1,1'-Biphenyl, 2-chloro- (9CI) 2-CHLOROBIPHENYL 2-Chloro-1,1'-biphenyl 2-Chlorodiphenyl 2-Monochlorobiphenyl 2051-60-7 Biphenyl, 2-chloro- EINECS 218-125-6 NSC 67354 o-Chlorobiphenyl o-Chlorodiphenyl