PROCESS FOR THE PREPARATION OF 1,2,4-TRIAZOLE

摘要

Process for the preparation of 1,2,4-triazole by the ring closure of diformyl hydrazine prepared by the formylation of hydrazine and ammonia which comprises reacting ammonium formiate with hydrazine hydrate by feeding continuously hydrazine or hydrazine hydrate at 120-160C to the aqueous solution of ammonium formiate and removing continuously the formed water ammonia from the mixture and isolating, if desired, the cold precipitated triazole from the mixture.