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Benzene, 1-methyl-4-nitro-


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

Quantity Value Units Method Reference Comment
Tboil511. ± 4.KAVGN/AAverage of 7 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus325. ± 2.KAVGN/AAverage of 15 out of 17 values; Individual data points
Quantity Value Units Method Reference Comment
Ttriple324.780KN/AAndon and Connett, 1980Uncertainty assigned by TRC = 0.002 K; TRC
Quantity Value Units Method Reference Comment
Deltasub74.8 ± 1.0kJ/molGSWidegren and Bruno, 2010Based on data from 283. - 313. K.; AC
Deltasub79. ± 3.kJ/molVLenchitz, Velicky, et al., 1971ALS
Deltasub79.1 ± 2.5kJ/molMELenchitz, Velicky, et al., 1971AC
Deltasub79.1kJ/molN/ALenchitz and Velicky, 1970Based on data from 298. - 310. K.; AC

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Method Reference Comment
52.8422.EBAim, 1994Based on data from 407. - 457. K.; AC
49.8438.AStephenson and Malanowski, 1987Based on data from 423. - 512. K.; AC
54.2402.N/ALevin and Shtern, 1938Based on data from 387. - 493. K. See also Aim, 1994.; 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
420.86 - 506.404.09241699.858-90.468Dreisbach and Shrader, 1949Coefficents calculated by NIST from author's data.

Enthalpy of fusion

DeltafusH (kJ/mol) Temperature (K) Reference Comment
16.81324.8Acree, 1991AC

Enthalpy of phase transition

DeltaHtrs (kJ/mol) Temperature (K) Initial Phase Final Phase Reference Comment
16.811324.788crystaline, IliquidAndon and Connett, 1980, 2DH
70.781318.5crystaline, IIliquidRichardson and Savill, 1979Metastable form.; DH
69.802324.7crystaline, IliquidRichardson and Savill, 1979DH

Entropy of phase transition

DeltaStrs (J/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
51.76324.788crystaline, IliquidAndon and Connett, 1980, 2DH
222.2318.5crystaline, IIliquidRichardson and Savill, 1979Metastable; DH
215.0324.7crystaline, IliquidRichardson and Savill, 1979DH

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.

Andon and Connett, 1980
Andon, R.J.L.; Connett, J.E., Calibrants for thermal analysis. measurement of their enthalpies of fusion by adiabatic calorimetry., Thermochim. Acta, 1980, 42, 241. [all data]

Widegren and Bruno, 2010
Widegren, Jason A.; Bruno, Thomas J., Gas Saturation Vapor Pressure Measurements of Mononitrotoluene Isomers from (283.15 to 313.15) K «8224», J. Chem. Eng. Data, 2010, 55, 1, 159-164, https://doi.org/10.1021/je900293j . [all data]

Lenchitz, Velicky, et al., 1971
Lenchitz, C.; Velicky, R.W.; Silvestro, G.; Schlosberg, L.P., Thermodynamic properties of several nitrotoluenes, J. Chem. Thermodyn., 1971, 3, 689-692. [all data]

Lenchitz and Velicky, 1970
Lenchitz, Charles; Velicky, Rodolf W., Vapor pressure and heat of sublimation of three nitrotoluenes, J. Chem. Eng. Data, 1970, 15, 3, 401-403, https://doi.org/10.1021/je60046a022 . [all data]

Aim, 1994
Aim, Karel, Saturated Vapor Pressure Measurements on Isomeric Mononitrotoluenes at Temperatures between 380 and 460 K, J. Chem. Eng. Data, 1994, 39, 3, 591-594, https://doi.org/10.1021/je00015a044 . [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]

Levin and Shtern, 1938
Levin, E.; Shtern, I., Educ. Psychol. Meas., 1938, 11, 426. [all data]

Dreisbach and Shrader, 1949
Dreisbach, R.R.; Shrader, S.A., Vapor Pressure--Temperature Data on Some Organic Compounds, Ind. Eng. Chem., 1949, 41, 12, 2879-2880, https://doi.org/10.1021/ie50480a054 . [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]

Andon and Connett, 1980, 2
Andon, R.J.L.; Connett, J.E., Calibrants for thermal analysis. Measurement of their enthalpies of fusion by adiabatic calorimetry, Thermochim. Acta, 1980, 42, 241-247. [all data]

Richardson and Savill, 1979
Richardson, M.J.; Savill, N.G., Free energy changes by differential scanning calorimetry: application to a low energy but metastable form of p-nitrotoluene, Thermochim. Acta, 1979, 30, 327-337. [all data]


Notes

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