Manganese dioxide is an inorganic compound, CAS: 1313-13-9, the chemical formula is MnO2. Physical properties: black amorphous powder or black orthorhombic crystal, insoluble in water, weak acid, weak base, nitric acid, cold sulfuric acid, soluble in concentrated hydrochloric acid under heating to produce chlorine gas. Chemical properties: Manganese dioxide is an amphoteric oxide. It is a very stable black powdery solid at room temperature and can be used as a depolarizer for dry batteries. It is a strong oxidizing agent in acid medium.
The main application:
Use in organic synthesis: used as depolarizer for dry batteries, catalyst and oxidant in synthetic industry, colorant, decolorizer, iron remover in glass industry and enamel industry, etc. It is used in the manufacture of metal manganese, special alloys, ferromanganese castings, gas masks and electronic materials such as ferrite. In addition, it can also be used in the rubber industry to increase the viscosity of rubber.
Laboratory use: used as a catalyst when hydrogen peroxide is decomposed to produce oxygen; as a catalyst when potassium chlorate is heated to decompose to produce oxygen; it undergoes thermite reaction with simple aluminum powder to produce manganese.
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