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Silver Chloride
Silver chloride (AgCl) is a white, crystalline chemical compound notable for its minimal solubility in water. Naturally found in the mineral chlorargyrite, AgCl exhibits an intriguing behavior under sunlight. When exposed to light, the compound’s inherent silver and chlorine separate, gradually transforming its appearance to a purplish hue in a test tube. Moreover, when sodium chloride is introduced into a silver nitrate solution, a white precipitate of silver chloride forms—a reaction that is also used to impart an amber tint to glass.
Many practical applications of AgCl stem from its light-sensitive conversion into metallic silver. This property is the foundation for its use in photographic films and photochromic lenses. In addition, silver chloride plays a crucial role in electrochemistry as a reference electrode in cells. Its versatility extends to the creation of infrared windows, pottery glazes, and colored stained glass.
Beyond these industrial uses, AgCl is valued for its antibacterial and disinfecting characteristics. It serves as an active ingredient in antimicrobials, aids in wound healing products, and is incorporated into personal deodorants and water treatment processes. Furthermore, thanks to its low toxicity at minimal concentrations, silver chloride has been employed in treating mercury poisoning and other medical applications.
Specifications:
Formula AgCl
CAS Number 7783-90-6
Formula Weight 143.32
Color White
Form Powder or chunks
Purity (based on trace metals analysis) 99.999%
Trace metal Impurities ≤ 15.0 ppm
Percent Iron (%Ag titration by AgNO3) 73.4 – 77.1%
Melting Point 455oC
Vapor Pressure 1 mm Hg (912oC)
This material is an IATA Hazard for shipping: UN3077, CL 9, PG II