4,4'-Dichlorobenzophenone

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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
Tboil626.2KN/AAldrich Chemical Company Inc., 1990BS
Quantity Value Units Method Reference Comment
Tfus420.0KN/APlato, 1972Uncertainty assigned by TRC = 0.2 K; TRC
Quantity Value Units Method Reference Comment
Δsub117.5 ± 0.3kJ/molMERibeiro da Silva, Amaral, et al., 2007Based on data from 349. to 367. K.; AC

Enthalpy of sublimation

ΔsubH (kJ/mol) Temperature (K) Method Reference Comment
114.5 ± 0.3358.MERibeiro da Silva, Amaral, et al., 2007Based on data from 349. to 367. K.; AC

Enthalpy of fusion

ΔfusH (kJ/mol) Temperature (K) Method Reference Comment
30.12420.DSCAcree, 1991See also Plato, 1972, 2.; AC
21.65338.4DSCDonnelly, Drewes, et al., 1990the entry for Ref. Donnelly, Drewes, et al., 1990 may likely be in error. The authors give the name of the compound as 4,4′-dichlorobenzophenone in the paper; however, they give the CAS Registry number of [85-29-0] which corresponds to 2,4′-dichlorobenzophenone. The observed melting point temperature of 338.4 K is more in line with the melting point temperature of 2,4′-dichlorobenzophenone; AC

Enthalpy of phase transition

ΔHtrs (kJ/mol) Temperature (K) Initial Phase Final Phase Reference Comment
0.146186.1crystaline, IIIcrystaline, IIEcolivet, Bertault, et al., 1987DH
0.251189.5crystaline, IIcrystaline, IEcolivet, Bertault, et al., 1987DH

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

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Aldrich Chemical Company Inc., 1990
Aldrich Chemical Company Inc., Catalog Handbook of Fine Chemicals, Aldrich Chemical Company, Inc., Milwaukee WI, 1990, 1. [all data]

Plato, 1972
Plato, C., DSC as a general method for determining purity and heat of fusion of high-purity organic chemicals, Anal. Chem., 1972, 44, 1531. [all data]

Ribeiro da Silva, Amaral, et al., 2007
Ribeiro da Silva, Manuel A.V.; Amaral, Luísa M.P.F.; Gomes, José R.B., Experimental and Computational Studies on the Molecular Energetics of Chlorobenzophenones, J. Phys. Chem. B, 2007, 111, 45, 13033-13040, https://doi.org/10.1021/jp076522j . [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]

Plato, 1972, 2
Plato, Candace., Differential scanning calorimetry as a general method for determining purity and heat of fusion of high-purity organic chemicals. Application to 64 compounds, Anal. Chem., 1972, 44, 8, 1531-1534, https://doi.org/10.1021/ac60316a049 . [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, Thermochimica Acta, 1990, 167, 2, 155-187, https://doi.org/10.1016/0040-6031(90)80476-F . [all data]

Ecolivet, Bertault, et al., 1987
Ecolivet, C.; Bertault, M.; Mierzejewski, A.; Collet, A., Brillouin scattering and calorimetric studies of structural phase transitions in anthracene-TCNB and p-dichlorobenzophenone, Stud. Phys. Theor. Chem., 1987, 46, 187-192. [all data]


Notes

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