Synonyms: Benzil,4,4'-dichloro- (6CI,7CI,8CI);Ethanedione, bis(4-chlorophenyl)- (9CI);1,2-Bis(4-chlorophenyl)-1,2-ethanedione;1,2-Bis(4-chlorophenyl)ethane-1,2-dione;4,4'-Dichlorobenzil;4,4'-Dichlorodibenzoyl;Bis(4-chlorophenyl)ethanedione;Bis(p-chlorophenyl)ethanedione;NSC 274;p,p'-Dichlorobenzil;