Widely used as an oxidant in the production of chemicals such as saccharin, vitamin C, isoniazid and benzoic acid; Used as antiseptic, disinfectant, deodorant and antidotes in medicine; In water purification and wastewater treatment, it is used as a water treatment agent to oxidize hydrogen sulfide, phenol, iron, manganese, organic, inorganic and other pollutants to control odor and decolorization. In gas purification, trace sulfur, arsenic, phosphorus, silane, borane and sulfide can be removed. In mining and metallurgy, oxidants for the separation of molybdenum from copper, impurity removal from zinc and cadmium, and the flotation of compounds; It is also used as bleach for special fabrics, waxes, oils and resins, as absorbent for gas masks, as colorant for wood and copper.