4-Butyl-N-(4-ethoxybenzylidene)aniline
- Formula: C19H23NO
- Molecular weight: 281.3920
- IUPAC Standard InChIKey: DBOAVDSSZWDGTH-UHFFFAOYSA-N
- CAS Registry Number: 29743-08-6
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: p-Ethoxybenzylidene p-butylaniline; Benzenamine, 4-butyl-N-[(4-ethoxyphenyl)methylene]-; 4-Butyl-N-[(4-ethoxyphenyl)methylidene]aniline; N-p-Ethoxybenzylidene-p-butylaniline; N-(4'-Ethoxybenzylidene)-4-n-butylaniline; N-(4-Ethoxybenzylidene)-4-butylaniline; p-[(p-Ethoxybenzylidene)amino]butylbenzene; N-p-Ethoxybenzylidene-p'-butylaniline
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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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Ttriple | 305.62 | K | N/A | Sorai, Nakamura, et al., 1974 | Nemactic liquid crystal phase; Uncertainty assigned by TRC = 0.02 K; TRC |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
27.090 | 305.62 | Sorai, Nakamura, et al., 1974, 2 | Crystal-nematic.; DH |
27.090 | 305.62 | Sorai, Nakamura, et al., 1973 | Solid - nematic.; DH |
Entropy of fusion
ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
88.71 | 305.62 | Sorai, Nakamura, et al., 1974, 2 | Crystal-nematic.; DH |
88.71 | 305.62 | Sorai, Nakamura, et al., 1973 | Solid; DH |
Enthalpy of phase transition
ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
1.553 | 349.08 | liquid | liquid | Sorai, Nakamura, et al., 1974, 2 | DH |
1.553 | 349.08 | liquid | liquid | Sorai, Nakamura, et al., 1973 | DH |
Entropy of phase transition
ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
4.524 | 349.08 | liquid, Nematic | liquid, isotropic | Sorai, Nakamura, et al., 1974, 2 | DH |
4.524 | 349.08 | liquid, Nematic | liquid, isotropic | Sorai, Nakamura, et al., 1973 | DH |
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.
Sorai, Nakamura, et al., 1974
Sorai, M.; Nakamura, T.; Seki, S.,
Heat capacity of nematogenic N-p-ethoxybenzylidene-p'-butylaniline between 14 and 375 K,
Bull. Chem. Soc. Jpn., 1974, 47, 2192-6. [all data]
Sorai, Nakamura, et al., 1974, 2
Sorai, M.; Nakamura, T.; Seki, S.,
Heat capacity of nematogenic N-p-ethoxybenzylidene-p'-butylaniline between 14 and 375 K,
Bull. Chem. Soc. Japan, 1974, 47, 2192-2196. [all data]
Sorai, Nakamura, et al., 1973
Sorai, M.; Nakamura, T.; Seki, S.,
Thermal studies of benzylideneaniline liquid crystals,
Liq. Cryst., 1973, Proc. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Ttriple Triple point temperature ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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