Barium permanganate

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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)
Hazards
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.

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

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 will precipitate barium sulfate, which is non-toxic, and can be dumped in trash.

References

Relevant Sciencemadness threads