The symbol for sodium chloride is NaCl. Sodium chloride is the chemical name for table salt, which is commonly used in food seasoning and preservation. It is composed of sodium (Na), a soft, silvery-white metal, and chlorine (Cl), a toxic, greenish-yellow gas. When these two elements combine in a 1:1 ratio, they form the ionic compound known as salt. Beyond its culinary uses, sodium chloride plays a vital role in various industrial processes, chemical production, and even in medical applications, such as saline solutions.