What is Tin(II) oxide?
{{chembox | Verifiedfields = changed | Watchedfields = changed | verifiedrevid = 451643444 | ImageFile1 = PbO_structure.png | ImageSize1 = 150px | ImageFile2 = Tin(II) oxide.jpg | ImageSize2 = | ImageFile3 = Tin(II) oxide hydrate (2).JPG | ImageSize3 = | IUPACName = Tin(II) oxide | OtherNames = Stannous oxide, tin monoxide |Section1={{Chembox Identifiers | CASNo = 21651-19-4 | CASNo_Ref = {{cascite|correct|CAS}} | PubChem = 88989 | EINECS = 244-499-5 | RTECS = XQ3700000 | InChI = 1S/O.Sn | SMILES = O=[Sn] }} |Section2={{Chembox Properties | Formula = SnO | MolarMass = 134.709 g/mol | Appearance = black or red powder when anhydrous, white when hydrated | Density = 6.45 g/cm<sup>3</sup> | MeltingPtC = 1080 | MeltingPt_ref = <ref>Tin and Inorganic Tin Compounds: Concise International Chemical Assessment Document 65, (2005), World Health Organization</ref> | BoilingPt = | Solubility = insoluble | MagSus = &minus;19.0·10<sup>−6</sup> cm<sup>3</sup>/mol }} |Section3={{Chembox Structure | CrystalStruct = tetragonal | SpaceGroup = | Coordination = | LattConst_a = | LattConst_c = }} |Section4={{Chembox Thermochemistry | DeltaHf = −285&nbsp;kJ·mol<sup>−1</sup><ref name=b1>{{cite book| author = Zumdahl, Steven S.|title =Chemical Principles 6th Ed.| url = https://archive.org/details/chemicalprincipl0000zumd_u9g0| publisher = Houghton Mifflin Company| year = 2009| isbn = 978-0-618-94690-7|page=A23}}</ref> | Entropy = 56&nbsp;J·mol<sup>−1</sup>·K<sup>−1</sup><ref name=b1/> }} |Section7={{Chembox Hazards | ExternalSDS = [http://www.inchem.org/documents/icsc/icsc/eics0956.htm ICSC 0956] | EUClass = | RPhrases = | SPhrases = | MainHazards = | NFPA-H = | NFPA-F = | NFPA-R = | NFPA-S = | FlashPt = Non-flammable | IDLH = N.D.<ref name=PGCH>{{PGCH|0615}}</ref> | PEL = none | REL = TWA 2 mg/m<sup>3</sup> }} |Section8={{Chembox Related | OtherAnions = [[Tin(II) sulfide|Tin sulfide]]<br/>[[Tin selenide]]<br/>[[Tin telluride]] | OtherCations = [[Carbon monoxide]]<br/>[[Silicon monoxide]]<br/>[[Germanium(II) oxide]]