1,2-Pentanediol
- Formula: C5H12O2
- Molecular weight: 104.1476
- IUPAC Standard InChIKey: WCVRQHFDJLLWFE-UHFFFAOYSA-N
- CAS Registry Number: 5343-92-0
- 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: pentane-1,2-diol
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Phase change data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -465.1 ± 7.5 | kJ/mol | Ccb | Knauth and Sabbah, 1990 |
Condensed phase thermochemistry data
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°liquid | -546.7 ± 7.5 | kJ/mol | Ccb | Knauth and Sabbah, 1990 | |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -3135.8 ± 7.5 | kJ/mol | Ccb | Knauth and Sabbah, 1990 | Corresponding ΔfHºliquid = -546.7 kJ/mol (simple calculation by NIST; no Washburn corrections) |
Phase change data
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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:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 480. ± 20. | K | AVG | N/A | Average of 7 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 74.6 ± 0.3 | kJ/mol | GS | Verevkin, 2004 | Based on data from 289. to 345. K.; AC |
ΔvapH° | 81.6 ± 0.2 | kJ/mol | C | Knauth and Sabbah, 1990 | ALS |
ΔvapH° | 81.6 | kJ/mol | N/A | Knauth and Sabbah, 1990 | DRB |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Knauth and Sabbah, 1990
Knauth, P.; Sabbah, R.,
Energetics of inter- and intramolecular bonds in alkanediols. IV. The thermochemical study of 1,2-alkanediols at 298.15 K,
Thermochim. Acta, 1990, 164, 145-152. [all data]
Verevkin, 2004
Verevkin, Sergey P.,
Determination of vapor pressures and enthalpies of vaporization of 1,2-alkanediols,
Fluid Phase Equilibria, 2004, 224, 1, 23-29, https://doi.org/10.1016/j.fluid.2004.05.010
. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
Tboil Boiling point ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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