Benzenamine, 4-butyl-N-[(4-methoxyphenyl)methylene]-

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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: Eugene S. Domalski and Elizabeth D. Hearing

Constant pressure heat capacity of liquid

Cp,liquid (J/mol*K) Temperature (K) Reference Comment
477.298.15Shinoda and Mizuno, 1982T = 293 to 333 K. Data given graphically. Cp value is a graphical estimate.
490.300.Janik, Janik, et al., 1975T = 100 to 340 K. Cp value estimated from graphical data.
475.3298.15Shinoda, Maeda, et al., 1974T = 2 to 330 K. Nematic liquid crystal.

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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Ttriple295.3KN/AJanik, Janik, et al., 1975, 2Uncertainty assigned by TRC = 0.1 K; TRC
Ttriple294.0KN/AJanik, Janik, et al., 1975, 2Metastable crystal phase; Uncertainty assigned by TRC = 0.1 K; TRC

Enthalpy of fusion

ΔfusH (kJ/mol) Temperature (K) Reference Comment
18.033295.3Janik, Janik, et al., 1975Data also given for metastable modification 294.0 K, H = 14757 J/mol S = 50.21 J/mol*K; DH

Entropy of fusion

ΔfusS (J/mol*K) Temperature (K) Reference Comment
61.04295.3Janik, Janik, et al., 1975Data; DH

Temperature of phase transition

Ttrs (K) Initial Phase Final Phase Reference Comment
320.137liquid, Nematicliquid, isotropicShinoda and Mizuno, 1982DH

Enthalpy of phase transition

ΔHtrs (kJ/mol) Temperature (K) Initial Phase Final Phase Reference Comment
13.1486294.45crystaline, IliquidShinoda, Maeda, et al., 1974liq = Nematic liquid crystal. c,I = metastable crystal form.; DH
15.9377295.65crystaline, IIIliquidShinoda, Maeda, et al., 1974liq = Nematic liquid crystal. c,III = stable crystal form.; DH
0.2841320.14liquidliquidShinoda, Maeda, et al., 1974DH

Entropy of phase transition

ΔStrs (J/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
44.65294.45crystaline, IliquidShinoda, Maeda, et al., 1974liq; DH
53.91295.65crystaline, IIIliquidShinoda, Maeda, et al., 1974liq; DH
0.89320.14liquid, Nematicliquid, isotropicShinoda, Maeda, et al., 1974DH

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:


IR Spectrum

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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

Gas Phase Spectrum

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Additional Data

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Owner SRD/NIST
Collection (C) 2018 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin EPA-IR VAPOR PHASE LIBRARY
State gas

This IR spectrum is from the NIST/EPA Gas-Phase Infrared Database .


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 NIST Mass Spectrometry Data Center, 1994
NIST MS number 135819

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References

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

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

Shinoda and Mizuno, 1982
Shinoda, T.; Mizuno, M., On the pre-transition phenomenon of n-(p-methoxybenzylidene)-p-n-butylaniline (MBBA), Tokyo Kogyo Shikensho Hokoku, 1982, 77(4), 215-217. [all data]

Janik, Janik, et al., 1975
Janik, J.A.; Janik, J.M.; Mayer, J.; Sciesinska, E.; Sciesinski, J.; Twardowski, J.; Waluga, T.; Witko, W., Calorimetric and infrared study of the phase situation in solid MBBA [N-(p-methoxybenzylidene)-p-(n-butyl)aniline], J. Phys. (Paris) Colloq., 1975, (1), 159-165. [all data]

Shinoda, Maeda, et al., 1974
Shinoda, T.; Maeda, Y.; Enokido, H., Thermodynamic properties of N-(p-methoxybenzylidene)-p-n-butyl-aniline (MBBA) from 2K to its isotropic-liquid phase, J. Chem. Thermodynam., 1974, 6, 921-934. [all data]

Janik, Janik, et al., 1975, 2
Janik, J.A.; Janik, J.M.; Mayer, J.; Sciesinska, E.; Sciesinski, J.; Twardowski, J.; Waluga, T.; Witko, W., Calorimetric and infrared study of the phase situation in solid MBBA [N-(p-methoxybenzylidene)-p-(n-butyl)aniline], J. Phys., Colloq., 1975, 1, 159. [all data]


Notes

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