C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/557.4, 260/6
C07D 217/24 (2006.01) C07D 209/46 (2006.01)
Patent
CA 1133014
ABSTRACT OF THE DISCLOSURE Nitrated aromatic compounds with a solidification point of more than about 10°C are obtained from the nitration batch without separation of the aqueous phase by crystalli- zation in a form practically without nitrosation agents. 4-Chloro-3,5-dinitrobenzotrifluoride, for example, which has been crystallized in this way, yields a Trifluralin, which has a nitrosamine content of a maximum of about 1 ppm upon further reaction with di-n-propylamine.
355358
Baessler Konrad
Habig Kurt
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Hoechst Aktiengesellschaft
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