Process for producing chlorobenzene sulfochloride

Details Process for producing chlorobenzene sulfochloride Process for producing chlorobenzene sulfochloride

1985-10-17

1987-05-19

Chan, Nicky

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C14340

Patent

active

046666370

ABSTRACT:
A process for producing chlorobenzene sulfochloride comprises adding a reaction mixture of chlorobenzene and chlorosulfonic acid to water or diluted sulfuric acid to decompose excess chlorosulfonic acid; driving off hydrogen chloride thereby generated, from the system; bringing the sulfuric acid concentration in the sulfuric acid layer upon completion of the decomposition to be from 60 to 90%; and then separating chlorobenzene sulfochloride. The process is characterized in that the excess chlorosulfonic acid is decomposed at a temperature of from 40.degree. to 85.degree. C. and the chlorobenzene sulfochloride is separated in a liquid state at a temperature of from 60.degree. to 80.degree. C.

REFERENCES:
patent: 3108137 (1963-10-01), Barton et al.

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