MgCl2, or magnesium chloride, is an inorganic compound made up of magnesium and chlorine. It appears as a white crystalline solid and is highly soluble in water. This compound is commonly used in various applications, including de-icing roads, as a drying agent, and in the production of magnesium metal. In nature, MgCl2 can be found in seawater and mineral deposits. It plays a role in biological processes and is sometimes used in dietary supplements to provide magnesium, an essential nutrient for human health. Its versatility makes it important in both industrial and environmental contexts.