Removal of dinitrotoluene from process water

Details Removal of dinitrotoluene from process water Removal of dinitrotoluene from process water

1997-03-26

1998-06-09

Geist, Gary

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

Organic compounds

Oxygen containing

C07C20500

Patent

active

057636966

ABSTRACT:
Reduction of dinitrotoluene impurity in water is achieved by distillation in the presence of nitric acid. A suitable process for such reduction comprises (a) contacting said composition with nitric acid to provide a nitric acid-containing composition, (b) distilling at least a portion of said water in said nitric acid-containing composition to provide vaporized water containing a reduced concentration of said dinitrotoluene, and (c) separating said vaporized water from said nitric acid-containing composition.

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