thioureas

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%浓度的双水作为剂脲、氨脲来制备相应的脲和氨脲类合物。

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.

本文对巯乙的合成工艺进行了比较研究,认为氢法和代法生产成本低,适宜于选矿用巯乙的生产,而脲法可得到较高浓度的巯乙。