Magnesium Sulfate, Formula, Chemical Properties, Preparation, Uses

Magnesium Sulfate

Magnesium sulfate is a chemical compound that has the combination of the magnesium and sulfate. It is commonly the magnesium as the cation and sulfate as the anion. It is essential for the nutrients. In the anhydrous form it has consists for the several forms of minerals and is significant to the water. it is soluble in the water and not in the ethanol. The systematic IUPAC name is known as magnesium sulfate. The chemical or molecular formula of magnesium sulfate is MgSO4.

Structural Formula

This is the structural formula of the magnesium sulfate:

Magnesium Sulfate

Chemical Formula

The chemical formula of the magnesium sulfate is MgSO4.

Preparation Method

The magnesium sulfate can be prepared by the reaction between the magnesium carbonate with the sulphuric acid. It is commonly obtained from the natural sources such as lake beds etc. These chemical compounds is used for the manufacturing various agricultural products. It cures the many diseases. It crystallizes the heptahydrate  The chemical reaction is given as follows.

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MgCO3 + H2SO4 → MgSO4 +H2CO3

Physical Properties

Melting point 1124C
Boiling point Decomposes
Molecular weight 120.366g/mol
Density 2.66g/cm3
Solubility in water 26.9g/100mL(0C)
Refractive index 1.523
Crystal structure Monoclinic
Magnetic susceptibility -50×10-6cm3/mol
Appearance White crystalline solid
Solubility Slightly soluble in alcohol, glycerol. Insoluble in acetone.
Odor odourless

Chemical Properties

Magnesium sulfate is a white crystalline solid and odourless chemical compounds. It is insoluble in the acetone and it is soluble in alcohol and glycerol. It is monoclinic in structure. The magnetic susceptibility is very low. It has low density and medium molecular weight. It decomposed at the boiling point.


In medical the magnesium sulfate is used for the treatment of asthma and eclampsia. In agriculture it increase the magnesium and sulfur content in the soil. In food preparation it is used to brewing the salt to manufacturing the beer. The cement is manufactured by using in the construction buildings.

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