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Names | |||
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IUPAC name
Sulfur monoxide[citation needed]
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Systematic IUPAC name
Oxidosulfur[1] | |||
Identifiers | |||
3D model (JSmol)
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7577656 | |||
ChEBI | |||
ChEMBL | |||
ChemSpider | |||
666 | |||
MeSH | sulfur+monoxide | ||
PubChem CID
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CompTox Dashboard (EPA)
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Properties | |||
SO | |||
Molar mass | 48.064 g mol−1 | ||
Appearance | Colourless gas | ||
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
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Triplet oxygen Disulfur | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Sulfur monoxide is an inorganic compound with formula SO. 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.