Urea, phenyl-
- Formula: C7H8N2O
- Molecular weight: 136.1512
- IUPAC Standard InChIKey: LUBJCRLGQSPQNN-UHFFFAOYSA-N
- CAS Registry Number: 64-10-8
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Monophenylurea; N-Phenylurea; Phenylcarbamide; Phenylurea; Stabilisator VH; Stabilizer VH; VH; 1-Phenylurea; PC; NSC 2781; Urea, N-phenyl
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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 | 511.2 | K | N/A | Weast and Grasselli, 1989 | BS |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 420.6 | K | N/A | Ferro and DellaGatta, 1987 | Uncertainty assigned by TRC = 0.3 K; TRC |
Enthalpy of sublimation
ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
136. ± 6. | 406. | TE | Ferro and Della Gatta, 1987 | Based on data from 392. to 412. K.; AC |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
23.680 | 420.6 | Ferro and Della Gatta, 1987 | DH |
23.68 | 420.6 | Acree, 1991 | AC |
Entropy of fusion
ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
56.3 | 420.6 | 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]
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]
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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