Ethanediamide
- Formula: C2H4N2O2
- Molecular weight: 88.0654
- IUPAC Standard InChI: InChI=1S/C2H4N2O2/c3-1(5)2(4)6/h(H2,3,5)(H2,4,6)
- IUPAC Standard InChIKey: YIKSCQDJHCMVMK-UHFFFAOYSA-N
- CAS Registry Number: 471-46-5
- 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: Oxalamide; Oxalic acid diamide; Oxamide; Oxamimidic acid; NH2COCONH2; Amid kyseliny stavelove; Formimidic acid, 1-carbamoyl-; Oxamid; Diaminoglyoxal; Oxamic acid amide; NSC 2770
- 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 | -456.9 | kJ/mol | Ccb | Parkhomenko, Pivovarov, et al., 1990 | Author was aware that data differs from previously reported values; ALS |
| ΔfH°solid | -504.4 ± 0.5 | kJ/mol | Ccr | Nunez, Barral, et al., 1988 | Author was aware that data differs from previously reported values; ALS |
| ΔfH°solid | -515.6 ± 4.2 | kJ/mol | Ccb | Tavernier and Lamouroux, 1957 | Reanalyzed by Cox and Pilcher, 1970, Original value = -513.289 kJ/mol; Author's hf298_condensed=-123.705 kcal/mol; ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°solid | -902.6 | kJ/mol | Ccb | Parkhomenko, Pivovarov, et al., 1990 | Author was aware that data differs from previously reported values; ALS |
| ΔcH°solid | -854.3 ± 0.4 | kJ/mol | Ccr | Nunez, Barral, et al., 1988 | Author was aware that data differs from previously reported values; ALS |
| ΔcH°solid | -843.1 ± 4.2 | kJ/mol | Ccb | Tavernier and Lamouroux, 1957 | Reanalyzed by Cox and Pilcher, 1970, Original value = -845.398 kJ/mol; Author's hf298_condensed=-123.705 kcal/mol; ALS |
| ΔcH°solid | -853.43 | kJ/mol | Ccb | Handrick, 1956 | ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| S°solid,1 bar | 118.11 | J/mol*K | N/A | Egan, Wakefield, et al., 1965 | DH |
Constant pressure heat capacity of solid
| Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 113.89 | 298.15 | Egan, Wakefield, et al., 1965 | T = 10 to 310 K.; 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.
Parkhomenko, Pivovarov, et al., 1990
Parkhomenko, V.D.; Pivovarov, A.A.; Sytnik, S.V.,
Thermophysical properties of oxide,
Izv. Vyssh. Uchebn. Zaved., Khim. Khim. Tekhnol., 1990, 33, 53-55. [all data]
Nunez, Barral, et al., 1988
Nunez, L.; Barral, L.; Pilcher, G.,
Enthalpies of combustion of oxamic acid, oxamide, and dithiooxamide,
J. Chem. Thermodyn., 1988, 20, 1211-1216. [all data]
Tavernier and Lamouroux, 1957
Tavernier, P.; Lamouroux, M.,
Determinations calorimetriques relatives a vingt et une substances organiques,
Mem. Poudres, 1957, 39, 335-356. [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]
Handrick, 1956
Handrick, G.R.,
Report of the study of pure explosive compounds. Part IV. Calculation of heat of combustion of organic compounds from structural features and calculation of power of high explosives, Rpt. C-58247 for the Office of the Chief of Ordnance, contract DA-19-020-ORD-47 by the Arthur D. Little, Inc., Cambridge, MA, 1956, 467-573. [all data]
Egan, Wakefield, et al., 1965
Egan, E.P.; Wakefield, Z.T.; Farr, T.D.,
Low temperature heat capacity and entropy of oxamide, 10-310 K,
J. Chem. Eng. Data, 1965, 10, 138-140. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid S°solid,1 bar Entropy of solid at standard conditions (1 bar) 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.