Cyanide reduction in nitroaromatic process

Details Cyanide reduction in nitroaromatic process Cyanide reduction in nitroaromatic process

1980-05-19

1982-11-30

Michl, Paul R.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568934, 568935, C07C 7602

Patent

active

043617123

ABSTRACT:
The invention relates to a method of eliminating or substantially reducing the amount of cyanide formed in a polynitroaromatic, e.g. dinitrotoluene process. The invention comprises removing the nitrophenolic material from the mononitroaromatic formed in a first stage nitration of toluene prior to feeding the mononitroaromatic to the subsequent nitration zones.

REFERENCES:
patent: 1975598 (1934-10-01), Davies
patent: 2132845 (1938-10-01), Castner
patent: 2382133 (1945-08-01), Stapleton
patent: 3185738 (1965-05-01), Cossaboon
patent: 3957889 (1976-05-01), Milligan
patent: 3981933 (1976-09-01), Cook
patent: 4261908 (1981-04-01), Schroeder

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