Disclosed is a novel p-dichlorobenzene production process which fulfils both high selectivity for p-dichlorobenzene and a high chlorine conversion rate.
Disclosed is a process for fractional crystallization of p-dichlorobenzene. 80 wt% of p-dichlorobenzene is used as raw materials.
Consequently, o-dichlorobenzene has a boiling point of 180 degrees Celsius, while p-dichlorobenzene boils at 174 degrees Celsius.
The method allows the production of p-dichlorobenzene with improved para selectivity and a reduced reaction time.
Provided is a process for the production of p-dichlorobenzene using a full size facility, which can be carried out by stable operation, and by which the objective substance can be obtained in a high yield.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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