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[Chemical Knowledge]：Properties and Uses of Sodium Chloride

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Sodium chloride, also known as table salt, is an inorganic compound widely used in the field of chemical production raw materials. Its chemical formula is NaCl, which is composed of chloride and sodium ions. Sodium chloride has a variety of properties and uses, which are discussed in detail below.

1. the properties of sodium chloride

1. Physical properties: Sodium chloride is a white crystalline powder with a high melting point (801 ℃) and boiling point (1465 ℃). It is readily soluble in water, and the solubility increases with increasing temperature. In addition, sodium chloride also has good thermal stability and conductivity.
2. Chemical properties: Sodium chloride has high chemical stability and is not easy to react with other substances. However, at high temperatures, sodium chloride can react with certain metal oxides to form chlorine and metallic sodium. In addition, sodium chloride can also ionize chloride and sodium ions in water, so it can be used for electrolytic preparation of chlorine and metal sodium.

2. the use of sodium chloride

in the field of chemical production raw materials, sodium chloride has a wide range of uses, mainly including the following aspects:

1. electrolyte: sodium chloride can be used as an electrolyte for batteries, electrolytic cells and other electrochemical equipment. In aqueous solution, sodium chloride can ionize chloride ions and sodium ions, has good conductivity, and can improve the energy efficiency and service life of the equipment.
2. chemical raw materials: sodium chloride can be used as raw materials for the production of a variety of chemicals, such as caustic soda, chlorine, hydrochloric acid and so on. Chlorine and sodium hydroxide can be prepared by electrolysis of sodium chloride aqueous solution, and further react to generate hydrochloric acid and other chemicals.
3. Food additives: Sodium chloride is widely used in food processing as a food additive, which can adjust the taste of food and improve the preservation and flavor of food.
4. Industrial salt: Sodium chloride can be used as industrial salt in a variety of industrial processes, such as leather tanning, printing and dyeing, ceramics, etc. In industrial salt, sodium chloride can play a role in adjusting pH value and improving product quality.

In conclusion, sodium chloride has a wide range of uses in the field of chemical production raw materials, and is an important inorganic compound.

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