Dinitroaniline purification with inorganic acid halides

Details Dinitroaniline purification with inorganic acid halides Dinitroaniline purification with inorganic acid halides

C - Chemistry, Metallurgy

07

C

260/612.3, 260/5

C07C 211/52 (2006.01) C07C 209/84 (2006.01)

Patent

CA 1062729

Abstract of the Disclosure A process which comprises contacting a nitrosamine- containing dinitroaniline selected from the group consisting of trifluralin, isopropalin, benefin, ethalfluralin, butralin, tendimethanlin, fluchloralin, profluralin, dinitramine, 4-trifluoromethyl-2,6-dinitro- 3-chloro-N,N-diethylaniline, 4-methyl-2,6-dinitro-N,N- bis(2-chloroethyl)anillne, oryzalin, and nitralin, in liquid case, with a reagent selected from the group consisting of PC13, PC15, PBr3 and POCl3 until the concentration of the nitrosamine has been reduced and thereafter recovering the dinitroaniline.

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