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How much do you know about manganese dioxide?

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Update time : 2021-12-15 09:45:03
What is Manganese dioxide?
Manganese dioxide is an inorganic compound with the chemical formula MnO2, which exists in the form of pyrolusite in nature. Physical properties: black amorphous powder, or black orthorhombic crystals. Solubility: hardly soluble in water, weak acid, weak base, nitric acid, cold sulfuric acid, pulverize concentrated hydrochloric acid under heating to produce chlorine. Manganese dioxide can be used in the preparation of manganese salt, also can be used as an oxidant, rust remover, catalyst.
Is there any other name for manganese dioxide?
Manganese dioxide. Manganese(IV) oxide. Other names. Pyrolusite, hyperoxide of manganese, black oxide of manganese, manganic oxide.
Why is MnO2 not a peroxide?
Peroxides contain two oxygens connected by a single bond. X-ray or neutron diffraction will show that the oxygens in MnO2 are too far apart to be bonded, and therefore it is not a peroxide.
Peroxide is well known as a ligand to transition metals (though whether it is better described as peroxide or superoxide is sometimes not always clear, e.g. in some cobalt species). An example that you might come across in the lab is chromium(VI) oxide peroxide, CrO5.
What are the properties of manganese dioxide?
Physical properties: black amorphous powder, or black rhombic crystals. Solubility: Difficult to dissolve in water, weak acid, weak base, nitric acid, cold sulfuric acid, and dissolve in concentrated hydrochloric acid under heating to produce chlorine gas.
Chemical properties: Manganese dioxide is an amphoteric oxide. There is a corresponding salt in the form of a perovskite structure such as BaMnO3 or SrMnO3 (obtained by a compound reaction in a molten alkali system). There is also manganese tetrachloride.
Manganese dioxide applications
Manganese dioxide can be used in Ceramic Industries for making glass practically all the raw materials used in glass contain some iron, usually in the form of ferric oxide.
Ores of manganese are not ‘active’ for direct use in dry cell manufacture and many of them need to be activated by physical or chemical treatment.
Manganese dioxide can be used in glassmaking to remove the green tint caused by iron impurities.
Manganese dioxide can be used as an important component in batteries. The Leclanche cell the positive electrode carbon is surrounded by manganese dioxide and carbon.
Is manganese dioxide harmful to humans?
Harmful if inhaled or swallowed. May cause eye, skin, and respiratory tract irritation. May cause central nervous system effects. Inhalation of fumes may cause metal-fume fever.
Manganese dioxide Supplier
TRUNNANO (aka. Luoyang Tongrun Nano Technology Co. Ltd.) is a trusted global chemical material supplier & manufacturer with over 12 years of experience in providing super high-quality chemicals and Nanomaterials. Currently, our company has successfully developed a series of materials. Manganese dioxide produced by our company is of high purity and good quality. Send us an email or click on the needed products to send an inquiry.
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