Silver permanganate
Chemical compound
From Wikipedia, the free encyclopedia
Silver permanganate is an inorganic compound with the chemical formula AgMnO4. This salt is a purple crystal adopting a monoclinic crystal system.[1] It decomposes when heated or mixed with water, and heating to high temperature may lead to explosion.
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| Names | |
|---|---|
| IUPAC name
Silver(I) permanganate | |
| Systematic IUPAC name
Silver(I) manganate(VII) | |
| Other names
Argentous permanganate | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.029.127 |
| EC Number |
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PubChem CID |
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| UNII | |
CompTox Dashboard (EPA) |
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| Properties | |
| AgMnO4 | |
| Molar mass | 226.804 g/mol |
| Appearance | purple crystals or gray powder |
| Density | 4.27 g/cm3 |
| Melting point | 160 °C (320 °F; 433 K) (decomposes) |
| 0.55 g/100 mL (0 °C) 1.69 g/100 mL (30 °C) | |
| −63.0·10−6 cm3/mol | |
| Structure | |
| monoclinic | |
| Hazards | |
| Occupational safety and health (OHS/OSH): | |
Main hazards |
Eye irritant |
| GHS labelling: | |
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| Warning | |
| H272, H312, H319, H332 | |
| P210, P220, P261, P264, P270, P271, P280, P301+P310, P302+P352, P304+P340, P305+P351+P338, P311, P321, P330, P337+P313, P362+P364, P370+P378, P501 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Production
It can be produced through the reaction of silver nitrate and potassium permanganate:[2]
- AgNO3 + KMnO4 → AgMnO4 + KNO3
Uses
Silver permanganate is an oxidizing agent for carbon monoxide when deposited on metallic oxide carriers.[3] As a result, it was investigated for use in gas masks but was ultimately abandoned due to its expense and it being consumed in the reaction rather than acting as a catalyst.[4]
Related compounds
A caesium silver permanganate with the formula Cs3Ag[MnO4]4 has been characterized.[5]
