Silver chloride - AgCl

What is Silver chloride?

Silver chloride is a white crystalline chemical compound with the formula AgCl. Silver chloride in the test tube quickly turns purplish, especially in a sunny laboratory because the silver chloride is split up into silver and chlorine. Silver chloride is prepared when sodium chloride is added to silver nitrate solution a white precipitate of silver chloride occurs. Silver chloride is an example of a well-known salt stain used to impart an amber color to glass.

Other name – chlorosilver


Silver chloride


5.56 g/cm³

Molecular Weight/ Molar Mass

143.32 g/mol

Boiling Point

1,547 °C

Melting Point

455 °C

Chemical Formula


Silver chloride Structure

Silver chloride

Physical Properties of Silver chloride – AgCl


No odor


White powder



Vapour Pressure


Covalently-Bonded Unit



Insoluble in water

Chemical Properties of Silver chloride – AgCl

  • Silver chloride undergo decomposition reaction in the presence of sunlight to form silver and chlorine. The chemical reaction is as follows.
  • AgCl → Ag + Cl

  • Silver chloride reacts with base like ammonia forming a complex compound called Silver diammo ion and chloride ion.
  • AgCl + 2NH3 → [Ag(NH3)2]+ + Cl

Uses of Silver chloride – AgCl

  • The most effective form of water- activated battery uses magnesium as the anode and silver chloride as the positive electrode.
  • Used in electroplating and polishing mirrors and in making alloys.
  • Used as an antidote that reacts with the poison to produce a harmless chemical compound.
  • Used in medicines and silver salts are used in photographic films.

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