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Names | |
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IUPAC names | |
Systematic IUPAC name
Thioxomethanone | |
Identifiers | |
3D model (JSmol)
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ChEBI | |
ChemSpider | |
ECHA InfoCard | 100.006.674 |
EC Number |
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KEGG | |
PubChem CID
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UNII | |
UN number | 2204 |
CompTox Dashboard (EPA)
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Properties | |
COS | |
Molar mass | 60.075 g/mol |
Appearance | colorless gas |
Odor | sulfide-like |
Density | 2.51 g/L |
Melting point | −138.8 °C (−217.8 °F; 134.3 K) |
Boiling point | −50.2 °C (−58.4 °F; 223.0 K) |
Critical point (T, P) | 101.85 °C (215.3 °F; 375.0 K), 58.03 standard atmospheres (5,879.9 kPa; 852.8 psi)[2] |
0.376 g/100 mL (0 °C) 0.125 g/100 mL (25 °C) | |
Solubility | very soluble in KOH, CS2 soluble in alcohol, toluene |
−32.4×10−6 cm3/mol | |
0.65 D | |
Thermochemistry | |
Heat capacity (C)
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41.5 J/(mol⋅K) |
Std molar
entropy (S⦵298) |
231.5 J/(mol⋅K) |
Std enthalpy of
formation (ΔfH⦵298) |
−141.8 kJ/mol |
Hazards | |
GHS labelling: | |
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Danger | |
H220, H280, H315, H319, H331, H335 | |
P210, P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P311, P312, P321, P332+P313, P337+P313, P362, P377, P381, P403, P403+P233, P405, P410+P403, P501 | |
NFPA 704 (fire diamond) | |
Explosive limits | 12–29% |
Safety data sheet (SDS) | Carbonyl sulfide MSDS |
Related compounds | |
Related compounds
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Carbon dioxide Carbon disulfide Carbonyl selenide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Carbonyl sulfide is the chemical compound with the linear formula O=C=S. It is a colorless flammable gas with an unpleasant odor.[not verified in body] It is a linear molecule consisting of a carbonyl double bonded to a sulfur atom. Carbonyl sulfide can be considered to be intermediate between carbon dioxide and carbon disulfide, both of which are valence isoelectronic with it.