【摘要】 <正> 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118,分子式为C₂H₅N₄S。结构式为NH₂—C—NH—C—NH₂。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 ‖ ‖ NH S所协作试制了¹⁴C-脒基硫脲,为同位素示踪残留试验提供了产品。更多还原

【Abstract】 ¹⁴C-dicyanodiamide was PrePared by the reaction of hydrogen sulfide using iso-Prepanol as solvent andP-quinone dioxime as catalyst in antoclave on a water一bath at95”C .The Product had a yield of 60%with chemical Purity of 85%，and radiochemicalpurity of 92.5%.更多还原