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.

本文对酸的合成工艺进行了比,认为硫氢化法和硫代硫酸法生产成本低,适宜于选矿用酸的生产,而硫脲法可得到高浓度的酸。

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

本文主要介绍了以30%浓度的双氧水作为氧化剂氧化硫脲、氨硫脲来制备相应的脲和氨脲类化合物。