Synthesis of Manganese Bromide

Solid manganese carbonate is slowly added to a stoichiometric amount of aqueous hydrobromic acid. The solution is then poured into an evaporation dish and heated on a hot plate to remove most of the water, further dried with a vacuum desiccator. The pure product is obtained as a tetrahydrate and it is stored in an inert atmosphere.

MnCO3 + 2 HBr = MnBr2 + CO2 + H2O

MnBr2 + 4 H2O = MnBr2 · 4H2O


The reactants

Addition of the carbonate

The solution after complete addition

Evaporation of the water

Further removal of the water

The product

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