Silver sulfide 488812 210928658 2008-05-08T00:34:45Z Milk's Favorite Cookie 1761937 Copyedited. {{chembox new | ImageFile = | ImageSize = | IUPACName = | SystematicName = | OtherNames = | Section1 = {{Chembox Identifiers | Abbreviations = | CASNo = 21548-73-2 | EINECS = | EINECSCASNO = | PubChem = | SMILES = | InChI = | RTECS = | MeSHName = | ChEBI = | KEGG = | ATCCode_prefix = | ATCCode_suffix = | ATC_Supplemental =}} | Section2 = {{Chembox Properties | Formula = [[silver|Ag]]<sub>2</sub>[[sulfur|S]] | MolarMass = 247.8 g/mol | Appearance = Black cubic crystal | Density = | MeltingPt = 1098 [[kelvin|K]] (825 [[celsius|°C]]) | Melting_notes = | BoilingPt = | Boiling_notes = | Solubility = 8.5<sup><nowiki>&minus;</nowiki>15</sup>[[gram|g]] in 1L water | SolubleOther = | Solvent = | LogP = | VaporPressure = | HenryConstant = | AtmosphericOHRateConstant = | pKa = | pKb = }} | Section3 = {{Chembox Structure | CrystalStruct = | Coordination = | MolShape = }} | Section4 = {{Chembox Thermochemistry | DeltaHf = -32.6 kJ/mol | DeltaHc = | Entropy = 144.0 J/mol·K | HeatCapacity = }} | Section5 = {{Chembox Pharmacology | AdminRoutes = | Bioavail = | Metabolism = | HalfLife = | ProteinBound = | Excretion = | Legal_status = | Legal_US = | Legal_UK = | Legal_AU = | Legal_CA = | PregCat = | PregCat_AU = | PregCat_US = }} | Section6 = {{Chembox Explosive | ShockSens = | FrictionSens = | ExplosiveV = | REFactor = }} | Section7 = {{Chembox Hazards | EUClass = | EUIndex = | MainHazards = May cause irritation | NFPA-H = | NFPA-F = | NFPA-R = | NFPA-O = | RPhrases = | SPhrases = | RSPhrases = | FlashPt = | Autoignition = | ExploLimits = | LD50 = | PEL = }} | Section8 = {{Chembox Related | OtherAnions = | OtherCations = | OtherFunctn = | Function = | OtherCpds = }} }} '''Silver sulfide''' (or ''Silver sulphide'' in British English), Ag<sub>2</sub>S, is the [[sulfide]] of [[silver]]. It is black and constitutes the [[tarnish]] that forms on silver when exposed to the [[hydrogen sulfide]] of the atmosphere. It is found in nature as the minerals [[argentite]] and acanthite. When formed on [[contact|electrical contacts]] operating in an atmosphere rich in hydrogen sulfide, long filaments known as [[Silver Whiskers]] can form. ==External links== * [http://www.saltlakemetals.com/Silver_Sulfide.htm Silver Sulfide] [[Category:Sulfides]] [[Category:Silver compounds]] {{inorganic-compound-stub}} [[ar:كبريتيد فضة]] [[da:Sølvsulfid]] [[de:Silbersulfid]] [[fr:Sulfure d'argent]] [[nl:Acanthiet]] [[nn:Sølvsulfid]]