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Azobenzene, (E)-

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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, Kenneth Kroenlein director
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.

Quantity Value Units Method Reference Comment
Tfus339.990KN/ADonnelly, Drewes, et al., 1990Uncertainty assigned by TRC = 0.2 K; TRC
Tfus340.50KN/ACingolani and Berchiesi, 1974Uncertainty assigned by TRC = 0.5 K; TRC
Tfus341.KN/APadoa, 1919Uncertainty assigned by TRC = 1. K; TRC
Tfus339.15KN/ABruner, 1894Uncertainty assigned by TRC = 0.6 K; TRC
Tfus342.20KN/AEykman, 1889Uncertainty assigned by TRC = 1. K; TRC
Quantity Value Units Method Reference Comment
Ttriple341.KN/ASteele, Chirico, et al., 1996Uncertainty assigned by TRC = 2. K; TRC
Ttriple341.06KN/ABouwstra, deLeeuw, et al., 1985Uncertainty assigned by TRC = 0.02 K; TRC
Ttriple341.03KN/Avan Miltenburg and Bouwstra, 1984Uncertainty assigned by TRC = 0.02 K; TRC
Quantity Value Units Method Reference Comment
Tc830.KN/ASteele, Chirico, et al., 1996Uncertainty assigned by TRC = 3. K; TRC
Quantity Value Units Method Reference Comment
Pc44.00barN/ASteele, Chirico, et al., 1996Uncertainty assigned by TRC = 3.50 bar; from extraploation of obs. vapor pressures to Tc; TRC
Quantity Value Units Method Reference Comment
rhoc1.73mol/lN/ASteele, Chirico, et al., 1996Uncertainty assigned by TRC = 0.082 mol/l; TRC
Quantity Value Units Method Reference Comment
Deltavap72.8 ± 0.7kJ/molEBSteele, Chirico, et al., 1996Based on data from 436. - 626. K.; AC
Quantity Value Units Method Reference Comment
Deltasub93.8 ± 0.4kJ/molAVGN/AAverage of 8 values; Individual data points

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Method Reference Comment
62.3391.AStephenson and Malanowski, 1987Based on data from 376. - 566. K. See also Stull, 1947.; AC

Enthalpy of sublimation

DeltasubH (kJ/mol) Temperature (K) Method Reference Comment
92.1 ± 0.9319.TE,MEBouwstra, Oonk, et al., 1984Based on data from 298. - 341. K.; AC
96.9 ± 0.8308.TEDe Kruif and Van Ginkel, 1977Based on data from 299. - 317. K.; AC
94.9 ± 0.8308.MEDe Kruif and Van Ginkel, 1977Based on data from 299. - 317. K.; AC
93.8 ± 1.2323.MESchulte, Petrick, et al., 1977Based on data from 298. - 347. K.; AC

Enthalpy of fusion

DeltafusH (kJ/mol) Temperature (K) Method Reference Comment
22.53341.1N/ADomalski and Hearing, 1996AC
22.65341.9DTASchulte, Petrick, et al., 1977AC

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


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.

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]

Cingolani and Berchiesi, 1974
Cingolani, A.; Berchiesi, G., Thermodynamic properties of organic compounds. 1. A DSC study of phase transitions in aliphatic dicarboxylic acids, J. Therm. Anal., 1974, 6, 87-90. [all data]

Padoa, 1919
Padoa, M., Atti Accad. Naz. Lincei, Cl. Sci. Fis., Mat. Nat., Rend., 1919, 28, 239. [all data]

Bruner, 1894
Bruner, L., The heats of fusion of some organic compounds, Ber. Dtsch. Chem. Ges., 1894, 27, 2102. [all data]

Eykman, 1889
Eykman, J.F., Z. Phys. Chem., Stoechiom. Verwandtschaftsl., 1889, 4, 497. [all data]

Steele, Chirico, et al., 1996
Steele, W.V.; Chirico, R.D.; Knipmeyer, S.E.; Nguyen, A.; Smith, N.K., Thermodynamic properties and ideal-gas enthalpies of formation for butyl vinyl ether, 1,2-dimethoxyethane, methyl glycolate, bicyclo[2.2.1]hept-2-ene, 5-vinylbicyclo[2.2.1]hept-2-ene, trans-azobenzene, butyl acrylate, di-tert-butyl ether, and hexane-1,6-diol, J. Chem. Eng. Data, 1996, 41, 1285-1302. [all data]

Bouwstra, deLeeuw, et al., 1985
Bouwstra, J.A.; deLeeuw, V.V.; van Miltenburg, J.C., Properties of mixed-crystalline organic material prepared by zone levelling 4. melting properties and excess enthalpies of (trans-azobenzene + trans-stilbene), J. Chem. Thermodyn., 1985, 17, 685. [all data]

van Miltenburg and Bouwstra, 1984
van Miltenburg, J.C.; Bouwstra, J.A., Thermodynamic properties of trans-azobenzene and trans-stilbene, J. Chem. Thermodyn., 1984, 16, 61-5. [all data]

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]

Stull, 1947
Stull, Daniel R., Vapor Pressure of Pure Substances. Organic and Inorganic Compounds, Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022 . [all data]

Bouwstra, Oonk, et al., 1984
Bouwstra, J.A.; Oonk, H.A.J.; Blok, J.G.; De Kruif, C.G., Properties of mixed crystalline organic material prepared by zone levelling III. Vapour pressures of (trans-azobenzene + trans-stilbene), The Journal of Chemical Thermodynamics, 1984, 16, 5, 403-409, https://doi.org/10.1016/0021-9614(84)90194-0 . [all data]

De Kruif and Van Ginkel, 1977
De Kruif, C.G.; Van Ginkel, C.H.D., Torsion-weighing effusion vapour-pressure measurements on organic compounds, The Journal of Chemical Thermodynamics, 1977, 9, 8, 725-730, https://doi.org/10.1016/0021-9614(77)90015-5 . [all data]

Schulte, Petrick, et al., 1977
Schulte, F.W.; Petrick, H.-J.; Cammenga, H.K.; Klinge, H., Z. Phys. Chem. (Frankfurt), 1977, 107, 1. [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]


Notes

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