As a fine chemical product, p-toluenesulfonyl chloride (TsCl) is widely used in dyes, medicine and pesticide industries. In the dye industry, it is mainly used to manufacture dispersion, ice dyeing, acid dye intermediates; In the pharmaceutical industry, it is mainly used for the production of sulfonChemicalbook amine drugs, methanesulfuron, etc.; The pesticide industry is mainly used for methanesulfonone, sulfonone, jingji frost and so on. With the continuous development of dyes, medicine and pesticide industries, the international demand for this product is increasing, especially in Europe and the United States, and the market prospect is broad.