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较研究,认为硫化钠法和硫代硫酸钠法生产成本低,适矿用酸的生产,而硫脲法可得到较高浓度的酸。