Urea, tetraethyl-

• Formula: C₉H₂₀N₂O
• Molecular weight: 172.2679
• IUPAC Standard InChI: InChI=1S/C9H20N2O/c1-5-10(6-2)9(12)11(7-3)8-4/h5-8H2,1-4H3 Copy

  
• IUPAC Standard InChIKey: UWHSPZZUAYSGTB-UHFFFAOYSA-N Copy
• CAS Registry Number: 1187-03-7
• 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: Tetraethylurea; 1,1,3,3-Tetraethylurea; Urea, 1,1,3,3-tetraethyl-; N,N,N',N'-Tetraethylurea
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Phase change data
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Condensed phase thermochemistry data
  • Mass spectrum (electron ionization)
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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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
AC - William E. Acree, Jr., James S. Chickos

Enthalpy of vaporization

Enthalpy of fusion

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.

Tavernier and Lamouroux, 1956
Tavernier, P.; Lamouroux, M., Meml. Poudres, 1956, 38, 65. [all data]

Kabo, Kozyro, et al., 1995
Kabo, G.Ya.; Kozyro, A.A.; Diky, V.V.; Simirsky, V.V., Additivity of Thermodynamic Properties of Organic Compounds in Crystalline State. 2. Heat Capacities and Enthalpies of Phase Transition of Alkyl Derivatives of Urea in Crystalline State, J. Chem. Eng. Data, 1995, 40, 371-93. [all data]

Kozyro, Simirskii, et al., 1990
Kozyro, A.A.; Simirskii, V.V.; Kabo, G.Ya.; Frenkel, M.L.; Krasulin, A.P.; Sevruk, V.M.; Sokolov, N.A., The additivity of the thermodynamic properties of tetra-alkyl derivatives of carbamide, Russ. J. Phys. Chem. (Engl. Transl.), 1990, 64, 1274-1275. [all data]

Kozyro, Simirskii, et al., 1990, 2
Kozyro, A.A.; Simirskii, V.V.; Kabo, G.Ya.; Frenkel, M.L.; Krasulin, A.P.; Sevruk, V.M.; Sokolov, N.A., The additivity of the thermodynamic properties of tetra-alkyl derivatives of carbamide, Zhur. Fiz. Khim., 1990, 64(9), 2360-2365. [all data]

Kozyro, Simirskii, et al., 1990, 3
Kozyro, A.A.; Simirskii, V.V.; Kabo, G.Y.; Frenkel, M.L.; Krasulin, A.P.; Sevruk, V.M.; Sokolov, N.A., Additivity of the thermochemical characteristics of tetraalklyl-substituted carbamides, Zh. Fiz. Khim., 1990, 64, 2360. [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]

Kabo, Kozyro, et al., 1995, 2
Kabo, Gennady J.; Kozyro, Alexander A.; Diky, Vladimir V.; Simirsky, Vladimir V., Additivity of Thermodynamic Properties of Organic Compounds in Crystalline State. 2. Heat Capacities and Enthalpies of Phase Transition of Alkyl Derivatives of Urea in Crystalline State, J. Chem. Eng. Data, 1995, 40, 2, 371-393, https://doi.org/10.1021/je00018a005 . [all data]

Notes

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• Symbols used in this document:
  

  Tboil	Boiling point
  Ttriple	Triple point temperature
  ΔfusH	Enthalpy of fusion
  ΔvapH	Enthalpy of vaporization

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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