What is Carbon monoxide?
{{Chembox | verifiedrevid = 477004453 | ImageFileL1 = Carbon-monoxide-3D-balls.png | ImageNameL1 = Ball-and-stick model of carbon monoxide | ImageFileR1 = Carbon-monoxide-3D-vdW.png | ImageNameR1 = Spacefill model of carbon monoxide | ImageFile2 = Carbon monoxide 2D.svg | ImageSize2 = 170px | ImageName2 = model of carbon monoxide | PIN = Carbon monoxide | OtherNames = Carbon monooxide<br />Carbonous oxide<br />Carbon(II) oxide<br />Carbonyl<br/>Flue gas<br/>Monoxide |Section1={{Chembox Identifiers | InChI = 1/CO/c1-2 | InChIKey = UGFAIRIUMAVXCW-UHFFFAOYAT | CASNo = 630-08-0 | CASNo_Ref = {{cascite|correct|CAS}} | PubChem = 281 | ChemSpiderID = 275 | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | UNII_Ref = {{fdacite|correct|FDA}} | UNII = 7U1EE4V452 | EINECS = 211-128-3 | UNNumber = 1016 | KEGG_Ref = {{keggcite|correct|kegg}} | KEGG = D09706 | MeSHName = Carbon+monoxide | ChEBI_Ref = {{ebicite|correct|EBI}} | ChEBI = 17245 | RTECS = FG3500000 | SMILES = [C-]#[O+] | StdInChI_Ref = {{stdinchicite|correct|chemspider}} | StdInChI = 1S/CO/c1-2 | StdInChIKey_Ref = {{stdinchicite|correct|chemspider}} | StdInChIKey = UGFAIRIUMAVXCW-UHFFFAOYSA-N | Beilstein = 3587264 | Gmelin = 421}} |Section2={{Chembox Properties | Formula = CO | MolarMass = 28.010 g/mol | Appearance = colorless gas | Odor = odorless | Density = 789&nbsp;kg/m<sup>3</sup>, liquid<br />1.250&nbsp;kg/m<sup>3</sup> at 0&nbsp;°C, 1&nbsp;atm<br />1.145&nbsp;kg/m<sup>3</sup> at 25&nbsp;°C, 1&nbsp;atm | Solubility = 27.6&nbsp;mg/L (25&nbsp;°C) | SolubleOther = soluble in [[chloroform]], [[acetic acid]], [[ethyl acetate]], [[ethanol]], [[ammonium hydroxide]], [[benzene]] | MeltingPtC = −205.02 | BoilingPtC = −191.5 | Dipole = 0.122 [[Debye|D]] | RefractIndex = 1.0003364 | HenryConstant = 1.04 atm·m<sup>3</sup>/mol | MagSus = −9.8·10<sup>−6</sup> cm<sup>3</sup>/mol }} |Section4={{Chembox Thermochemistry | HeatCapacity = 29.1 J/(K·mol) | Entropy = 197.7 J/(mol·K) | DeltaGf = | DeltaHf = −110.5 kJ/mol | DeltaHc = −283.4 kJ/mol }} |Section7={{Chembox