1,1'-Biphenyl, 3,3',5,5'-tetrachloro- (9CI) 3,3',5,5'-TETRACHLOROBIPHENYL 3,3',5,5'-Tetrachlorodiphenyl 3,5,3',5'-Tetrachlorobiphenyl 33284-52-5 Biphenyl, 3,3',5,5'-tetrachloro- (8CI) NSC 113288