Magnesium acetate

Anhydrous magnesium acetate has the chemical formula Mg(C2H3O2)2 and in its hydrated form, magnesium acetate tetrahydrate, it has the chemical formula Mg(CH3COO)2 • 4H2O. In this compound magnesium has an oxidation state of 2+. Magnesium acetate is the magnesium salt of acetic acid. It is deliquescent and upon heating, it decomposes to form magnesium oxide. Magnesium acetate is commonly used as a source of magnesium in biological reactions.

Magnesium acetate
Names
IUPAC name
Magnesium acetate
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.005.050
UNII
  • InChI=1S/2C2H4O2.Mg/c2*1-2(3)4;/h2*1H3,(H,3,4);/q;;+2/p-2 N
    Key: UEGPKNKPLBYCNK-UHFFFAOYSA-L N
  • InChI=1/2C2H4O2.Mg/c2*1-2(3)4;/h2*1H3,(H,3,4);/q;;+2/p-2
    Key: UEGPKNKPLBYCNK-NUQVWONBAP
  • CC(=O)O[Mg]OC(=O)C
  • [Mg+2].[O-]C(=O)C.[O-]C(=O)C
Properties
Mg(CH3COO)2
Molar mass 142.394 (anhydrous) 214.455 (tetrahydrate)
Appearance White hygroscopic crystals
Density 1.45 g/cm3 (tetrahydrate)
Melting point 80 °C (176 °F; 353 K) (tetrahydrate)
Soluble
−116.0·10−6 cm3/mol (+4 H2O
Related compounds
Other cations
 Calcium acetate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
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