Process for the production of dinitrotoluene

Details Process for the production of dinitrotoluene Process for the production of dinitrotoluene

1989-09-05

1991-03-19

Stoll, Robert L.

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

Organic compounds

Oxygen containing

568932, C07C20506

Patent

active

050012720

ABSTRACT:
Aromatic nitration reactions and, more specifically, a process for nitrating toluene to dinitrotoluene. The process involves a liquid phase nitration reaction of anhydrous nitric acid and toluene in a molar ratio of between about 5:1 and about 9:1 of nitric acid to toluene in a reactor at a reaction temperature of between about 40.degree. C. and about 70.degree. C., in the absence of sulfuric acid and in the absence of any dipolar organic solvent, to produce a mixture containing dinitrotoluene, and isolating said dinitrotoluene by contacting said mixture with a phase separating effective amount of an alkali or alkaine earth metal nitrate salt to cause phase separation of said dinitrotoluene.

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