脒基硫脲是一种氮肥增效剂。它是白色针状结晶，熔点170℃，其分子量为ll8，分子式为C

2

H

6

N

4

S，结构式为

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。它具有较好的抑制硝化细菌的效能。我所和江西省轻化工业科学研究所协作试制了

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C-脒基硫脲，为同位素示踪残留试验提供了产品。

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C-dicyanodiamide was prepared by the reaction of hydrogen sulfide using isoprepanol as solvent and p-quinone dioxime as catalyst in antoclave on a water-bath at 95

℃

. The product had a yield of 60% with chemical purity of 85%

and radiochemical purity of 92.5%.