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Benzenamine, 2,4-dimethyl-

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Condensed phase thermochemistry 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Deltafliquid-88.7kJ/molCcbLemoult, 1907 
Quantity Value Units Method Reference Comment
Deltacliquid-4655.5kJ/molCcbLemoult, 1907 

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

Quantity Value Units Method Reference Comment
Tboil491.2KN/AAldrich Chemical Company Inc., 1990BS
Tboil487.45KN/ABuehler, Wood, et al., 1932Uncertainty assigned by TRC = 0.5 K; TRC
Quantity Value Units Method Reference Comment
Tfus257.25KN/AWitschonke, 1954Metastable crystal phase; Uncertainty assigned by TRC = 1. K; TRC
Tfus259.35KN/AWitschonke, 1954Metastable crystal phase; Uncertainty assigned by TRC = 0.35 K; TRC
Tfus259.32KN/AWitschonke, 1954Crystal phase 1 phase; Uncertainty assigned by TRC = 0.8 K; TRC
Tfus261.05KN/AWitschonke, 1954Crystal phase 1 phase; Uncertainty assigned by TRC = 0.3 K; TRC
Tfus258.9KN/ABirch, Dean, et al., 1949Uncertainty assigned by TRC = 1. K; TRC

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Method Reference Comment
61.3 ± 0.6317.N/AVerevkin, 1997Based on data from 295. - 339. K.; AC
55.5398.AStephenson and Malanowski, 1987Based on data from 383. - 485. K.; AC
56.9341.N/AStull, 1947Based on data from 326. - 485. 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
325.9 - 484.75.180722293.277-41.261Stull, 1947Coefficents calculated by NIST from author's data.

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:


Gas phase ion energetics 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:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Ionization energy determinations

IE (eV) Method Reference Comment
7.4 ± 0.1CTSFarrell and Newton, 1966RDSH
7.65 ± 0.05PESzepes, Distefano, et al., 1974Vertical value; LLK

IR Spectrum

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Data compiled by: Coblentz Society, Inc.

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director


Mass spectrum (electron ionization)

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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 by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Mass spectrum
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Additional Data

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Owner NIST Mass Spectrometry Data Center
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin Japan AIST/NIMC Database- Spectrum MS-NW- 565
NIST MS number 228784

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Gas Chromatography

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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 by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Kovats' RI, non-polar column, isothermal

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Column type Active phase Temperature (C) I Reference Comment
CapillaryDB-1170.1167.01Kuhn, 200130. m/0.53 mm/3. «mu»m, He
CapillaryOV-101150.1145.7Cha and Lee, 1994Column length: 20. m; Column diameter: 0.5 mm
CapillaryOV-101180.1160.7Cha and Lee, 1994Column length: 20. m; Column diameter: 0.5 mm

Kovats' RI, polar column, isothermal

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Column type Active phase Temperature (C) I Reference Comment
CapillaryCarbowax 20M130.1960.Hedin, Thopson, et al., 1972N2; Column length: 15.24 m; Column diameter: 0.5 mm
PackedPEG-20M210.1976.Still, Evans, et al., 1972Chromosorb G; Column length: 3. m

Van Den Dool and Kratz RI, non-polar column, temperature ramp

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Column type Active phase I Reference Comment
CapillaryDB-11123.1Sun and Stremple, 200330. m/0.25 mm/0.25 «mu»m, He, 3. K/min; Tstart: 40. C; Tend: 325. C
CapillaryOV-11137.7Gautzsch and Zinn, 19968. K/min; Tstart: 35. C; Tend: 300. C
CapillaryDB-51167.Rostad and Pereira, 198630. m/0.26 mm/0.25 «mu»m, He, 50. C @ 4. min, 6. K/min, 300. C @ 20. min

Normal alkane RI, non-polar column, temperature ramp

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Column type Active phase I Reference Comment
CapillaryUltra-11131.Okumura, 199125. m/0.32 mm/0.25 «mu»m, He, 3. K/min; Tstart: 80. C; Tend: 260. C
CapillaryUltra-11136.Okumura, 199125. m/0.32 mm/0.25 «mu»m, He, 3. K/min; Tstart: 80. C; Tend: 260. C

Lee's RI, non-polar column, temperature ramp

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Column type Active phase I Reference Comment
CapillaryDB-5196.10Rostad and Pereira, 198630. m/0.26 mm/0.25 «mu»m, He, 50. C @ 4. min, 6. K/min, 300. C @ 20. min

References

Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, Notes

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

Lemoult, 1907
Lemoult, M.P., Recherches theoriques et experimentales sur les chaleurs de combustion et de formation des composes organiques, Ann. Chim. Phys., 1907, 12, 395-432. [all data]

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

Buehler, Wood, et al., 1932
Buehler, C.A.; Wood, J.H.; Hull, D.C.; Erwin, E.C., A Study of Molecular Organic Compounds. IV. The Molecular Organic Compounds of Phenol, their Parachors and Refractivities, J. Am. Chem. Soc., 1932, 54, 2398. [all data]

Witschonke, 1954
Witschonke, C.R., Freezing point and purity data for some organic compounds, Anal. Chem., 1954, 26, 562-4. [all data]

Birch, Dean, et al., 1949
Birch, S.F.; Dean, R.A.; Fidler, F.A.; Lowry, R.A., The preparation of the c(10) monocyclic aromatic hydrocarbons, J. Am. Chem. Soc., 1949, 71, 1362. [all data]

Verevkin, 1997
Verevkin, Sergey P., Thermochemistry of amines: experimental standard molar enthalpies of formation of some aliphatic and aromatic amines, The Journal of Chemical Thermodynamics, 1997, 29, 8, 891-899, https://doi.org/10.1006/jcht.1997.0212 . [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]

Stull, 1947
Stull, Daniel R., Vapor Pressure of Pure Substances. Organic and Inorganic Compounds, Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022 . [all data]

Farrell and Newton, 1966
Farrell, P.G.; Newton, J., Ionization potentials of primary aromatic amines and aza-hydrocarbons, Tetrahedron Lett., 1966, 5517. [all data]

Szepes, Distefano, et al., 1974
Szepes, L.; Distefano, G.; Pignataro, S., Steric inhibition of resonance in acetanilides by UV photoelectron spectroscopy, Ann. Chim., 1974, 64, 159. [all data]

Kuhn, 2001
Kuhn, E.R., Selectivity vs. polarity: the fundamentals of chromatographic separation, J. Sep. Sci., 2001, 24, 6, 473-476, https://doi.org/10.1002/1615-9314(20010601)24:6<473::AID-JSSC473>3.0.CO;2-Y . [all data]

Cha and Lee, 1994
Cha, K.-W.; Lee, D.-J., Prediction of retention indices of various compounds in gas-liquid chromatography, J. Korean Chem. Soc., 1994, 38, 2, 108-120, retrieved from http://journal.kcsnet.or.kr/publi/dh/dh94n2/108.pdf. [all data]

Hedin, Thopson, et al., 1972
Hedin, P.A.; Thopson, A.C.; Gueldner, R.C.; Minyard, J.P., Volatile constituents of the boll weevil, J. Insect. Physiol., 1972, 18, 1, 79-86, https://doi.org/10.1016/0022-1910(72)90066-2 . [all data]

Still, Evans, et al., 1972
Still, R.H.; Evans, M.B.; Whitehead, A., Thermal Degradation of Polymers. V. Vacuum Pyrolysis of Poly (p-N,N-dimethylaminostyrene) . The Products Volatile at Pyrolysis Temperature, Liquid or Gaseous at Room Temperature, J. Appl. Polym. Sci., 1972, 16, 12, 3207-3221, https://doi.org/10.1002/app.1972.070161213 . [all data]

Sun and Stremple, 2003
Sun, G.; Stremple, P., Retention index characterization of flavor, fragrance, and many other compounds on DB-1 and DB-XLB, 2003, retrieved from http://www.chem.agilent.com/cag/cabu/pdf/b-0279.pdf. [all data]

Gautzsch and Zinn, 1996
Gautzsch, R.; Zinn, P., Use of incremental models to estimate the retention indexes of aromatic compounds, Chromatographia, 1996, 43, 3/4, 163-176, https://doi.org/10.1007/BF02292946 . [all data]

Rostad and Pereira, 1986
Rostad, C.E.; Pereira, W.E., Kovats and Lee retention indices determined by gas chromatography/mass spectrometry for organic compounds of environmental interest, J. Hi. Res. Chromatogr. Chromatogr. Comm., 1986, 9, 6, 328-334, https://doi.org/10.1002/jhrc.1240090603 . [all data]

Okumura, 1991
Okumura, T., retention indices of environmental chemicals on methyl silicone capillary column, Journal of Environmental Chemistry (Japan), 1991, 1, 2, 333-358, https://doi.org/10.5985/jec.1.333 . [all data]


Notes

Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, References