Nitric Acid → 2,3-Diaminotoluene

Participants

Reaction Steps

In a process for producing a meta-toluene diamine mixture wherein toluene is contacted with nitric acid in the presence of sulfuric acid under conditions for producing a reaction product containing primarily a dinitrotoluene isomer mixture, the dinitrotoluene recovered and then contacted with hydrogen in the presence of a hydrogenation catalyst, the resulting reaction product containing 2,4- and 2,6-toluene diamine formed into a liquid toluene diamine mixture, distilled in a column at elevated temperature to remove any water, ortho-toluene diamine and by-products, the substantially anhydrous meta-toluene diamine isomer mixture recovered from the bottom of the column, the improvement for preparing the resulting meta-toluene diamine isomer mixture for storage and/or transport which comprises:

Provenance & Evidence