It serves as a precursor for magnesium metal production via electrolysis a coagulant in food processing like tofu making and a component in dust control de-icing and pharmaceutical formulations.

Its primary purposes include treating magnesium deficiency acting as a catalyst and flux in industrial processes and functioning as an electrolyte or supplement in medical and agricultural contexts.

Magnesium chloride is an inorganic ionic compound with the formula MgCl appearing as a white or colorless crystalline solid that is highly hygroscopic and soluble in water.