dl-lactic acid
- Formula: C3H6O3
- Molecular weight: 90.0779
- IUPAC Standard InChI: InChI=1S/C3H6O3/c1-2(4)3(5)6/h2,4H,1H3,(H,5,6)
- IUPAC Standard InChIKey: JVTAAEKCZFNVCJ-UHFFFAOYSA-N
- CAS Registry Number: 598-82-3
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
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- Stereoisomers:
- Other names: Lactic acid
- Information on this page:
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Reaction thermochemistry data
Go To: Top, Gas phase ion energetics 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: John E. Bartmess
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Individual Reactions
+
=
By formula: C3H5O3- + H+ = C3H6O3
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 1413. ± 9.2 | kJ/mol | G+TS | Caldwell, Renneboog, et al., 1989 | gas phase; May have large entropy correction from cyclization; see HOCH2CO2- |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 1383. ± 8.4 | kJ/mol | IMRE | Caldwell, Renneboog, et al., 1989 | gas phase; May have large entropy correction from cyclization; see HOCH2CO2- |
Gas phase ion energetics data
Go To: Top, Reaction thermochemistry 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: John E. Bartmess
De-protonation reactions
+
=
By formula: C3H5O3- + H+ = C3H6O3
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 1413. ± 9.2 | kJ/mol | G+TS | Caldwell, Renneboog, et al., 1989 | gas phase; May have large entropy correction from cyclization; see HOCH2CO2- |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 1383. ± 8.4 | kJ/mol | IMRE | Caldwell, Renneboog, et al., 1989 | gas phase; May have large entropy correction from cyclization; see HOCH2CO2- |
References
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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, Reaction thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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