This thesis mainly introduced that ureas and semicarbazides were synthesized by oxidation of corresponding thioureas and thiosemicarbazides using 30% peroxide as oxidant.

主要介绍了以30%浓度的双水作为硫脲、氨基硫脲来制备相的脲和氨基脲类合物。

Using sodium hydrosulphide or sodium thiosulfate as materials,the production cost of TGA is low.While,a high content of TGA can be obtained with thiourea as reactant.

巯基乙酸的合成工艺进行了比较研究,认为硫氢钠法和硫代硫酸钠法生产成低,适宜于选矿用巯基乙酸的生产,而硫脲法可得到较高浓度的巯基乙酸。