What is Magnesium Bicarbonate?
Magnesium Bicarbonate is an unstable compound of magnesium in solid state with the formula Mg(HCO3)2, it exists only in solutions. It exists only in solution and is formed by the action of water containing free carbon dioxide on magnesite, dolomite, dolomitic limestone and other minerals containing magnesium carbonate. It causes temporary hardness in water and on heating it easily decomposes back to carbonate.
IUPAC name – Magnesium hydrogen carbonate
|Molecular Weight/ Molar Mass||146.3387|
|Boiling Point||333.6 °C at 760 mmHg|
Magnesium Bicarbonate Structure – Mg(HCO3)2
Physical Properties of Magnesium Bicarbonate – Mg(HCO3)2
|Appearance||Found only in liquid form|
|Monoisotopic Mass||145.97 g/mol|
|Solubility||Soluble in water to 5.7 g / 100 mL at 20oC|
Chemical Properties of Magnesium Bicarbonate – Mg(HCO3)2
- Magnesium Bicarbonate undergoes decomposition forming magnesium carbonate, water and free carbon dioxide.
Mg(HCO3)2 → MgCO3 + H2O + CO2
Uses of Magnesium Bicarbonate – Mg(HCO3)2
- Used as an antacids decrease hyperacidity in conditions such as peptic ulcer disease, reflux esophagitis, gastritis and hiatal hernia.
- Used to treat patients with renal insufficiency and should be given cautiously during pregnancy and breastfeeding.