The Alkali Metals - Uses of Compounds .
Sodium chloride is common salt .
It is used in the food industry as a flavouring and as a preservative . It is also mixed with grit and spread on roads to prevent them freezing in cold conditions . Sodium chloride solution can be used to regenerate an ion exchange column . Sodium Carbonate , Na 2 CO 3 . Sodium Hydrogen Carbonate , NaH CO 3 .