Carbonyl sulfide
- Formula: COS
- Molecular weight: 60.075
- IUPAC Standard InChI: InChI=1S/COS/c2-1-3
- IUPAC Standard InChIKey: JJWKPURADFRFRB-UHFFFAOYSA-N
- CAS Registry Number: 463-58-1
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Carbon oxide sulfide; Carbon oxysulfide; COS; Oxycarbon sulfide; UN 2204; Carbon oxide sulphide; carbonyl sulphide
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Gas phase thermochemistry data
Go To: Top, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -138.41 | kJ/mol | Review | Chase, 1998 | Data last reviewed in March, 1966 |
| ΔfH°gas | -139.0 ± 1.0 | kJ/mol | Eqk | Bechtold, 1965 | Reanalyzed by Cox and Pilcher, 1970, Original value = -142.0 kJ/mol; ALS |
| ΔfH°gas | -139.0 ± 1.0 | kJ/mol | Eqk | Terres and Wesemann, 1932 | Reanalyzed by Cox and Pilcher, 1970, Original value = -137.52 kJ/mol; ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 231.57 | J/mol*K | Review | Chase, 1998 | Data last reviewed in March, 1966 |
Gas Phase Heat Capacity (Shomate Equation)
Cp° = A + B*t + C*t2 + D*t3 +
E/t2
H° − H°298.15= A*t + B*t2/2 +
C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 −
E/(2*t2) + G
Cp = heat capacity (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 298. - 1200. | 1200. - 6000. |
|---|---|---|
| A | 34.53892 | 60.32240 |
| B | 43.05378 | 1.738332 |
| C | -26.61773 | -0.209982 |
| D | 6.338844 | 0.014110 |
| E | -0.327515 | -5.128873 |
| F | -151.5001 | -168.6307 |
| G | 259.8118 | 287.6454 |
| H | -138.4071 | -138.4071 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in March, 1966 | Data last reviewed in March, 1966 |
References
Go To: Top, Gas phase thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Chase, 1998
Chase, M.W., Jr.,
NIST-JANAF Themochemical Tables, Fourth Edition,
J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]
Bechtold, 1965
Bechtold, V.E.,
Bestimmung des Standardwertes der freien Reaktionsenthalpie für die Bildung von Kohlenoxysulfid aus Kohlenmonoxyd,
Ber. Bunsenges. Phys. Chem., 1965, 69, 326-328. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]
Terres and Wesemann, 1932
Terres, E.; Wesemann, H.,
Uber Gleichgewichtsmessungen der teilreaktionen bei der umsetzung von scnwefelkohlenstoff mit wasserdampf im temperaturgebiet von 350° bis 900° C,
Angew. Chem., 1932, 45, 795-832. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, References
- Symbols used in this document:
S°gas,1 bar Entropy of gas at standard conditions (1 bar) ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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