The chemical name of common salt is sodium chloride (NaCl).
It is formed by the chemical reaction between hydrochloric acid and sodium hydroxide.
HOW IS COMMON SALT OBTAINED?
Evaporation of sea-water results in the formation of common salt. Rock salt is mined from the underground deposits just like coal.
USES OF COMMON SALT
It is used as a raw material for making a large number of useful chemicals in industry such as: sodium hydroxide (caustic soda), sodium carbonate (washing soda), sodium hydrogencarbonate (baking soda), hydrochloric acid, hydrogen, chlorine, and sodium metal.
It is used in cooking food. It improves the flavor of food.
It is required by our body for the working of nervous system, the movement of muscles, and the production of hydrochloric acid in the stomach for the digestion of food.
It is used as a preservative in pickles, and in curing meat and fish for the preservation of meat and fish).
It is used in the manufacture of soap.
It is used to melt ice which collects on the roads during winter in cold countries