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What is it?

Mn2O3 Pulver

Manganese oxide trioxide, a compound with the chemical formula Mn2O3, and a molecularweight of 157.88, is an oxide. Black cubic crystals. Relative densities 4.50 Water, acetic acid, and ammonium chloride solution are insoluble. It is also insoluble in other inorganic acid. Cold hydrochloric acid is used to dissolve the substance to form a brown solution. Hot dilute sulfuric or concentrated sulfuric acids are used to create a red solution. The solution then undergoes decomposition into MnO2 & manganese Nitrate in hot acid. When heated, it becomes Mn3O4 and releases O2. There are two versions of this compound: a–Mn2O3 (or g–Mn2O3). The a-type is made by decomposing nitrate carbonate or chloride of divalent Manganese in air and heating to 600800. The g type is made by heating MnO2 in vacuum at 50 for 78 hours. Or by g–MnO (OH). It can be used for the printing and dyeing processes of cloth, as well as in the oxidation process carbon monoxide, organic compounds and nitrate.

The characteristics of Mn2O3 Pulver

Manganese Trioxide is a black cubic crystalline, insoluble and insoluble in water, Acetic Acid, and Ammonium Chloride Solution. It is also soluble with other inorganic acid. When heated to 1080, it becomes Mn3O4 (and O2) It is dissolvable in cold hydrochloric to a brown solution. In Chemicalbook hot dilute or concentrated sulfuric acids, it can be made into a solution that is reddish in color. When heated, it will decompose into Mn3O4 (and O2) and manganese-nitrate in hot acid. It comes in two forms, a–Mn2O3 (g-Mn2O3) and g–Mn2O3.

Manganese Oxide Mn2O3 Powder Properties

Other Titles
Manganese oxide, Manganese(3+) oxide, Manganese sesquioxide,

Dimanganese trioxide, Keto-(ketomanganiooxy)manganese,

Manganese(3+) oxide, Manganese trioxide,

Oxo-(oxomanganiooxy) manganese


Combination Formula

Molecular Weight

Black Solid

Melting Point
940 degC (1724 degF)

Solubility of in water

4.5 g/cm3


Particle size

Boling Point

Specific heat

Thermal Conductivity

Thermal Expansion

Young’s Modulus



Manganese Oxide Mn2O3 CAS 1317-34-6

The preparation of Mn2O3 Pulver

1. A-Mn2O3a can be prepared by further oxidation/reduction of manganese oxides or by heating divalent Manganese salts in air at 600-800degC. To heat manganese nuitrate hexahydrate, or pure b–MnO2, to constant weight at 65°C in air is the easiest. Manganese nitrate-hexahydrate is used as the raw material. It must be heated to 190°C to create a solid substance. Pulverization can then be done at 650°C.

2. Preparation to g–Mn2O3In 350mL the solution, in which 2.2g Manganese Sulfate Tetrahydrate was dispersed, vigorous stirring was used. Next, 34mL dropwise of 3% Hydrogen Peroxide Solution was added, followed by 50mLs of 0.2mol*dm-3 Ammonia Water to create g–MnO(OH). To make the suspension that emits oxygen darken or black, heat for 4 minutes. Then filter and separate the solid. For gMn2O3, the gMnO(OH) was meticulously dehydrated at 250°C for 3 days. You can also prepare g–MnO2 by heating it at 500 degrees Celsius for 78h under less pressure.

Use of Mn2O3 Pulver

1. Mn2O3 can be used for a variety of purposes and is suitable for use in the dyeing and printing of fabrics.

2. It can catalyze the oxidation organic pollutants and of nitrogen oxides.

3. It can be used as a precursor to soft magnetic material.

4. Used as a raw ingredient in the production of lithium ion battery electrode materials.

5. It is the primary and intermediate product of the manganese compound.

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