Sodium Chloride is a metal halide composed of sodium and chloride with sodium and chloride replacement capabilities. When depleted in the body, sodium must be replaced in order to maintain intracellular osmolarity, nerve conduction, muscle contraction and normal renal function.Sodium chloride is the main component of table salt, with the chemical formula of NaCl. Sodium chloride is the main component of salt in seawater and the most common seasoning. Excessive intake of salt is prone to high blood pressure.