Urea, N,N-diphenyl-
- Formula: C13H12N2O
- Molecular weight: 212.2472
- IUPAC Standard InChIKey: XKAFKUGMXFMRCC-UHFFFAOYSA-N
- CAS Registry Number: 603-54-3
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Diphenyl urea; Urea, 1,1-diphenyl-; 1,1-Diphenylurea; Asym-diphenylurea
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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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°solid | -122.7 ± 3.4 | kJ/mol | Ccb | Medard and Thomas, 1952 | Reanalyzed by Cox and Pilcher, 1970, Original value = -110. kJ/mol; Author's hf291_condensed=-32.6 kcal/mol |
ΔfH°solid | -54.4 | kJ/mol | Ccb | Schmidt and Becker, 1933 | |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°solid | -6707.9 ± 3.3 | kJ/mol | Ccb | Medard and Thomas, 1952 | Reanalyzed by Cox and Pilcher, 1970, Original value = -6720.3 kJ/mol; Author's hf291_condensed=-32.6 kcal/mol |
ΔcH°solid | -6782.7 | kJ/mol | Ccb | Schmidt and Becker, 1933 |
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 by: Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tfus | 463.6 | K | N/A | Medard and Thomas, 1952, 2 | Uncertainty assigned by TRC = 0.00001 K |
Reaction 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
By formula: C7H5NO + C6H7N = C13H12N2O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -82.5 ± 2.0 | kJ/mol | Cm | Kiselev, Malkov, et al., 1989 | liquid phase; solvent: Dioxane |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Medard and Thomas, 1952
Medard, L.; Thomas, M.,
Determination des chaleurs de combustion de douze composes organiques utilises dans les poudres et enplosies,
Mem. Poudres, 1952, 34, 421-442. [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]
Schmidt and Becker, 1933
Schmidt, V.A.; Becker, F.,
Die Bildungswarme von Nitrocellulofen, Nitroglycerin und anderen widuigen Beltandteilen von Treibmitteln,
Z. Gesamte Schiess Sprengstoffwes., 1933, 33, 280-282. [all data]
Medard and Thomas, 1952, 2
Medard, L.; Thomas, M.,
Meml. Poudres, 1952, 34, 421. [all data]
Kiselev, Malkov, et al., 1989
Kiselev, V.D.; Malkov, V.B.; Murzin, D.G.; Shakirov, I.M.; Konovalov, A.I.,
Thermochemical study of the reaction of isocyanate with amines,
Dokl. Phys. Chem. (Engl. Transl.), 1989, 308, 711-713, In original 111. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, References
- Symbols used in this document:
Tfus Fusion (melting) point ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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