1 results about "Hydrazine monohydrate" patented technology

The application provides a synthesis method of 1,2,4-triazole, which comprises the following steps: firstly, reacting part of formamide with hydrazine monohydrate hydrochloride to prepare monoacylhydrazine; and then, adding the monoacylhydrazine into another part of formamide by reverse titration to perform a dehydration reaction. The raw material formamide is added in a step-by-step manner, so that the conversion rate of the formamide is improved, and the yield of 1,2,4-triazole is improved. The generated monoacylhydrazine is added into the formamide by reverse titration, so that the process is optimized, and the yield of 1,2,4-triazole is further improved. By using the method, the yield of the final product 1,2,4-triazole can reach 95.4%, and the content is greater than 98%.