Sodium Chloride is an ionic compound with the chemical formula NaCl. Since sodium chloride is not a molecule it has an empirical formula, not a molecular formula. Like all other salts, sodium chloride consists of a typical arrangement of anions and cations next to each other. There is no limit on how large this salt can be and there is no definite “end” of the lattice. There is a chloride ion for each sodium ion. The empirical formula of sodium chloride is (Na+Cl–)n.