- Formula: O2S
- Molecular weight: 64.064
- IUPAC Standard InChI:
- Download the identifier in a file.
- IUPAC Standard InChIKey: RAHZWNYVWXNFOC-UHFFFAOYSA-N
- CAS Registry Number: 7446-09-5
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
- Other names: Sulfurous acid anhydride; Fermenicide powder; Fermenticide liquid; Sulfur oxide (SO2); Sulfurous anhydride; Sulfurous oxide; SO2; Sulphur dioxide; Fermenicide liquid; Schwefeldioxyd; Siarki dwutlenek; Sulfur oxide; UN 1079; Sulfur dioxide (SO2); Sulfur superoxide
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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.
|fH°gas||-70.939 ± 0.048||kcal/mol||Review||Cox, Wagman, et al., 1984||CODATA Review value|
|fH°gas||-70.946||kcal/mol||Review||Chase, 1998||Data last reviewed in June, 1961|
|S°gas,1 bar||59.327 ± 0.012||cal/mol*K||Review||Cox, Wagman, et al., 1984||CODATA Review value|
|S°gas,1 bar||59.324||cal/mol*K||Review||Chase, 1998||Data last reviewed in June, 1961|
Gas Phase Heat Capacity (Shomate Equation)
Cp° = A + B*t + C*t2 + D*t3 +
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 (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
|Temperature (K)||298. - 1200.||1200. - 6000.|
|Reference||Chase, 1998||Chase, 1998|
|Comment||Data last reviewed in June, 1961||Data last reviewed in June, 1961|
Go To: Top, Gas phase thermochemistry data, Notes
Cox, Wagman, et al., 1984
Cox, J.D.; Wagman, D.D.; Medvedev, V.A., CODATA Key Values for Thermodynamics, Hemisphere Publishing Corp., New York, 1984, 1. [all data]
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]
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) fH°gas Enthalpy of formation of gas at standard conditions
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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