thioureas

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

文主要介绍了以30%浓度的双为化剂化硫脲、氨硫脲来制备相应的脲和氨脲类化合物。

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.

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