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Manganese heptoxide information


Manganese(VII) oxide
Manganese(VII) oxide
Ball-and-stick model of manganese heptoxide
Manganese(VII) oxide
Names
IUPAC name
Manganese(VII) oxide
Other names
Manganic oxide
dimanganese heptoxide
Permanganic anhydride
Permanganic oxide
Identifiers
CAS Number
  • 12057-92-0 checkY
3D model (JSmol)
  • Interactive image
ChemSpider
  • 9944714
ECHA InfoCard 100.031.829 Edit this at Wikidata
EC Number
  • 235-025-8
PubChem CID
  • 13879826
CompTox Dashboard (EPA)
  • DTXSID10894891 Edit this at Wikidata
InChI
  • InChI=1S/2Mn.7O/q;;7*-2
    Key: ZEFXULJEOUCCOQ-UHFFFAOYSA-N
SMILES
  • O=[Mn](=O)(=O)O[Mn](=O)(=O)=O
Properties
Chemical formula
 Mn2O7
Molar mass 221.87 g/mol
Appearance dark red oil (room temp.), green if in contact with sulfuric acid
Density 2.79 g/cm3
Melting point 5.9 °C (42.6 °F; 279.0 K)
Boiling point explodes on heating
Solubility in water
 decomposes to permanganic acid, HMnO4
Structure
Crystal structure
 monoclinic
Coordination geometry
 bitetrahedral
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 explosive, strong oxidizer, very corrosive
GHS labelling:
Pictograms
 GHS01: ExplosiveGHS03: OxidizingGHS05: CorrosiveGHS06: Toxic
Signal word
 Danger
Hazard statements
 H201, H271, H314, H330
Precautionary statements
 P260, P284, P283, P221
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 4: Very short exposure could cause death or major residual injury. E.g. VX gasFlammability 4: Will rapidly or completely vaporize at normal atmospheric pressure and temperature, or is readily dispersed in air and will burn readily. Flash point below 23 °C (73 °F). E.g. propaneInstability 4: Readily capable of detonation or explosive decomposition at normal temperatures and pressures. E.g. nitroglycerinSpecial hazard OX: Oxidizer. E.g. potassium perchlorate
4
4
4
OX
Related compounds
Related compounds
 Re2O7
KMnO4
Tc2O7
Cl2O7
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Manganese(VII) oxide (manganese heptoxide) is an inorganic compound with the formula Mn2O7. Manganese heptoxide is a volatile liquid with an oily consistency. It is a highly reactive and powerful oxidizer that reacts explosively with nearly any organic compound. It was first described in 1860.[1] It is the acid anhydride of permanganic acid.

  1. ^ Aschoff, H. Ann. Phys. Chem. Ser. 2 volume 111 (1860) page 217 and page 224.

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Manganese heptoxide

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Manganese(VII) oxide (manganese heptoxide) is an inorganic compound with the formula Mn2O7. Manganese heptoxide is a volatile liquid with an oily consistency...

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Dichlorine heptoxide

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Dichlorine heptoxide is the chemical compound with the formula Cl2O7. This chlorine oxide is the anhydride of perchloric acid. It is produced by the careful...

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Manganese dioxide

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Manganese dioxide is the inorganic compound with the formula MnO 2. This blackish or brown solid occurs naturally as the mineral pyrolusite, which is...

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GHS hazard pictograms

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Acute toxicity (oral, dermal, inhalation), categories 1, 2, 3 e.g. manganese heptoxide (fire diamond rating at health hazard is 4) GHS06: Toxic   Acute...

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Explosive

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Hydrazoic acid Hypofluorous acid Lead azide Lead styphnate Lead picrate Manganese heptoxide Mercury(II) fulminate Mercury nitride Methyl ethyl ketone peroxide...

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NFPA 704

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decomposition at normal temperatures and pressures (e.g., nitroglycerin, chlorine dioxide, nitrogen triiodide, manganese heptoxide, TNT, Picric acid)...

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Permanganic acid

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permanganates with concentrated sulfuric acid yield the anhydride, manganese heptoxide. Permanganic acid has also been prepared through the reaction of...

Word Count : 391

Acidic oxide

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which reacts with water forming nitric acid: N2O5 + H2O → 2 HNO3 Manganese heptoxide, which reacts with water forming permanganic acid: Mn2O7 + H2O →...

Word Count : 580

Technetium

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to manganese heptoxide. It adopts a centrosymmetric structure with two types of Tc−O bonds with 167 and 184 pm bond lengths. Technetium heptoxide hydrolyzes...

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Potassium permanganate

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metal oxo complex permanganate, in which four O2− ligands are bound to a manganese(VII) center.[citation needed] KMnO4 forms orthorhombic crystals with constants:...

Word Count : 4817

List of inorganic compounds

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fluoride – MnF4 Manganese(IV) oxide (manganese dioxide) – MnO2 Manganese(II,III) oxide – Mn3O4 Manganese dioxide – MnO2 Manganese heptoxide – Mn2O7 Mercury(I)...

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Cadmium permanganate

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Cd(MnO4)2 + BaSO4↓ Cadmium permanganate can also be produced by reacting manganese heptoxide with cadmium oxide or cadmium hydroxide. Cadmium permanganate hexahydrate...

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Ammonium permanganate

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above 140 °F (60 °C). Ammonium permanganate decomposes explosively to manganese dioxide, nitrogen, and water: 2 NH4MnO4 → 2 MnO2 + N2 + 4 H2O Ammonium...

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Barium permanganate

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permanganates with concentrated sulfuric acid yield the anhydride, manganese heptoxide. Lide, David R., ed. (2009). CRC Handbook of Chemistry and Physics...

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Rhenium compounds

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molecular (nonpolymeric) Re2O7. This molecular species closely resembles manganese heptoxide, consisting of a pair of ReO4 tetrahedra that share a vertex, i.e...

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Technetium compounds

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to manganese heptoxide. It adopts a centrosymmetric structure with two types of Tc−O bonds with 167 and 184 pm bond lengths. Technetium heptoxide hydrolyzes...

Word Count : 1492

List of CAS numbers by chemical compound

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trioxide 17496–59–2 Cl2O6 chlorine hexoxide 12442–63–6 Cl2O7 chlorine heptoxide 10294–48–1 CmBr3 curium(III) bromide 14890–42–7 CmCl3 curium(III) chloride...

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Chlorine

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anhydrous hydrogen fluoride does not proceed to completion. Dichlorine heptoxide (Cl2O7) is the anhydride of perchloric acid (HClO4) and can readily be...

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Bohrium

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bohrium(IV). The lighter group 7 elements are known to form volatile heptoxides M2O7 (M = Mn, Tc, Re), so bohrium should also form the volatile oxide...

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Glossary of chemical formulae

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trioxide 17496-59-2 Cl2O6 chlorine hexoxide 12442-63-6 Cl2O7 chlorine heptoxide 10294-48-1 Cl2O8 Chlorine octaoxide CoAl2O4 cobalt(II) aluminate 13820-62-7...

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Iodine

Last Update:

HIO4. Attempting to go further does not result in the nonexistent iodine heptoxide (I2O7), but rather iodine pentoxide and oxygen. Periodic acid may be protonated...

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