The heptanal butyl mercaptal was synthesized with heptanal, sodium thiosuifate and 1bromobutane as raw materials.

正庚醛、代和溴代正丁烷为原料,合成了正庚醛正丁醇缩醛。

With sodium hyposulphite standard solution used in titration and starch developing agent as indicator,iron content can be determined.

代标准溶液漓定,淀粉显色为指,测定铁含量。

After comparison,sodium hyposulfite is the preferred absorbent,which the resultant has no influence on the environment with sodium hyposulfite over absorbed dose.

经比较,代吸收量大,生成物对环境没有影响,为首选吸收。

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.

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