What is Manganese Dioxide MnO2 Powder?


Apr 3, 2023 ,

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Introduction to Manganese Dioxide, MnO2 powder Manganese dioxide Also known as black manganese oxide or manganese peroxide, it is also known. It is the oxide tetravalent mannese. It has the chemical formula MnO2. The chemical formula is MnO2. Natural MnO2 is found in pyrolusite. It is a black-brown rhombic crystal, or powder. It is amphoteric and has a trihedral lattice. It is insoluble when dissolved in water and in nitric acid. However, it releases oxygen and forms manganese oxide in hot concentrated sulfuric acids. It is fused to caustic soda and oxidant to give off carbon dioxide, which forms permanganate. Manganese dioxide can cause combustion or explosion by friction or coheating with organic matter, or other oxidable substances, such as sulfur, the sulfide or phosphide. It is easily reduced by strong oxidants, such as hydrogen peroxide. MnO2 can be converted to Mn2O3 by heating it above 480 in the air and Mn3O4 by heating it above 900. It is widely used for steelmaking, glass, ceramics etc.

It can be found in the forms of pyrolusite, hard manganese ore and other natural forms. You can extract it from pyrolusite. You can also prepare it by heating manganese nitrate salt or electrolytic magnese dioxide. g -Mno2 has an active component and can be used for cathodes in batteries to prevent polarization. Manganese dioxide can also be used to remove rust, oxidize, dry battery drying agent, paint drying agent, as well as in manganese salt production and the glass industry.

Manganese Dioxide MnO2 powder – Physical and Chemical Properties
For manganese dioxide Oxygen atoms are located at the corner of the Octahedron, and manganese is in the octahedron. Octahedrons can be linked to form single chains or double chains. This creates a tunnel structure in the gap, hexagonal dense, or square dense accumulation. Oxidizability Manganese dioxide is an organic non-salt, non-amphoteric and non-alkalic non-salt compound that doesn’t react with acids or bases. The presence of reducing agent can cause oxidizing. To make manganese, you can heat hydrogen to 1400K and add manganese dioxide. To produce brown and black manganese oxide, manganese dioxide is heated with ammonia gas stream. Concentrated hydrochloric acid is used to react manganese dioxide with chlorine gas and water.

It can also display oxidation reactions in the presence of strong oxidants. Reductibility . When the potassium carbonate, manganese dioxide and potassium nutra melt together, people can get dark-green melt. After melting it in water cooling, they can get six valences manganese compound potassium magnate. It is a strong acid medium oxidant. Although it does not burn, it is strong oxidant and can be used in an acid medium to aid combustion.
Manganese Dioxide MnO2 Powder Properties
Other names manganese oxide, MnO2 powder
CAS No. 1313-13-9
Formula compound MnO2
Molecular Weight 86.94
Appearance black powder
Melting Point 535degC
Boiling Point N/A
Density 5.03g/cm3
Solubility of H2O Insoluble
Exact Mass 86.9279
Manganese Dioxide MnO2 CAS 1313-13-9

Applications of Manganese Dioxide, MnO2 powder
1. Manganese dioxide is an excellent decolorizing agent for the glass industry. It can oxidize low iron salt to high ferric sodium, making the blue-green glass weaker.
2. It is used to produce magnetic materials made of manganese, zinc ferrite and other metals in the electronic sector.
3. This is used in the manufacture of iron and manganese alloys and as a heating agent for the casting industry.
4. Gas masks that absorb carbon monoxide.
5. It is used in the chemical sector as an oxidant or catalyst for organic synthesizing, paint, or ink desiccant.
6. It is used as an accelerant in the match industry, as well as as a raw ingredient for glaze medicine for ceramics, enamel, manganese salt.
7. It is used for dyeing, water purification and iron removal.
8. An excellent depolarizing agent for batteries is electrolytic manganese oxide. It has a higher discharge capacity than the dry battery made from natural discharge manganese dioxide and a shorter life span. This makes electrolytic manganese a valuable raw material in the battery industry.
9. Because of its strong catalytic and oxidation/reduction, Ion Exchange, and Adsorption capacities, after treatment, molding, electrolytic manganese dioxide is an excellent water purification filter material. It is more effective at removing and decolorizing metals than activated carbon and zeolite.

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