Acetic acid, hydroxy-
- Formula: C2H4O3
- Molecular weight: 76.0514
- IUPAC Standard InChIKey: AEMRFAOFKBGASW-UHFFFAOYSA-N
- CAS Registry Number: 79-14-1
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Glycolic acid; α-Hydroxyacetic acid; Glycollic acid; Hydroxyacetic acid; Hydroxyethanoic acid; HOCH2COOH; Kyselina glykolova; Kyselina hydroxyoctova; 2-Hydroxyacetic acid; 2-Hydroxyethanoic acid; NSC 166
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Gas 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: Glushko Thermocenter, Russian Academy of Sciences, Moscow
Constant pressure heat capacity of gas
Cp,gas (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
9.049 | 50. | Dorofeeva O.V., 1997 | p=1 bar. |
11.10 | 100. | ||
13.39 | 150. | ||
15.69 | 200. | ||
20.3 ± 0.5 | 298.15 | ||
20.34 | 300. | ||
24.869 | 400. | ||
28.826 | 500. | ||
32.015 | 600. | ||
34.503 | 700. | ||
36.444 | 800. | ||
37.988 | 900. | ||
39.242 | 1000. | ||
40.282 | 1100. | ||
41.162 | 1200. | ||
41.914 | 1300. | ||
42.567 | 1400. | ||
43.133 | 1500. |
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 by: William E. Acree, Jr., James S. Chickos
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
12.4 | 362. | A | Stephenson and Malanowski, 1987 | Based on data from 350. to 375. K. |
Reaction 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: John E. Bartmess
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
C2H3O3- + =
By formula: C2H3O3- + H+ = C2H4O3
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 332.3 ± 2.3 | kcal/mol | TDEq | Caldwell, Renneboog, et al., 1989 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 327.8 ± 2.0 | kcal/mol | TDEq | Caldwell, Renneboog, et al., 1989 | gas phase |
Gas phase ion energetics 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: John E. Bartmess
De-protonation reactions
C2H3O3- + =
By formula: C2H3O3- + H+ = C2H4O3
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 332.3 ± 2.3 | kcal/mol | TDEq | Caldwell, Renneboog, et al., 1989 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 327.8 ± 2.0 | kcal/mol | TDEq | Caldwell, Renneboog, et al., 1989 | gas phase |
Mass spectrum (electron ionization)
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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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
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Due to licensing restrictions, this spectrum cannot be downloaded.
Owner | NIST Mass Spectrometry Data Center Collection (C) 2014 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
---|---|
Origin | Japan AIST/NIMC Database- Spectrum MS-NW-1669 |
NIST MS number | 228264 |
References
Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Dorofeeva O.V., 1997
Dorofeeva O.V.,
Unpublished results. Thermocenter of Russian Academy of Science, Moscow, 1997. [all data]
Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw,
Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2
. [all data]
Caldwell, Renneboog, et al., 1989
Caldwell, G.; Renneboog, R.; Kebarle, P.,
Gas Phase Acidities of Aliphatic Carboxylic Acids, Based on Measurements of Proton Transfer Equilibria,
Can. J. Chem., 1989, 67, 4, 661, https://doi.org/10.1139/v89-092
. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), References
- Symbols used in this document:
Cp,gas Constant pressure heat capacity of gas ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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