Silver chloride

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A white, granular powder that darkens on exposure to light. Silver chloride occurs naturally as the mineral ceragyrite or horn silver. It is used primarily in photographic emulsions. Silver chloride is also used in photochromic glass, silver plating, and as infrared analysis windows.

Synonyms and Related Terms

silver muriate; luna cornea; horn silver; ceragyrite; silver monochloride


  • May permanently stain skin.
  • Sensitive to light.
  • Contact may cause irritation.
  • Fisher Scientific: MSDS

Physical and Chemical Properties

Soluble in ammonium hydroxide, concentrated sulfuric acid, sodium thiosulfate and potassium bromide solution. Insoluble in ethanol and dilute acids.

Composition AgCl
CAS 7783-90-6
Melting Point 445 C
Density 5.56 g/ml
Molecular Weight mol. wt. = 143.32
Boiling Point 1550 C

Resources and Citations

  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 176
  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 8652
  • The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
  • Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, Technology and Conservation, Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985
  • Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979

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