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) Copy

  
• IUPAC Standard InChIKey: YIKSCQDJHCMVMK-UHFFFAOYSA-N Copy
• 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
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• Information on this page:
  • Condensed phase thermochemistry data
  • Phase change data
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Gas phase ion energetics data
  • Mass spectrum (electron ionization)
• Data at other public NIST sites:
  • X-ray Photoelectron Spectroscopy Database, version 5.0
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Condensed 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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing

Constant pressure heat capacity of solid

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
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Enthalpy of sublimation

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.

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]

Bradley and Cleasby, 1953
Bradley, R.S.; Cleasby, T.G., The vapour pressure and lattice energy of hydrogen-bonded crystals. Part I. Oxamide, oxamic acid, and rubeanie acid, J. Chem. Soc., 1953, 1681-16. [all data]

De Wit, Van Miltenburg, et al., 1983
De Wit, H.G.M.; Van Miltenburg, J.C.; De Kruif, C.G., Thermodynamic properties of molecular organic crystals containing nitrogen, oxygen, and sulphur 1. Vapour pressures and enthalpies of sublimation, The Journal of Chemical Thermodynamics, 1983, 15, 7, 651-663, https://doi.org/10.1016/0021-9614(83)90079-4 . [all data]

Bradley and Cleasby, 1953, 2
Bradley, R.S.; Cleasby, T.G., 349. The vapour pressure and lattice energy of some aromatic ring compounds, J. Chem. Soc., 1953, 1690, https://doi.org/10.1039/jr9530001690 . [all data]

Jones, 1960
Jones, A.H., Sublimation Pressure Data for Organic Compounds., J. Chem. Eng. Data, 1960, 5, 2, 196-200, https://doi.org/10.1021/je60006a019 . [all data]

Cox and Pilcher, 1970, 2
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press Inc., London, 1970, 643. [all data]

Notes

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• 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
  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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