1317-34-6[Mn+3].[Mn+3].[O-2].[O-2].[O-2]TYTHZVVGVFAQHF-UHFFFAOYSA-N1317-34-6DTXSID90893847Sicherheitsangaben dienen nur zur Orientierung und ersetzen weder das Sicherheitsdatenblatt (SDB) des Lieferanten noch geltende Vorschriften oder eine fachliche Bewertung.
VerwendenManganese(III) oxide is used to produce ceramic magnets and semiconductors. Further, it serves as a precursor to lithium manganese oxide. In addition to this, it acts as a useful battery cathode.
synthetischeAnhydrous manganese(III) oxide is found as the mineral braunite, Mn2O3, while a hydrated form, Mn2O3.H2O, which is chemically more reactive, occurs as manganite. Manganese forms both anions and cations in oxidation state +3. Simple salts of tervalent manganese are not stable. However, complexes are more stable, the hexacyanomanganates(III) being an example: K3Mn(CN)6 is a red crystalline solid, isomorphous with potassium hexacyanoferrate(III) and slowly hydrolysed. Manganese(III) oxide is formed as a grey solid by heating manganese(IV) oxide to 700°C for several hours: 4MnO2 ---> 2Mn203 + O2 It is converted into trimanganese tetroxide when heated above 940°C in air or reduced by hydrogen above 230°C. Hot concentrated hydrochloric acid is oxidized to chlorine by manganese(III) oxide: Mn203 (s) + 6H + + 2e- ==2Mn2+ + 3H2O Mn203 (s) + 6H + + 2Cl- ---> 2Mn2+ + 3H2O + Cl2
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DefinitionIn nature as manganite, a manganese ore.