiphenyl 2,3,3'4,4'-Pentachloro-1,1'-biphenyl 2,3,4,3',4'-Pentachlorobiphenyl 3,4,2',3',4'-Pentachlorobiphenyl 32598-14-4 BRN 2283442 Biphenyl, 2,3,3',4,4'-pentachloro- PCB 105 PenCb