In the dye industry, sulfur dyes are used as raw materials for the production of sulfur blue and sulfur blue. Used in the printing and dyeing industry as a dyeing aid for dissolving sulfide dyes. In the leather industry, it is used for hydrolysis to remove hair from raw hides, and is also used to prepare sodium polysulfide to accelerate the soaking and softening of dry hides. Chemicalbook is used as a cooking agent for paper in the papermaking industry. The textile industry is used as a mordant for denitration of artificial fibers and reduction of nitrates, as well as for dyeing cotton fabrics. The pharmaceutical industry is used to produce antipyretic drugs such as phenacetin. In addition, it is also used to produce sodium thiosulfate, sodium hydrosulfide, sodium polysulfide, etc.