2,4,5,6-Tetrachloro-m-xylene-alpha,alpha'-diol 2,4,5,6-Tetrachlorobenzene-l,3-dimethanol 39568-89-3 BRN 2273274 EINECS 254-517-3 m-Xylene-alpha,alpha'-diol, 2,4,5,6-tetrachloro-