Magnesium chloride is a water-soluble and odourless crystalline white flake. It increases the pH and allows heavy metals to be removed in the water treatment process.
Magnesium chloride is used to treat sewage and industrial effluents. It is used to mitigate wind erosion and stabilise soil, as well as de-icing highways, sidewalks and parking lots. It is used to form metallic magnesium which is added during the aluminium manufacture process to increase its strength.