PROCESS OF PREPARING 2,2'-(1-METHYL-1,2-ETHANEDIYLIDENE)BISHYDRAZINE CARBOXIMIDAMIDE

摘要

Process for the preparation of 2,2'-(1-methyl-1,2-ethanediylidene)bis[hydrazine carboximidamide] by: a) reacting aminoguanidinehydrochloride with methylglyoxal aldehyde or methylglyoxal dimethyl acetal;and b) purifying the 2,2'-(1-methyl-1,2-ethanediylidene)bis[hydrazinecarboximidamide] by crystallization from an acidic aqueous-isopropyl alcoholmedium.