Sodium Chloride - NaCl

What is Sodium Chloride?

Sodium Chloride is an ionic compound with chemical formula NaCl. It is also known as salt. It occurs in oceans and sea waters. It is also found as rock salt. About 1% to 5 % of sea water is made of NaCl. It is a crystalline solid, white in color. In its aqueous form it is called saline solution. This compound is water soluble and consists of sodium cation and chloride anion. The sodium and chloride ion are present in the ratio 1:1. It is widely known as table salt and is mostly used in food industry for preservation and flavoring. The PH of sodium chloride is 7.

Properties of Sodium Chloride – NaCl

NaCl Sodium Chloride
Molecular Weight/ Molar Mass 58.44 g/mol
Density 2.165 g/cm3
Boiling Point 1,413 °C
Melting Point 801 °C

Sodium Chloride structure – NaCl

Sodium Chloride structure

Uses of Sodium Chloride (NaCl)

  • It is used in medicine – Saline solution in nasal spray
  • It is used in fire extinguishers
  • It is used in cleansers like shampoo, toothpaste
  • It is used in soda ash industry to produce sodium carbonate through Solvay process
  • It is used in paper industry, textile industry and in the construction of roads
  • It is used in water softening

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Learn more about the structure and properties of NaCl from the expert faculties at BYJU’S.


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