silver sulfide


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silver sulfide

[′sil·vər ′səl‚fīd]
(inorganic chemistry)
Ag2S A dark, heavy powder, insoluble in water, soluble in concentrated sulfuric and nitric acids; melts at 825°C; used in ceramics and in inlay metalwork.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The precipitation of silver sulfide ([Ag.sub.2]S) was evident as observed the formation of black films on the reactor walls.
Silver sulfide sulfate was formed at temperatures between 250-500oC and decomposes to form Ag2SO3 and Ag2S at temperatures between 500-600oC.
Pseudomonas stutzeri AG259, the silver-resistant bacterial strain, isolated from a silver mine, intracellularly accumulated silver NPs along with some silver sulfide ranging in size from 35 to 46 nm [63].
Silver is highly susceptible to reaction with sulfur; and high levels of sulfur can migrate through the outer plated terminations and barrier layer to the inner palladium/silver termination, leading to the formation of silver sulfide. Silver sulfide is non-conductive, and its continued migration may eventually lead to open circuit failure.
Resistor terminal corrosion results in electrical opens as the corrosion product, silver sulfide, builds and consumes the terminal metallurgy.
CPSC noted that it has not yet been determined how the hydrogen sulfide gas is being created in homes built with Chinese drywall, but the hydrogen sulfide gas is the essential component that causes copper and silver sulfide corrosion found in the complaint homes.
Another reference describes the formation of a 200 angstrom thick layer of silver sulfide in 100 hours at a concentration of just 100 [micro]g/[m.sup.3] [72 ppb] (Anon E 2008).
Randy Schuller ("Creep Corrosion on Lead-Free Printed Circuit Boards in High Sulfur Environments," SMTAI, October 2007): This corrosion of the silver and copper surface is primarily copper sulfide (Cu2S) with a small amount of silver sulfide (Ag2S).
Both copper sulfide and silver sulfide can form black marks on the skin.
(15) These particles are composed predominantly either of silver sulfide or silver selenide; over time, most of the silver sulfide is replaced with silver selenide.
Themethanol draws the Cd out of the nanorods, while the Ag+ fills the void left by the Cd, forming areas of silver sulfide (A[g.sub.2]S) within the rod.