Chlorine, New RDA* 800mg.
Sodium chloride occurs naturally as halite, known as rock salt, which is typically 95 to 99% sodium chloride. The principal impurity of rock salt is calcium sulphate, with smaller amounts of calcium chloride and magnesium chloride.
Chlorine is a greenish-yellow, poisonous, gaseous element with a suffocating odour. In the body it is mostly present as sodium chloride or common salt, which performs various essential functions.
*Sourced from EFSA WEBSITE