Process for the continuous indirect diazotization of aromatic am

Details Process for the continuous indirect diazotization of aromatic am Process for the continuous indirect diazotization of aromatic am

1978-09-01

1980-11-11

Shaver, Paul F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C11300

Patent

active

042332133

ABSTRACT:
Fluctuations in concentration of the starting materials during continuous diazotization are taken into account by passing a component stream from the receiver to the diazotization vessel through an analyser where, for a short residence time, the nitrite content is determined by an electrochemical measuring technique. A required nitrite excess is adjusted in the receiver on the basis of this measurement. By virtue of the pH-value, however, a diazotization reaction still does not take place in the receiver.

REFERENCES:
patent: Re19645 (1935-07-01), Hancock et al.
patent: 3117954 (1964-01-01), Hupfer
patent: 3423391 (1969-01-01), Kindler et al.

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