N-Acetyl-L-alanine amide
- Formula: C5H10N2O2
- Molecular weight: 130.1451
- IUPAC Standard InChI: InChI=1S/C5H10N2O2/c1-3(5(6)9)7-4(2)8/h3H,1-2H3,(H2,6,9)(H,7,8)
- IUPAC Standard InChIKey: DVOVBGJJSFSOPZ-UHFFFAOYSA-N
- CAS Registry Number: 15962-47-7
- Chemical structure:
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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:
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔsubH° | 28.23 ± 0.38 | kcal/mol | N/A | Vecchio, Barone, et al., 1999 | AC |
Enthalpy of sublimation
| ΔsubH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 27.49 ± 0.29 | 376. | C | Vecchio, Barone, et al., 1999 | AC |
| 27.5 ± 0.7 | 388. | TE | Ferro, Della Gatta, et al., 1988 | Based on data from 366. to 410. K. See also Barone, Ferro, et al., 1986.; AC |
Enthalpy of fusion
| ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 5.1864 | 431.0 | Ferro, Della Gatta, et al., 1988 | DH |
| 5.19 | 431. | Domalski and Hearing, 1996 | AC |
| 5.19 | 431. | Ferro, Della Gatta, et al., 1988 | AC |
Entropy of fusion
| ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 12.0 | 431.0 | Ferro, Della Gatta, et al., 1988 | DH |
References
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Vecchio, Barone, et al., 1999
Vecchio, Pompea Del; Barone, Guido; Sabbah, Raphaël; Gatta, Giuseppe Della; Abate, Lorenzo,
Thermodynamics of sublimation ofN-acetyl amides of some amino acids,
The Journal of Chemical Thermodynamics, 1999, 31, 8, 1001-1008, https://doi.org/10.1006/jcht.1999.0504
. [all data]
Ferro, Della Gatta, et al., 1988
Ferro, D.; Della Gatta, G.; Barone, G.,
Enthalpies of sublimation and fusion for N-acetyl substituted glycine, L-alanine, and D-leucine amides,
J. Therm. Anal., 1988, 34, 835-841. [all data]
Barone, Ferro, et al., 1986
Barone, G.; Ferro, D.; Fiorani, P.; Mattia, C.A.; Puliti, R.,
J. Calorim. Anal. Therm. Thermodyn. Chim., 1986, 17, 471. [all data]
Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D.,
Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III,
J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985
. [all data]
Notes
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- Symbols used in this document:
ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion ΔsubH Enthalpy of sublimation ΔsubH° Enthalpy of sublimation at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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