“Salt” is the colloquial term for the chemical compound sodium chloride (NaCl). It is principally obtained by evaporation of saline seawater collected in large ponds or of water from salt lakes in hot countries. This salt is also called sea salt. Salt has a solid, crystalline structure and is very hygroscopic. It attacks metals when combined with moisture. If allowed to absorb too much water vapor, salt begins to flow. If the water vapor is released again, lumps form. To ensure this appropriate additives are added. This ensure that end product remains “Free Flow”. Iodised salt is mainly used, among other things, as cooking salt or table salt, as a seasoning for human consumption,curing salt, for salt meat and fish, etc.