Magnesium chloride (MgCl₂) is an inorganic compound with the CAS number 7786-30-3. It is a white crystalline solid, highly soluble in water, and commonly used in various industries. In de-icing and dust control, it is applied to roads and runways. It also serves as a coagulant in tofu production, a supplement for magnesium deficiency, and a component in fire extinguishers. Additionally, it is used in the production of magnesium metal, textiles, and paper. Its hygroscopic nature makes it effective in humidity control. Magnesium chloride is valued for its versatility and cost-effectiveness in industrial and commercial applications.