硫脲又名硫代脲素,分子式为(NH2)2CS,是白色斜方或针状光亮结晶体。味苦、可燃、相对密度1.046,熔点170~180℃,减压下150~160℃升华。溶于冷水、硫氰酸铵溶液和乙醇,几乎不溶于乙醚。工业上可用三种方法生产硫脲,一是硫代氰酸胺法、二是重氮甲烷法、三是石灰氮法、石灰氮法采用石灰氮和硫化氢气体,在合成釜内进行吸收合成 Thiourea, also known as thiourea, molecular formula (NH2) 2CS, is a white oblique or acicular bright crystals. Bitter, flammable, the relative density of 1.046, the melting point of 170 ~ 180 ℃, decompression under 150 ~ 160 ℃ sublimation. Soluble in cold water, ammonium thiocyanate solution and ethanol, almost insoluble in ether. Thiourea is industrially available in three ways, one is the thiocyanate method, the second is the diazomethane method, the third is the lime nitrogen method, the lime nitrogen method uses lime nitrogen and hydrogen sulfide gas, and the absorption synthesis