Barium permanganate
| Names | |
|---|---|
| IUPAC name
Barium permanganate
| |
| Other names
Barium manganate(VII)
| |
| Properties | |
| Ba(MnO4)2 | |
| Molar mass | 375.198 g/mol |
| Appearance | Dark violet-brown crystals |
| Odor | Odorless |
| Density | 3.77 g/cm3 (20 °C) |
| Melting point | 200 °C (392 °F; 473 K) Decomposes |
| Boiling point | Decomposes |
| 62.5 g/100 ml (20 °C) | |
| Solubility | Reacts with alcohols |
| Vapor pressure | ~0 mmHg |
| Hazards | |
| Safety data sheet | HiMedia |
| Flash point | Non-flammable |
| Related compounds | |
| Related compounds
|
Barium manganate |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Barium permanganate is a chemical compound, with the formula Ba(MnO4)2. It is often used to prepare more exotic permangante salts, by double displacement reaction with their sulfate salt.
Contents
[hide]Properties
Chemical
Addition of sulfuric acid to barium permangante will produce permanganic acid and even manganese heptoxide if the acid is concentrated enough.
Physical
Barium permangante is a dark purple or purple-brown solid, soluble in water.
Availability
Barium permanganate is sold by various lab suppliers.
Preparation
Barium permanganate may be produced by disproportionation of barium manganate in a mildly acidic solution.
Preparations relying on aqueous reactions of barium manganate are extremely slow process due to the low solubility of the manganate.
Projects
- Make permanganic acid
- Make ammonium permanganate
- Make exotic and unusual permanganates
Handling
Safety
Barium permanganate is corrosive and a strong oxidizer. Avoid contact with combustible materials and acids.
Storage
Barium permanganate should be kept in PE or glass containers, with a good lid.
Disposal
Addition of hydrogen peroxide will cause it to break down to manganese dioxide and barium oxide/hydroxide. Addition of sulfuric acid or a source of sulfate will precipitate barium sulfate, which is non-toxic, and can be dumped in trash.
