METHOD FOR PRODUCING P-DICHLOROBENZENE

摘要

A method for producing p-dichlorobenzene wherein use is made of benzene and/ or chlorobenzene as a raw material and the raw material is subjected to nucleus chlorination with molecular chlorine to form p-dichlorobenzene, characterize d in that the chlorination is effected by the use of 0.1 to 3 mmol. of aluminu m chloride relative to 1 mol. of the above raw material and 0.1 to 0.9 mol. of a phenothiazine, such as phenyl 10H-phenothiazine-10-carboxylate, relative to 1 mol. of the aluminum chloride and at a chlorination degree in the range of 1 .2 to 2.5. The method allows the production of p-dichlorobenzene with improved para selectivity and a reduced reaction time.