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Pyridine, 2,5-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, Chris Muzny, director
DH - Eugene S. Domalski and Elizabeth D. Hearing
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tboil431.2KN/AWeast and Grasselli, 1989BS
Tboil429.9KN/AJankun-Pinska, 1964Uncertainty assigned by TRC = 0.3 K; TRC
Tboil426.65KN/AProstakov, Gaivoronskaya, et al., 1963Uncertainty assigned by TRC = 3. K; TRC
Tboil429.15KN/AFarberov, Kut'in, et al., 1961Uncertainty assigned by TRC = 2. K; TRC
Tboil426.25KN/AKyte, Jeffery, et al., 1960Uncertainty assigned by TRC = 1.5 K; TRC
Quantity Value Units Method Reference Comment
Tfus259.070KN/ASteele, Chirico, et al., 1986DH
Tfus257.15KN/AKyte, Jeffery, et al., 1960Uncertainty assigned by TRC = 0.5 K; TRC
Tfus257.61KN/ACoulson, Cox, et al., 1959Uncertainty assigned by TRC = 0.03 K; TRC
Quantity Value Units Method Reference Comment
Ttriple259.07KN/AChirico, Hossenlopp, et al., 1994Uncertainty assigned by TRC = 0.01 K; TRC
Quantity Value Units Method Reference Comment
Tc644.16KN/AAmbrose, Cox, et al., 1960Uncertainty assigned by TRC = 0.3 K; Visual, PRT, IPTS-48; TRC
Tc644.15KN/ACox, 1960Uncertainty assigned by TRC = 1. K; measured by R. Townsend to be pub. later; TRC
Quantity Value Units Method Reference Comment
Deltavap47.82kJ/molVCox, 1960ALS

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Method Reference Comment
44.4340.EBSteele, Chirico, et al., 1995Based on data from 330. - 471. K.; AC
41.9380.EBSteele, Chirico, et al., 1995Based on data from 330. - 471. K.; AC
39.4420.EBSteele, Chirico, et al., 1995Based on data from 330. - 471. K.; AC
36.5460.EBSteele, Chirico, et al., 1995Based on data from 330. - 471. K.; AC
42.8373.A,MGStephenson and Malanowski, 1987Based on data from 358. - 431. K. See also Herington and Martin, 1953 and Kkykj and Repas, 1973.; 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
358.3 - 430.54.259361574.069-60.039Herington and Martin, 1953, 2Coefficents calculated by NIST from author's data.

Enthalpy of fusion

DeltafusH (kJ/mol) Temperature (K) Reference Comment
14.64259.1Chirico, Hossenlopp, et al., 1994, 2AC

Temperature of phase transition

Ttrs (K) Initial Phase Final Phase Reference Comment
182.200crystaline, IIcrystaline, ISteele, Chirico, et al., 1986DH

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.

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]

Jankun-Pinska, 1964
Jankun-Pinska, J., Liquid-liquid equilibrium in series of ternary systems formed by pyridine bases, benzene and water. II. ternary systems: 2,4-lutidine-benzene-water, 2,5-lutidine-benzene-water and 2,6-lutidine-b, Bull. Acad. Pol. Sci., Ser. Sci. Chim., 1964, 12, 843. [all data]

Prostakov, Gaivoronskaya, et al., 1963
Prostakov, N.S.; Gaivoronskaya, L.A.; Mikheeva, N.N.; Filippov, N.P., Substituted Pyridines: 2,5-Dimethyl-4-alkylpyridines, Zh. Obshch. Khim., 1963, 33, 2928. [all data]

Farberov, Kut'in, et al., 1961
Farberov, M.I.; Kut'in, A.M.; Ustavshchikov, V.F., The conditions of 2-methyl-5-vinylprydine synthesis, Zh. Prikl. Khim. (Leningrad), 1961, 34, 632. [all data]

Kyte, Jeffery, et al., 1960
Kyte, C.T.; Jeffery, G.H.; Vogel, A.I., Physical Properties and Chem. Constitution XXVII. Pyridine Derivatives, J. Chem. Soc., 1960, 1960, 4454. [all data]

Steele, Chirico, et al., 1986
Steele, W.V.; Chirico, R.D.; Collier, W.B.; Hossenlopp, I.A.; Nguyen, A.; Strube, M.M., Thermochemical and thermophysical properties of organic nitrogen compounds found in fossil materials, NIPER Report, 1986, 188, 112p. [all data]

Coulson, Cox, et al., 1959
Coulson, E.A.; Cox, J.D.; Herington, E.F.G.; Martin, J.F., The Preparation and Physical Properties of the Pure Lutidines, J. Chem. Soc., 1959, 1959, 1934. [all data]

Chirico, Hossenlopp, et al., 1994
Chirico, R.D.; Hossenlopp, I.A.; Gammon, B.E.; Knipmeyer, S.E.; Steele, W.V., Heat capacities of the six dimethylpyridines between the temperatures 10 K and 445 K and methyl-group rotational barriers in the solid state a,b, J. Chem. Thermodyn., 1994, 26, 11, 1187, https://doi.org/10.1006/jcht.1994.1138 . [all data]

Ambrose, Cox, et al., 1960
Ambrose, D.; Cox, J.D.; Townsend, R., The critical temperatures of forty organic compounds, Trans. Faraday Soc., 1960, 56, 1452. [all data]

Cox, 1960
Cox, J.D., The second virial coefficients, latent heats of vaporization and heats of formation of the lutidines, Trans. Faraday Soc., 1960, 56, 959. [all data]

Steele, Chirico, et al., 1995
Steele, W.V.; Chirico, R.D.; Nguyen, A.; Knipmeyer, S.E., Vapor pressures, high-temperature heat capacities, critical properties, derived thermodynamic functions, and barriers to methyl-group rotation, for the six dimethylpyridines, The Journal of Chemical Thermodynamics, 1995, 27, 3, 311-334, https://doi.org/10.1006/jcht.1995.0030 . [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]

Herington and Martin, 1953
Herington, E.F.G.; Martin, J.F., Vapour pressures of pyridine and its homologues, Trans. Faraday Soc., 1953, 49, 154, https://doi.org/10.1039/tf9534900154 . [all data]

Kkykj and Repas, 1973
Kkykj, J.; Repas, M., Petrochemia, 1973, 13, 179. [all data]

Herington and Martin, 1953, 2
Herington, E.F.G.; Martin, J.F., Vapour Pressures of Pyridine and its Homologues, Trans. Faraday Soc., 1953, 49, 154-162, https://doi.org/10.1039/tf9534900154 . [all data]

Chirico, Hossenlopp, et al., 1994, 2
Chirico, R.D.; Hossenlopp, I.A.; Gammon, B.E.; Knipmeyer, S.E.; Steele, W.V., Heat capacities of the six dimethylpyridines between the temperatures 10 K and 445 K and methyl-group rotational barriers in the solid state a,b, The Journal of Chemical Thermodynamics, 1994, 26, 11, 1187-1218, https://doi.org/10.1006/jcht.1994.1138 . [all data]


Notes

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