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.

文对巯基乙酸的艺进行了比较研究,认为硫化钠法和硫代硫酸钠法生低,适宜于选矿用巯基乙酸的生,而硫脲法可得到较高浓度的巯基乙酸。