Used as a dust suppressant on roads and construction sites due to its hygroscopic nature, which helps retain moisture and reduce airborne particles. Commonly applied in the production of magnesium metal through electrolysis. Serves as a coagulant in the preparation of tofu from soy milk, helping to solidify the protein. Utilized in medicine as a source of magnesium ions for treating magnesium deficiency. Employed in agriculture as a fertilizer supplement for magnesium-deficient soils, supporting chlorophyll production in plants. Also used in various industrial processes, including textile and paper manufacturing, and in the preparation of fireproofing agents.