4-Aminobutanoic acid
- Formula: C4H9NO2
- Molecular weight: 103.1198
- IUPAC Standard InChIKey: BTCSSZJGUNDROE-UHFFFAOYSA-N
- CAS Registry Number: 56-12-2
- 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: γ-Aminobutyric acid; 4-Aminobutyric acid; 4-Amino-n-butyric acid; γ-Amino-n-butyric acid; Butanoic acid, 4-amino-; γ-Aminobutanoic acid; Aminalon; Aminobutyric acid,-4-; Butyric acid, 4-amino-; DF 468; Gaballon; Gamarex; Gamastan; Gammagee; Gammalon; Gammalone; Gammar; Gammasol; Gamulin; Globulin, immune human serum; GABA; Immu-G; Immuglobin; Mielogen; Mielomade; Reanal; ω-Aminobutyric acid; 3-Carboxypropylamine; NSC 27418; Piperidic acid; Piperidinic acid
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Data at other public NIST sites:
- Options:
Data at NIST subscription sites:
NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.
Condensed 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.
Data compiled as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°solid | -561. ± 4.7 | kJ/mol | Ccb | Contineanu and Marchidan, 1994 | ALS |
ΔfH°solid | -581.1 ± 0.3 | kJ/mol | Ccb | Skoulika and Sabbah, 1983 | see Skoulika and Sabbah, 1982; ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°solid | -2280. ± 4.7 | kJ/mol | Ccb | Contineanu and Marchidan, 1994 | ALS |
ΔcH°solid | -2279.23 ± 0.11 | kJ/mol | Ccb | Skoulika and Sabbah, 1983 | see Skoulika and Sabbah, 1982; ALS |
ΔcH°solid | -2282.4 ± 0.84 | kJ/mol | Ccb | Strepikheev, Skuratov, et al., 1955 | Reanalyzed by Cox and Pilcher, 1970, Original value = -2283. kJ/mol; At 293 °K; ALS |
Constant pressure heat capacity of solid
Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
133.6 | 298. | Skoulika and Sabbah, 1983 | DH |
146.4 | 298.15 | Spink and Wads, 1975 | DH |
References
Go To: Top, Condensed phase thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Contineanu and Marchidan, 1994
Contineanu, J.; Marchidan, D.I.,
The enthalpies of combustion and formation of some isomers of aminobutyric (aminobutanoic) acid,
Rev. Roum. Chim., 1994, 39, 1391-1395. [all data]
Skoulika and Sabbah, 1983
Skoulika, S.; Sabbah, R.,
Thermodynamique de composes azotes X. Etude thermochimique de quelques acides ω-amines,
Thermochim. Acta, 1983, 61, 203-214. [all data]
Skoulika and Sabbah, 1982
Skoulika, S.; Sabbah, R.,
Enthalpy of formation of some ω-amino acids in the solid state,
C. R. Seances Acad. Sci., Ser. 2, 1982, 295, 657-660. [all data]
Strepikheev, Skuratov, et al., 1955
Strepikheev, A.A.; Skuratov, S.M.; Shtekher, S.M.; Muromova, R.S.; Brykina, E.P.; Kachinskaya, O.N.,
Mutual interaction of amino and carboxyl groups in amino acids,
Dokl. Akad. Nauk SSSR, 1955, 102, 543-545. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]
Spink and Wads, 1975
Spink, C.H.; Wads, I.,
Thermochemistry of solutions of biochemical model compounds. 4. The partial molar heat capacities of some amino acids in aqueous solution,
J. Chem. Thermodynam., 1975, 7, 561-572. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.