Parameters of salt Calcium as Ca ++ < 0.05% Magnesium as Mg ++ < 0.03% Sulphate as SO4 < 0.14% Matter Insoluble in water < 0.08% Moisture Content < 2.5 % Purity as NaCl > 99.5% (on dry basis) Salt can easily be called the elixir of life and the basic raw material for the Chemical Industry. It has more than 14000 uses and 120 nations produce salt. Salt is the basic raw material for Chemicals and other Industries like Soda Ash, Caustic Soda, Chlorine, Paper, Plastic, Glass, Polyster, Fertilizers, Detergents, Textile Dyeing, Food preservation etc.