MgBr2

Magnesium bromide is an ionic compound with the chemical formula MgBr2. It is an inorganic salt composed of one magnesium cation (Mg2+) and two bromide anions (Br-). Magnesium bromide typically exists as a white crystalline solid. It is soluble in water, forming a neutral solution. The solubility of MgBr2 in water is relatively high. It can also be soluble in some polar organic solvents.

This compound is hygroscopic, meaning it readily absorbs moisture from the atmosphere. When heated, magnesium bromide can decompose. It is an important source of bromide ions and is used in various chemical applications. For instance, it finds use as a catalyst in organic synthesis and as a component in some pharmaceutical preparations. It can be synthesized through the reaction of magnesium metal with bromine or through the reaction of magnesium oxide with hydrobromic acid. The molten salt can be electrolyzed to produce magnesium metal and bromine gas.