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Sodium manganate Properties Molecular formula MnNa2O4 Molar mass 164.92 g mol−1 Appearance deep green solid  Y(what is this?)  (verify) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox references Sodium manganate is the inorganic compound with the formula Na2MnO4. This is a deep green solid is rarely encountered analogue of the related salt K2MnO4. Sodium manganate is rarely encountered because it cannot be readily prepared from by the oxidation of manganese dioxide and sodium hydroxide. Instead this oxidation stops at the level of Na3MnO4, and this Mn(V) salt is unstable in solution.[1] Sodium manganate can be produced by reduction of sodium permanganate under basic conditions. 4 NaOH + 4NaMnO4 → 4 Na2MnO4 + 2 H2O + O2 Because Na3MnO4 is difficult to prepare, sodium permanganate is more expensive than potassium permanganate. References ^ Arno H. Reidies, “Manganese Compounds” in Ullmann's Encyclopedia of Industrial Chemistry, 2002, Wiley-VCH, Weinheim. doi:10.1002/14356007.a16_123 v · d · eSodium compounds NaAlO2 · NaBH3(CN) · NaBH4 · NaBr · NaBrO3 · NaCH3COO · NaCN · NaC6H5CO2 · NaC6H4(OH)CO2 · NaCl · NaClO · NaClO2 · NaClO3 · NaClO4 · NaF · NaH · NaHCO3 · NaHSO3 · NaHSO4 · NaI · NaIO3 · NaIO4 · NaMnO4 · NaNH2 · NaNO2 · NaNO3 · NaN3 · NaOH · NaO2 · NaPO2H2 · NaReO4 · NaSCN · NaSH · NaTcO4 · NaVO3 · Na2CO3 · Na2C2O4 · Na2CrO4 · Na2Cr2O7 · Na2MnO4 · Na2MoO4 · Na2O · Na2O2 · Na2O(UO3)2 · Na2S · Na2SO3 · Na2SO4 · Na2S2O3 · Na2S2O4 · Na2S2O5 · Na2S2O6 · Na2S2O7 · Na2S2O8 · Na2Se · Na2SeO3 · Na2SeO4 · Na2SiO3 · Na2Te · Na2TeO3 · Na2Ti3O7 · Na2U2O7 · NaWO4 · Na2Zn(OH)4 · Na3N · Na3P · Na3VO4 · Na4Fe(CN)6 · Na5P3O10 · NaBiO3 v · d · e  Manganese compounds KMnO4  · Mn(NO3)2  · MnO · Mn3O4 · Mn2O3 · MnO2 · Mn2O7  · MnS · MnSO4 · MnSe2 · MnF3 · MnF4 · MnCl2 · MnBr2 · MnCO3 · Na2MnO4 · NaMnO4 This inorganic compound-related article is a stub. You can help Wikipedia by expanding it.v · d · e