Production method of p-toluidine

The invention provides a production method of p-toluidine and relates to the technical field of chemical production. In the production method, liquid phase hydrogenation reduction is directly carried out on p-nitrotoluene in the presence of a palladium-carbon catalyst so as to produce the p-toluidine. The production method has the advantages of low reaction temperature, low reaction pressure and high reaction conversion rate; and the product performs water distribution and crystallization after hermetic filtration, the yield of the product is up to 98.3%, and no three wastes are basically emitted. Because no other byproducts are generated in the production process of the produce, the purity of the product is up to 98.6%, and the next generation products can be directly produced.