From the Research
One gram of Magnesium Sulfate (MgSO4) contains approximately 0.20 grams of elemental magnesium. This calculation is based on the molecular weights of the compounds involved. Magnesium Sulfate has a molecular weight of about 120.4 g/mol, while elemental magnesium has an atomic weight of 24.3 g/mol. Since there is one magnesium atom in each molecule of MgSO4, the proportion of magnesium by weight is 24.3/120.4, which equals about 20%. This means that for every gram of magnesium sulfate, approximately one-fifth of that weight is actual elemental magnesium. The most recent study 1 does not provide information on the molecular weight of MgSO4, but it discusses the importance of maintaining total serum magnesium concentration above 2.0 mg/dL. However, the calculation of elemental magnesium in MgSO4 is based on the molecular weights of the compounds involved, which is not affected by the studies on serum magnesium levels. Different magnesium salts (like magnesium citrate or magnesium oxide) would contain different proportions of elemental magnesium due to their different molecular weights. The studies provided 2, 3, 4, 5 discuss various aspects of magnesium and its use in medical treatments, but they do not provide information that would change the calculation of elemental magnesium in MgSO4. Therefore, the amount of elemental magnesium in 1 gram of MgSO4 remains approximately 0.20 grams, as calculated based on the molecular weights of the compounds involved.