Magnesium Chloride, Formula, Preparation Method, Chemical Properties

Magnesium Chloride

Magnesium chloride is the chemical compound and contains the typical iconic halides that can be highly soluble in water. It can be obtained from the brine or sea water. It is the most abundant mineral and highly content the ancient seabeds. These magnesium metal contributes the 25.5% elemental. The anhydrous is the most priority metal to produce the magnesium metal. The systematic IUPAC name is known as magnesium chloride. The chemical or molecular formula of magnesium chloride is MgCl2. It is also known as the magnesium dichloride.

Structural Formula

This is the structural formula of the magnesium chloride:

Magnesium Chloride

Chemical Formula

The chemical formula of the magnesium chloride is MgCl2.

Preparation Method

By using the dow process the magnesium chloride is produced by treating the solution of magnesium hydroxide and hydrochloric acid.

Mg(OH)2 + 2HCl → MgCl2 + 2H2O

It crystallizes the cadmium chloride at the high temperatures upto 300oC. by heating the chloride salt it can produced the anhydrous with the hexamine complex to coordinate with the six water ligands. It is required to the absence of the metal by the direct electrolysis with the magnesium metal.

Learn More:   Potassium Chromate, Formula, Chemical Properties, Preparation, Uses

Physical Properties

Melting point 714C
Boiling point 1412C
Molecular weight 95.211g/mol
Density 2.32g/cm3
Solubility in water 7.26mg/L
Refractive index 1.675
Crystal structure CdCl2
Magnetic susceptibility -47.4×10-6cm3/mol
Appearance White or colourless crystalline solid


Chemical Properties

It has contains the high thermal power to heat the solution attains the maximum energy. It has the non inflammable substance. It is capable of an accepting electron pair from the other minerals because it has lewis base. It produces the performance of all the minerals with the effective and contributes to the large industrical scales.


Magnesium chloride used as magnesium metals. It is mostly in fire extinguishers and food additive. It is flocculating agent. It is also a catalyst. It is widely used in paper manufacturing. Magnesium chloride is used in stabilization, dust control and wind erosion. It is used as lubrication of thread.


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