1,2,4,5-TETRACHLORO-3,6-DIMETHYLBENZENE 1,2,4,5-Tetrachlorodimethylbenzene 2,3,5,6-Tetrachloro-p-xylene 877-10-1 AI3-52685 Benzene, 1,2,4,5-tetrachloro-3,6-dimethyl- (9CI) EINECS 212-887-3 NSC 66546 Tetrachloro-p-xylene p-Xylene, 2,3,5,6-tetrachloro- (8CI)