What is Thallium(I) sulfide?
{{chembox | Verifiedfields = changed | Watchedfields = changed | verifiedrevid = 470605697 | ImageFile = Thallium(I)-sulfid.png | ImageSize = | IUPACName = Thallium(I) sulfide | OtherNames = thallous sulfide, thallous sulphide |Section1={{Chembox Identifiers | CASNo_Ref = {{cascite|changed|??}} | CASNo = 1314-97-2 | StdInChI_Ref = {{stdinchicite|correct|chemspider}} | StdInChI = 1S/S.2Tl/q-2;2*+1 | StdInChIKey_Ref = {{stdinchicite|correct|chemspider}} | StdInChIKey = BXJGLLKRUQQYTC-UHFFFAOYSA-N | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | ChemSpiderID = 140161 | SMILES = S([Tl])[Tl] | PubChem = 16683485 | EINECS = 215-250-8 }} |Section2={{Chembox Properties | Formula = Tl<sub>2</sub>S | MolarMass = 440.833 g/mol | Appearance = black crystalline solid | Density = 8.390 g/cm<sup>3</sup> | MeltingPtC = 448 | BoilingPtC = 1367 | Solubility = | MagSus = &minus;88.8·10<sup>−6</sup> cm<sup>3</sup>/mol }} |Section3={{Chembox Structure | CrystalStruct = [[Trigonal]], [[Pearson symbol|hR81]] | SpaceGroup = R3, No. 146 }} |Section7={{Chembox Hazards | MainHazards = | FlashPt = | AutoignitionPt = }} }} '''Thallium(I) sulfide''', also known as '''thallous sulfide''', is a [[chemical compound]]. Its chemical formula is Tl<sub>2</sub>S. It has [[thallium]] and [[sulfide]] [[ion]]s in it. The thallium is in its +1 [[oxidation state]]. ==Properties== Thallium(I) sulfide is a black solid. It reacts with [[acid]]s to make [[hydrogen sulfide]] and a thallium [[salt]]. ==Occurrence and preparation== It is found as a [[mineral]] called carlinite, but it is rare. It is the only thallium sulfide mineral that does not have another [[metal]] in it. It is made in the laboratory by reacting [[thallium(I) sulfate]] with hydrogen sulfide or by heating thallium and [[sulfur]] together. ==Uses== It was used in some of the first [[infrared]] detectors. One of the first reliable infrared detectors used thallium sulfide and it was made in [[World War II]]. ==Related pages== *[[Thallium(I) chloride]] *[[Thallium(II