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1,3,5-Triazine

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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
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Tboil387.2KN/AWeast and Grasselli, 1989BS
Quantity Value Units Method Reference Comment
Ttriple353.44KN/AVan Bommel, van Miltenburg, et al., 1988Crystal phase 1 phase; Uncertainty assigned by TRC = 0.02 K; TRC
Ttriple353.9KN/ABriels and van Miltenburg, 1979Uncertainty assigned by TRC = 0.2 K; TRC
Quantity Value Units Method Reference Comment
Deltavap38.8 ± 1.9kJ/molCGCLipkind and Chickos, 2009Based on data from 342. - 373. K. See also Lipkind and Chickos, 2009, 2.; AC
Deltavap55.2 ± 0.1kJ/molVJohnson and Prosen, 1985Private communication; ALS
Quantity Value Units Method Reference Comment
Deltasub54.18 ± 0.19kJ/molCBystrom, 1982ALS
Deltasub54.2kJ/molN/ABystrom, 1982DRB
Deltasub54.2 ± 0.2kJ/molN/ABystrom, 1982AC
Deltasub56.5 ± 2.1kJ/molVIniguez, Lopez, et al., 1982ALS

Enthalpy of sublimation

DeltasubH (kJ/mol) Temperature (K) Method Reference Comment
58.2222.TE,MEDe Wit, Van Miltenburg, et al., 1983Based on data from 212. - 229. K.; AC

Enthalpy of fusion

DeltafusH (kJ/mol) Temperature (K) Reference Comment
14.56353.4Acree, 1991AC

Enthalpy of phase transition

DeltaHtrs (kJ/mol) Temperature (K) Initial Phase Final Phase Reference Comment
0.0740197.7crystaline, IIcrystaline, Ivan Bommel, van Miltenburg, et al., 1988First order treatment from 175 K H = 127.4 J/mol First order treatment from 150 K H = 362.8 J/mol Second order treatment; DH
14.560353.44crystaline, Iliquidvan Bommel, van Miltenburg, et al., 1988DH
14.584353.9crystaline, IliquidBriels and van Miltenburg, 1979, 2DH

Entropy of phase transition

DeltaStrs (J/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
41.21353.9crystaline, IliquidBriels and van Miltenburg, 1979, 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.

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]

Van Bommel, van Miltenburg, et al., 1988
Van Bommel, M.J.; van Miltenburg, J.C.; Schuijff, A., Heat Capacity Measurements and Thermodynamic Functions of 1,3,5- Triazine and 1,3,5-Trioxane, J. Chem. Thermodyn., 1988, 20, 397-403. [all data]

Briels and van Miltenburg, 1979
Briels, W.J.; van Miltenburg, J.C., s-Triazine:heat capacities between 130 and 380 K, the solid state transition, and the enthalpy of melting, J. Chem. Phys., 1979, 70, 1064. [all data]

Lipkind and Chickos, 2009
Lipkind, Dmitri; Chickos, James S., An examination of the vaporization enthalpies and vapor pressures of pyrazine, pyrimidine, pyridazine, and 1,3,5-triazine, Struct Chem, 2009, 20, 1, 49-58, https://doi.org/10.1007/s11224-008-9389-5 . [all data]

Lipkind and Chickos, 2009, 2
Lipkind, D.; Chickos, J.S., , Abstract from 38th Great Lakes Regional Meeting of the American Chemical Society, May 13-16, Chicago, IL, 2009, GLRM-275. [all data]

Johnson and Prosen, 1985
Johnson, W.H.; Prosen, E.J., Determination of the enthalpies of combustion and formation of substituted triazines in an adiabatic rotating bomb calorimeter, J. Res. NBS, 1985, 90, 295-303. [all data]

Bystrom, 1982
Bystrom, K., The stabilization energy of 1,3,5-triazine derived from measurements of the enthalpies of combustion and sublimation, J. Chem. Thermodyn., 1982, 14, 865-870. [all data]

Iniguez, Lopez, et al., 1982
Iniguez, J.C.; Lopez, M.E.; McEachern, D.M., Vapor pressure and sublimation enthalpy of s-triazine, Rev. Soc. Quim. Mex., 1982, 26, 122-124. [all data]

De Wit, Van Miltenburg, et al., 1983
De Wit, H.G.M.; Van Miltenburg, J.C.; De Kruif, C.G., Thermodynamic properties of molecular organic crystals containing nitrogen, oxygen, and sulphur 1. Vapour pressures and enthalpies of sublimation, The Journal of Chemical Thermodynamics, 1983, 15, 7, 651-663, https://doi.org/10.1016/0021-9614(83)90079-4 . [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]

van Bommel, van Miltenburg, et al., 1988
van Bommel, M.J.; van Miltenburg, J.C.; Schuijff, A., Heat-capacity measurements and thermodynamic functions of 1,3,5-triazine and 1,3,5-trioxane, J. Chem. Thermodynam., 1988, 20, 397-403. [all data]

Briels and van Miltenburg, 1979, 2
Briels, W.J.; van Miltenburg, J.C., s-Triazine: heat capacities between 130 and 380 K, the solid state transition, and the enthalpy of melting, J. Chem. Phys., 1979, 70, 1064-1066. [all data]


Notes

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