Used in agriculture as a foliar spray to correct magnesium deficiency in plants, improving chlorophyll production and overall crop health. Commonly applied in horticulture and farming for crops like tomatoes, potatoes, and citrus. Also utilized in medicine as an oral rehydration solution component and in pharmaceutical formulations to treat magnesium deficiency in humans. In industry, serves as a precursor in the production of magnesium-based chemicals and in water treatment processes.