permanganate n : a dark purple salt of permanganic acid; in water solution it is used as a disinfectant and antiseptic
A permanganate is the general name for a chemical compound containing the manganate(VII) ion, (MnO4−). Because manganese is in the +7 oxidation state, the manganate(VII) ion is a strong oxidizer.
In an acidic solution, manganate(VII) is reduced to the colourless +2 oxidation state of the Manganese(II) (Mn2+) ion.
In a basic solution, manganate(VII) is either reduced to the brown +4 oxidation state of MnO2 or to the green +6 oxidation state of MnO42−.
ProductionPermanganates may be produced by oxidation of manganese compounds by strong oxidizing agents, for instance, sodium hypochlorite or lead dioxide:
Manganates(VII) are salts of permanganic acid. Manganate(VII) is a strong oxidizer, and similar to perchlorate. It is therefore in common use in qualitative analysis that involves redox reactions(permanganometry).Besides this, it is stable.
It is a useful reagent, though with organic compounds, it may just destroy them entirely.
Manganates(VII) are not very thermically stable. For instance, potassium permanganate decomposes at 230 °C:
See category for a bigger list.
- National Pollutant Inventory - Manganese and compounds Fact Sheet
- Companies that use permanganate to remediate hazardous chemicals:ORIN
permanganate in German: Permanganate
permanganate in Spanish: Permanganato
permanganate in French: Permanganate
permanganate in Italian: Permanganato
permanganate in Japanese: 過マンガン酸塩
permanganate in Dutch: Permanganaat
permanganate in Portuguese: Permanganato