Sodium chloride is colorless cubic crystals or white crystalline powder, odorless and salty, serving as the main component of table salt. Its aqueous solution is neutral, with slight deliquescence in air and good stability.

1. Chemical raw material: Used in the production of caustic soda, soda ash, chlorine and sodium metal, serving as the core raw material for the chlor-alkali industry.
2. Food industry: Used for seasoning, food preservation and pickling processing.
3. Medical field: Used to prepare normal saline for fluid replacement, wound irrigation and electrolyte balance regulation.
4. Other industries: Metallurgy (ore smelting), leather, soap, freezing, printing and dyeing, road de-icing, analytical reagents and biological medium preparation.