Process for controlling diazotization reactions involving nitrou

Details Process for controlling diazotization reactions involving nitrou Process for controlling diazotization reactions involving nitrou

1982-02-01

1984-03-27

Higel, Floyd D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C11304

Patent

active

044393610

ABSTRACT:
The disclosure relates to a process for controlling diazotization reactions. To this end, a reaction batch containing an aromatic amine and nitrous acid is vigorously agitated so as to continuously renew the surface area of the batch. The air above said surface area is exhausted at a constant rate and tested for its content of nitrous gases originating from partially decomposed nitrous acid. Nitrous acid or dissolved matter forming it under the reaction conditions is supplied to the feed amine in the proportions necessary to provide for a content between 5 and 300 ppm nitrous gases in the exhausted air.

REFERENCES:
patent: 4020051 (1977-04-01), Herkes
patent: 4233213 (1980-11-01), Breig et al.
patent: 4234478 (1980-11-01), Atherton et al.
patent: 4246171 (1981-01-01), Hamilton et al.
patent: 4268437 (1981-05-01), Behringer et al.

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