Method for the treatment of dinitroanilines to reduce their...

Details Method for the treatment of dinitroanilines to reduce their... Method for the treatment of dinitroanilines to reduce their...

C - Chemistry, Metallurgy

07

C

260/590.1, 260/6

C07C 209/86 (2006.01) C07C 209/82 (2006.01) C07C 211/52 (2006.01)

Patent

CA 1320740

ABSTRACT Dinitroanilines are treated in the fused state by the addition of an effective quantity of an aliphatic or aromatic halosulphonic acid, having the general formula Image in which X is a halogen and R is selected from the group consisting of aliphatic radicals having from 1 to 10 carbon atoms, cycloaliphatic C5-C6 radicals, aryl radicals and aryl radicals substituted with lower (C1-C3) alkyl groups. The treatment enables the nitrosamine content to be reduced to less than 0.5ppm and/or the stabilisation of the nitroanilines against the formation of further nitrosamines.

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