silver chloride


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silver chloride,

chemical compound, AgCl, a white cubic crystalline solid. It is nearly insoluble in water but is soluble in a water solution of ammonia, potassium cyanide, or sodium thiosulfate ("hypo"). On exposure to light it becomes a deep grayish blue due to its decomposition into metallic silver and atomic chlorine. This light-sensitive behavior is the basis of photographic processes (see photographyphotography, still,
science and art of making permanent images on light-sensitive materials.

See also photographic processing; motion picture photography; motion pictures.
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, stillstill,
term applied to the apparatus used in distillation, referring either to the flask in which a liquid to be distilled is evaporated, or to other pieces of equipment, or to the entire apparatus.
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). Since silver bromide, AgBr, and silver iodide, AgI, react similarly, all three of these silver halide salts are used in making photographic films and plates. Both the bromide and iodide are less soluble in water and more sensitive to light than the chloride. The bromide forms light yellow cubic crystals; the iodide forms yellow hexagonal or yellow-orange cubic crystals, depending on the temperature. Besides use in photography, silver chloride is used in silver plating, and silver iodide is used for seeding clouds. The chloride, bromide, and iodide occur naturally as the minerals cerargyrite, bromyrite, and iodyrite, respectively. Silver fluoride, AgF, forms colorless cubic crystals; it is much more soluble in water than the other silver halides.

silver chloride

[′sil·vər ′klȯr‚īd]
(inorganic chemistry)
AgCl A white, poisonous, light-sensitive powder; slightly soluble in water, soluble in alkalies and acids; melts at 445°C; used in photography, photometry, silver plating, and medicine.
References in periodicals archive ?
The solubility (S) of silver chloride in sea water is commonly calculated according to the following equations:
According to the preceding equations, the solubility of silver chloride in the sea water is 4.
When the same experiments were performed with silver chloride instead of silver sulfadiazine, the concentration of soluble silver was as shown in Fig.
In the case of silver chloride supported on the hydrophilic membranes (cellulose, chitosan, and collagen), the soluble silver concentration in the medium remained below the maximum expected concentration of 11.
For all the silver salts studied in this work, the behavior of silver chloride when exposed to light was unique, as it was the only salt to turn purple-blue.
When the same experiments were performed with solid silver chloride instead of silver sulfadiazine, the concentration of soluble silver in the medium (SSES), shown in Fig.
In addition, a white precipitate had formed above the membrane that turned a purple-blue color when exposed to light, indicating the formation of silver chloride.
When these same experiments were performed with silver chloride instead of silver sulfadiazine, the concentration of soluble silver in the medium (shown in Fig.
When either silver sulfadiazine or silver chloride is placed in direct contact with any of the media investigated, the following equilibria occur:
When silver sulfadiazine was used experimentally, this trend was clearly observed; however, the trend was not as clear with silver chloride, as chloride was not analyzed (see Figs.
As shown in the above equilibria, the chloride from the medium can diffuse above the membrane to react with the silver salt to form both insoluble solid silver chloride and the soluble dichloroargentate(I) anion, which can then diffuse back into the medium.
In addition, a significant amount of silver chloride should form as a result of the above reaction, and this was indeed noted in every case in which the medium contained chloride.