FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing 4-amino-1,2,4-triazole. Method comprises contacting formic acid and hydrazine hydrate with subsequent thermal cyclisation by heating reaction mass to 190–200 °C, purification and recovery of 4-amino-1,2,4-triazole. Formic acid and hydrazine hydrate are brought into contact in molar ratio of 1.01:1 to 1.10:1, formic acid is used in concentration of 91–100 %, wherein formic acid and hydrazine-hydrate are simultaneously fed under a layer of reaction mass at temperature not exceeding 110 °C.
EFFECT: technical result is reduction of fire hazard of production and reduction of environmental pollution.
1 cl, 1 tbl, 11 ex
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