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manganate
manganate Chem. (ˈmæŋgənət) [f. mangan-ic + -ate.] A salt of manganic acid.1839 Penny Cycl. XIV. 382/2 Manganate of potash is easily prepared. 1891 Thorpe Dict. Appl. Chem. II. 500/1 All manganates..oxidise hydrochloric acid.
Oxford English Dictionary
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Manganate
Other manganates include hypomanganate or manganate(V), , permanganate or manganate(VII), , and the dimanganate or dimanganate(III) . Barium manganate has also been used to oxidize hydrazones to diazo compounds.
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Barium manganate
Barium manganate is isomorphous with BaCrO4 and BaSO4. Barium manganate can appear as a dark blue or green to black crystals. Preparation
Barium manganate can be prepared from potassium manganate and barium chloride by salt metathesis to give insoluble barium manganate:
Uses
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manganesate
† mangaˈnesate Chem. Obs. [f. manganesic + -ate.] = manganate.1819 Brande Man. Chem. 228 Manganesate of potassa.
Oxford English Dictionary
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Potassium manganate
Potassium manganate is the inorganic compound with the formula . manganate/manganate(VII) pair to be referred to as a chemical chameleon.
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manganesic
† mangaˈnesic, a. Obs. [f. manganese + -ic.] manganesic acid = manganic acid. Similarly mangaˈnesiate, = manganate; mangaˈnes(e)ous manganeseous acid, manganous acid; mangaˈnesite, manganite.1819 Brande Man. Chem. 226 Manganesic acid. 1823 Henry Elem. Chem. (ed. 9) II. 10 The proportions being 100 m...
Oxford English Dictionary
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Sodium manganate
Sodium manganate is the inorganic compound with the formula Na2Mn O4. Sodium manganate is rare because it cannot be readily prepared from the oxidation of manganese dioxide and sodium hydroxide.
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Permanganate
A permanganate () is a chemical compound with the manganate(VII) ion, , the conjugate base of permanganic acid. For instance, potassium permanganate decomposes at 230 °C to potassium manganate and manganese dioxide, releasing oxygen gas:
2 KMnO4 → K2MnO4 + MnO2
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Hypomanganate
Structure and properties
Manganate(V) is a tetrahedral oxyanion structurally similar to sulfate, manganate, and permanganate. See also
Dimanganite, a manganate(III) anion
Manganate or manganate(VI),
Permanganate or manganate(VII),
References
Manganese(V) compounds
Transition
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Condy's fluid
Condy's fluid [Name of Henry Bollmann Condy, 19th-c. English manufacturer of chemicals.] A strong solution of sodium manganate or permanganate, used as a disinfectant. Also (colloq.) Condy.1857 J. Griffiths in H. B. Condy Disinfection (1862) 37, I have fairly tested the efficacy of ‘Condy's Disinfec...
Oxford English Dictionary
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Psilomelane
It is sometimes considered to be a hydrous manganese manganate, but of doubtful composition.
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Caesium permanganate
Chemical
Similar to potassium permanganate, the two-step decomposition of caesium permanganate leads to the formation of caesium manganate intermediates
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Barium permanganate
Preparation
Barium permanganate may be produced by disproportionation of barium manganate in a mildly acidic solution, including solutions carbon dioxide Preparations relying on aqueous reactions of barium manganate are extremely slow process due to the low solubility of the manganate.
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is potassium permanganate an organic compound
Potassium manganate is the inorganic compound with the formula K2MnO4.
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Sodium permanganate
Preparation and properties
Sodium permanganate cannot be prepared analogously to the route to KMnO4 because the required intermediate manganate salt,
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