The present invention relates to a process for the continuous isothermal preparation of mononitrotoluenes with concentration of the resultant waste sulfuric acid and recycling of the concentrated waste sulfuric acid to the process.

A invenção atual relaciona-se a um processo para a preparação isothermal contínua dos mononitrotoluenes com concentração do ácido sulfúrico e do recycling waste resultantes do ácido sulfúrico waste concentrado ao processo.