Magnesium chloride (MgCl2) is an inorganic salt composed of magnesium and chlorine. It is highly soluble in water, making it useful in various applications, including food processing, where it acts as a firming agent and a source of magnesium. It is also used in de-icing roads and as a drying agent in industrial processes. In culinary contexts, it can enhance the flavor of foods and is sometimes used in tofu production to coagulate soy milk. Magnesium is an essential mineral for human health, playing a crucial role in numerous biochemical reactions, including muscle function and nerve transmission. The compound is typically obtained from seawater or brine and can exist in various hydrated forms.