Urea, N,N'-diphenyl-
- Formula: C13H12N2O
- Molecular weight: 212.2472
- IUPAC Standard InChI: InChI=1S/C13H12N2O/c16-13(14-11-7-3-1-4-8-11)15-12-9-5-2-6-10-12/h1-10H,(H2,14,15,16)
- IUPAC Standard InChIKey: GWEHVDNNLFDJLR-UHFFFAOYSA-N
- CAS Registry Number: 102-07-8
- 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: Carbanilide; s-Diphenylurea; N-Phenyl-N'-phenylurea; N,N'-Diphenylurea; sym-Diphenylurea; 1,3-Diphenylurea; Acardite I; Urea, 1,3-diphenyl-; USAF EK-534; Acardite; N,N'-Difenylmocovina; Karbanilid; Diphenylurea; Diphenylcarbamide; 1,3-Diphenylcarbamide; AD 30; NSC 227401
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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:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tboil | 535.2 | K | N/A | Weast and Grasselli, 1989 | BS |
| Quantity | Value | Units | Method | Reference | Comment |
| Tfus | 512.1 | K | N/A | Ferro and DellaGatta, 1987 | Uncertainty assigned by TRC = 3. K; TRC |
| Tfus | 510.15 | K | N/A | Sabatier and Mailhe, 1909 | Uncertainty assigned by TRC = 2. K; TRC |
Enthalpy of sublimation
| ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 152. ± 6. | 445. to 484. | TE | Ferro and Della Gatta, 1987 | AC |
Enthalpy of fusion
| ΔfusH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 34.620 | 512.1 | N/A | Ferro and Della Gatta, 1987 | DH |
| 34.62 | 512.1 | N/A | Domalski and Hearing, 1996 | See also Acree, 1991.; AC |
Entropy of fusion
| ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 66.5 | 512.1 | Ferro and Della Gatta, 1987 | DH |
References
Go To: Top, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]
Ferro and DellaGatta, 1987
Ferro, D.; DellaGatta, G.,
Enthalpies of Subl. and Fusion of Monophenyl and Diphenyl-1,3-urea,
Thermochim. Acta, 1987, 122, 189. [all data]
Sabatier and Mailhe, 1909
Sabatier, P.; Mailhe, A.,
New Applications of the General Method of Hydrogenation with Various Metals,
Ann. Chim. Phys., 1909, 16, 70. [all data]
Ferro and Della Gatta, 1987
Ferro, D.; Della Gatta, G.,
Enthalpies of sublimation and fusion of monophenylurea and diphenyl-1,3-urea,
Thermochim. Acta, 1987, 122, 189-195. [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]
Acree, 1991
Acree, William E.,
Thermodynamic properties of organic compounds: enthalpy of fusion and melting point temperature compilation,
Thermochimica Acta, 1991, 189, 1, 37-56, https://doi.org/10.1016/0040-6031(91)87098-H
. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion ΔsubH Enthalpy of sublimation - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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