Fenuron
- Formula: C9H12N2O
- Molecular weight: 164.2044
- IUPAC Standard InChI: InChI=1S/C9H12N2O/c1-11(2)9(12)10-8-6-4-3-5-7-8/h3-7H,1-2H3,(H,10,12)
- IUPAC Standard InChIKey: XXOYNJXVWVNOOJ-UHFFFAOYSA-N
- CAS Registry Number: 101-42-8
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
View 3d structure (requires JavaScript / HTML 5) - Other names: Urea, N,N-dimethyl-N'-phenyl-; Urea, 1,1-dimethyl-3-phenyl-; Dibar; Dybar; N-Phenyl-N',N'-dimethylurea; N,N-Dimethyl-N'-phenylurea; PUD (Herbicide); 1-Phenyl-3,3-dimethylurea; 1,1-Dimethyl-3-phenylurea; 3-Phenyl-1,1-dimethylurea; Fenidin; Fenulon; PDU; PUD; Falisilvan; Amicure UR; Dyhard RU 300; Dyhard UR 300; Fikure 62U; Omicure 94
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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 | -203. ± 4.2 | kJ/mol | Ccb | Selivanov and Konstantinov, 1975 | |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°solid | -5054.3 ± 4.2 | kJ/mol | Ccb | Selivanov and Konstantinov, 1975 |
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
AC - William E. Acree, Jr., James S. Chickos
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tfus | 406.38 | K | N/A | Donnelly, Drewes, et al., 1990 | Uncertainty assigned by TRC = 0.2 K; TRC |
| Tfus | 406.0 | K | N/A | Plato and Glasgow, 1969 | Uncertainty assigned by TRC = 0.2 K; TRC |
Enthalpy of fusion
| ΔfusH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 22.81 | 404.8 | DSC | Acree, 1991 | See also Donnelly, Drewes, et al., 1990, 2.; AC |
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: C9H12N2O = C7H5NO + C2H7N
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 134.2 ± 2.9 | kJ/mol | Eqk | Chimishkyan, Svetlova, et al., 1984 | solid phase |
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.
Selivanov and Konstantinov, 1975
Selivanov, V.D.; Konstantinov, I.I.,
Thermochemistry of chloroaryl isocyanates,
Russ. J. Phys. Chem. (Engl. Transl.), 1975, 49, 620-621. [all data]
Donnelly, Drewes, et al., 1990
Donnelly, J.R.; Drewes, L.A.; Johnson, R.L.; Munslow, W.D.; Knapp, K.K.; Sovocool, G.W.,
Purity and heat of fusion data for environmental standards as determined by differential scanning calorimetry,
Thermochim. Acta, 1990, 167, 2, 155, https://doi.org/10.1016/0040-6031(90)80476-F
. [all data]
Plato and Glasgow, 1969
Plato, C.; Glasgow, A.R., Jr.,
Differential scanning calorimetry as a general method for determining the purity and heat of fusion of high-purity organic chemicals. Application to 95 compounds,
Anal. Chem., 1969, 41, 2, 330, https://doi.org/10.1021/ac60271a041
. [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]
Donnelly, Drewes, et al., 1990, 2
Donnelly, J.R.; Drewes, L.A.; Johnson, R.L.; Munslow, W.D.; Knapp, K.K.; Sovocool, G.W.,
Purity and heat of fusion data for environmental standards as determined by differential scanning calorimetry,
Thermochimica Acta, 1990, 167, 2, 155-187, https://doi.org/10.1016/0040-6031(90)80476-F
. [all data]
Chimishkyan, Svetlova, et al., 1984
Chimishkyan, A.L.; Svetlova, L.P.; Leonova, T.V.; Gluyaev, N.D.,
Thermal decomposition of substituted ureas,
J. Gen. Chem. USSR, 1984, 54, 1317-1320. [all data]
Notes
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- 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 ΔfusH Enthalpy of fusion ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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