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Naphthalene, 2,7-dimethyl-

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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, Kenneth Kroenlein director
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Tboil536.2KN/AAldrich Chemical Company Inc., 1990BS
Tboil538.KN/ACoulson, 1935Uncertainty assigned by TRC = 4. K; TRC
Quantity Value Units Method Reference Comment
Tfus370.15KN/ALuther and Riechel, 1950Uncertainty assigned by TRC = 0.5 K; TRC
Quantity Value Units Method Reference Comment
Ttriple368.81KN/AFinke, Messerly, et al., 1977Uncertainty assigned by TRC = 0.02 K; TRC
Ttriple368.81KN/AOsborn and Douslin, 1975Uncertainty assigned by TRC = 0.03 K; TRC
Quantity Value Units Method Reference Comment
Tc775. ± 2.KN/ATsonopoulos and Ambrose, 1995 
Tc775.KN/AChirico, Knipmeyer, et al., 1993Uncertainty assigned by TRC = 2. K; TRC
Quantity Value Units Method Reference Comment
Pc32. ± 2.barN/ATsonopoulos and Ambrose, 1995 
Pc32.34barN/AChirico, Knipmeyer, et al., 1993Uncertainty assigned by TRC = 1.00 bar; TRC
Quantity Value Units Method Reference Comment
Vc0.601l/molN/ATsonopoulos and Ambrose, 1995 
Quantity Value Units Method Reference Comment
rhoc1.7 ± 0.2mol/lN/ATsonopoulos and Ambrose, 1995 
rhoc1.63mol/lN/AChirico, Knipmeyer, et al., 1993Uncertainty assigned by TRC = 0.19 mol/l; TRC

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Method Reference Comment
57.3400.N/AChirico, Knipmeyer, et al., 1993, 2AC
54.8440.N/AChirico, Knipmeyer, et al., 1993, 2AC
52.2480.N/AChirico, Knipmeyer, et al., 1993, 2AC
49.5520.N/AChirico, Knipmeyer, et al., 1993, 2AC
46.6560.N/AChirico, Knipmeyer, et al., 1993, 2AC
58.5384.AStephenson and Malanowski, 1987Based on data from 369. - 400. K. See also Osborn and Douslin, 1975, 2 and Boublik, Fried, et al., 1984.; AC
59.5368.8IPFinke, Messerly, et al., 1977, 2Based on data from 369. - 398. K.; AC
58.6380.IPFinke, Messerly, et al., 1977, 2Based on data from 369. - 398. K.; AC
58.1390.IPFinke, Messerly, et al., 1977, 2Based on data from 369. - 398. K.; AC

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

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Temperature (K) A B C Reference Comment
369. - 398.4.549192136.17-62.904Osborn and Douslin, 1975, 2Coefficents calculated by NIST from author's data.

Enthalpy of sublimation

DeltasubH (kJ/mol) Temperature (K) Method Reference Comment
84.6348.AStephenson and Malanowski, 1987Based on data from 333. - 368. K.; AC
84. ± 1.345.N/AFinke, Messerly, et al., 1977, 2Based on data from 340. - 369. K. See also Osborn and Douslin, 1975, 2.; AC
83.2369.BOsborn and Douslin, 1975, 2AC

Enthalpy of fusion

DeltafusH (kJ/mol) Temperature (K) Method Reference Comment
23.3513368.81N/AFinke, Messerly, et al., 1977, 2DH
22.2370.2DSCCheon and Kim, 2007AC
23.35368.8N/AAcree, 1991AC

Entropy of fusion

DeltafusS (J/mol*K) Temperature (K) Reference Comment
63.32368.81Finke, Messerly, et al., 1977, 2DH

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.

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

Coulson, 1935
Coulson, E.A., J. Chem. Soc., 1935, 1935, 77. [all data]

Luther and Riechel, 1950
Luther, H.; Riechel, C., The Raman Spectra of Polymethylnphthalenes, Z. Phys. Chem. (Leipzig), 1950, 195, 103. [all data]

Finke, Messerly, et al., 1977
Finke, H.L.; Messerly, J.F.; Lee, S.H.; Osborn, A.G.; Douslin, D.R., Comprehensive thermodynamic studies of seven aromatic hydrocarbons, J. Chem. Thermodyn., 1977, 9, 937. [all data]

Osborn and Douslin, 1975
Osborn, A.G.; Douslin, D.R., Vapor Pressure and Derived Enthalpies of Vaporization for Some Condensed Ring Hydrocarbons, J. Chem. Eng. Data, 1975, 20, 229-31. [all data]

Tsonopoulos and Ambrose, 1995
Tsonopoulos, C.; Ambrose, D., Vapor-Liquid Critical Properties of Elements and Compounds. 3. Aromatic Hydrocarbons, J. Chem. Eng. Data, 1995, 40, 547-558. [all data]

Chirico, Knipmeyer, et al., 1993
Chirico, R.D.; Knipmeyer, S.E.; Nguyen, A.; Steele, W.V., The thermodynamic properties to the temperature 700 K of naphthalene and of 2,7-dimethylnaphthalene, J. Chem. Thermodyn., 1993, 25, 1461-94. [all data]

Chirico, Knipmeyer, et al., 1993, 2
Chirico, R.D.; Knipmeyer, S.E.; Nguyen, A.; Steele, W.V., The thermodynamic properties to the temperature 700 K of naphthalene and of 2,7-dimethylnaphthalene, J. Chem. Thermodyn., 1993, 25, 1461-1494. [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]

Osborn and Douslin, 1975, 2
Osborn, Ann G.; Douslin, Donald R., Vapor pressures and derived enthalpies of vaporization for some condensed-ring hydrocarbons, J. Chem. Eng. Data, 1975, 20, 3, 229-231, https://doi.org/10.1021/je60066a022 . [all data]

Boublik, Fried, et al., 1984
Boublik, T.; Fried, V.; Hala, E., The Vapour Pressures of Pure Substances: Selected Values of the Temperature Dependence of the Vapour Pressures of Some Pure Substances in the Normal and Low Pressure Region, 2nd ed., Elsevier, New York, 1984, 972. [all data]

Finke, Messerly, et al., 1977, 2
Finke, H.L.; Messerly, J.F.; Lee, S.H.; Osborn, A.G.; Douslin, D.R., Comprehensive thermodynamic studies of seven aromatic hydrocarbons, J. Chem. Thermodyn., 1977, 9, 937-956. [all data]

Cheon and Kim, 2007
Cheon, Yang-Ho; Kim, Kwang-Joo, Solid-Liquid Equilibria of Binary Mixtures of Dimethylnaphthalene Isomers, J. Chem. Eng. Data, 2007, 52, 4, 1390-1393, https://doi.org/10.1021/je700088n . [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

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