Sal is a common name for salt, a mineral composed mainly of sodium chloride (NaCl). It is essential for human health, playing a crucial role in maintaining fluid balance, nerve function, and muscle contraction. Salt is naturally found in seawater and can also be mined from salt deposits. In addition to its dietary importance, sal is widely used in cooking and food preservation. It enhances flavor and acts as a preservative by inhibiting the growth of bacteria. Beyond the kitchen, salt has various industrial applications, including in the production of chemicals and de-icing roads in winter.