Manganese(II) sulfate

This pale pink deliquescent solid is a commercially significant manganese(II) salt.

All of these salts dissolve in water to give faintly pink solutions of the aquo complex [Mn(H2O)6]2+.

The tetrahydrate also features Mn(II) in an O6 coordination sphere provided by bridging two sulfate anions and four aquo ligands.

In the laboratory, manganese sulfate can be made by treating manganese dioxide with sulfur dioxide:[4] It can also be made by mixing potassium permanganate with sodium hydrogen sulfate and hydrogen peroxide.

[1] Manganese(II) sulfate minerals are very rare in nature and always occur as hydrates.

NFPA 704 four-colored diamond Health 1: Exposure would cause irritation but only minor residual injury. E.g. turpentine Flammability 0: Will not burn. E.g. water Instability 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g. calcium Special hazards (white): no code
Coordination sphere for Mn and S in the monohydrate. The O 6 coordination sphere is provided by four separate sulfate groups and a pair of mutually trans bridging aquo ligands . [ 2 ]