PROCESS FOR PREPARING 1H-1,2,4-TRIAZOLE

摘要

Process for the preparation of 1,2,4-triazole comprises contacting hydrazine or its aqueous solutions with at least about 2.5 moles of formamide at a temperature of 140 DEG to 210 DEG C. and then recovering the resultant 1,2,4-triazole in yields of 92-98% with 94-98% purity. The formamide is maintained in an excess over about the 2.5 molar amount consumed in the reaction with the hydrazine. Recovery steps for isolating the 1,2,4-triazole are disclosed.