Thermal hazard evaluation of Vilsmeier reaction with DMF and MFA

The Vilsmeier reaction is one of the important reactions in the organic photoconductor industry, and quantitative information of thermal hazards of the reaction is needed for process control and safety. In this report, the thermal hazards of Vilsmeier reaction are investigated, and heats of reaction are measured using reaction calorimeters. It is found that the thermal decomposition of the Vilsmeier complex is the maximum hazard in this reaction and that the selection of reaction procedure and solvent might be a key for the suitable reaction.