Sulfur monoxide

Sulfur monoxide
Names
	IUPAC name Sulfur monoxide
	Systematic IUPAC name Oxidosulfur
Identifiers
CAS Number	13827-32-2 ;
3D model (JSmol)	Interactive image;
Beilstein Reference	7577656
ChEBI	CHEBI:45822 ;
ChEMBL	ChEMBL1236102 ;
ChemSpider	102805 ;
Gmelin Reference	666
MeSH	sulfur+monoxide
PubChem CID	114845;
CompTox Dashboard (EPA)	DTXSID60160558 ;
	InChI InChI=1S/OS/c1-2 Key: XTQHKBHJIVJGKJ-UHFFFAOYSA-N ; InChI=1/OS/c1-2 Key: XTQHKBHJIVJGKJ-UHFFFAOYAK;
	SMILES O=S;
Properties
Chemical formula	SO
Molar mass	48.064 g mol−1
Appearance	Colourless gas
Solubility in water	Reacts
log P	0.155
Thermochemistry
Std molar; entropy (S⦵298)	221.94 J K−1 mol−1
Std enthalpy of; formation (ΔfH⦵298)	5.01 kJ mol−1
Related compounds
Related compounds	Triplet oxygen ; Disulfur
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Sulfur monoxide is an inorganic compound with formula S O. It is only found as a dilute gas phase. When concentrated or condensed, it converts to S₂O₂ (disulfur dioxide). It has been detected in space but is rarely encountered intact otherwise.