CH3COO2Mg

Magnesium acetate dihydrate, with the chemical formula CH3COOMg(H2O)2, is a salt formed from magnesium and acetic acid. It is commonly encountered as the dihydrate, though anhydrous forms also exist. This compound typically appears as white crystals or a granular powder. It is soluble in water and slightly soluble in ethanol. Magnesium acetate dihydrate is hygroscopic, meaning it readily absorbs moisture from the air.

In terms of its properties, magnesium acetate dihydrate is a neutral salt. It is relatively stable under normal conditions. When heated, it first loses its water of crystallization. Further heating leads to decomposition into magnesium oxide, acetone, and carbon dioxide.

Magnesium acetate has found applications in various fields. It has been used as a mordant in dyeing textiles, helping to fix dyes to fabrics. It also serves as a catalyst in certain organic synthesis reactions. In laboratory settings, it can be used as a source of magnesium ions. Historically, it has also been explored for potential medicinal uses, though its widespread use in this area is not common. The compound is generally considered to have low toxicity, but direct contact with skin or eyes should be avoided.