Process for the production of thiocarbohydrazide

摘要

TCH is produced by a process which does not require expensive measures to remove hydrazine. In this process, hydrazinium dithiocarbazinate is reacted with an amine other than hydrazine or a strong base, optionally in the presence of water. It is preferred that a sulfur suppressing compound also be included in the reaction mixture. The precipitated TCH is removed from the reaction mixture to leave a mother liquor. Hydrazinium-dithiocarbazinate may then be added to the mother liquor. TCH precipitates and may be readily recovered.