Ethylamine

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Gas 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: Donald R. Burgess, Jr.

Quantity Value Units Method Reference Comment
Δfgas-57.7kJ/molN/ALemoult, 1907Value computed using ΔfHliquid° value of -84.5 kj/mol from Lemoult, 1907 and ΔvapH° value of 26.8±2 kj/mol from trc clapeyron eqn.

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
Δfliquid-84.5kJ/molCcbLemoult, 1907 
Quantity Value Units Method Reference Comment
Δcliquid-1715.kJ/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, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tboil291. ± 2.KAVGN/AAverage of 17 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus191. ± 3.KAVGN/AAverage of 6 values; Individual data points
Quantity Value Units Method Reference Comment
Tc456.55KN/APohland and Mehl, 1933Uncertainty assigned by TRC = 1. K; TRC
Tc456.35KN/ABerthoud, 1917Uncertainty assigned by TRC = 1.5 K; TRC
Quantity Value Units Method Reference Comment
Pc56.2759barN/ABerthoud, 1917Uncertainty assigned by TRC = 0.4053 bar; TRC
Quantity Value Units Method Reference Comment
ρc5.408mol/lN/APohland and Mehl, 1933Uncertainty assigned by TRC = 0.22 mol/l; by extrapolation of rectilinera diamters to Tc; TRC

Enthalpy of vaporization

ΔvapH (kJ/mol) Temperature (K) Method Reference Comment
29.0282.AStephenson and Malanowski, 1987Based on data from 213. to 297. K.; AC
27.2305.AStephenson and Malanowski, 1987Based on data from 290. to 449. K.; AC
27.6306.AStephenson and Malanowski, 1987Based on data from 291. to 387. K.; AC
25.9392.AStephenson and Malanowski, 1987Based on data from 377. to 456. K.; AC
29.1281.N/ABittrich, Kauer, et al., 1962Based on data from 275. to 288. K.; AC
28.9275.N/AStull, 1947Based on data from 190. to 290. 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
190.8 to 289.84.455861121.445-37.854Stull, 1947Coefficents calculated by NIST from author's data.
289.8 to 449.4.530131203.822-23.716Stull, 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:


Reaction 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 as indicated in comments:
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
B - John E. Bartmess
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

C3H9Si+ + Ethylamine = (C3H9Si+ • Ethylamine)

By formula: C3H9Si+ + C2H7N = (C3H9Si+ • C2H7N)

Quantity Value Units Method Reference Comment
Δr240.kJ/molPHPMSLi and Stone, 1990gas phase; switching reaction,Thermochemical ladder((CH3)3Si+)C6H5COOC2H5; Wojtyniak and Stone, 1986; M
Quantity Value Units Method Reference Comment
Δr164.J/mol*KPHPMSLi and Stone, 1990gas phase; switching reaction,Thermochemical ladder((CH3)3Si+)C6H5COOC2H5; Wojtyniak and Stone, 1986; M

(C2H8N+ • 2Ethylamine) + Ethylamine = (C2H8N+ • 3Ethylamine)

By formula: (C2H8N+ • 2C2H7N) + C2H7N = (C2H8N+ • 3C2H7N)

Quantity Value Units Method Reference Comment
Δr72.4kJ/molHPMSZielinska and Wincel, 1974gas phase; Entropy change is questionable; M
Quantity Value Units Method Reference Comment
Δr178.J/mol*KHPMSZielinska and Wincel, 1974gas phase; Entropy change is questionable; M

(C2H8N+ • Ethylamine) + Ethylamine = (C2H8N+ • 2Ethylamine)

By formula: (C2H8N+ • C2H7N) + C2H7N = (C2H8N+ • 2C2H7N)

Quantity Value Units Method Reference Comment
Δr81.6kJ/molHPMSZielinska and Wincel, 1974gas phase; Entropy change is questionable; M
Quantity Value Units Method Reference Comment
Δr174.J/mol*KHPMSZielinska and Wincel, 1974gas phase; Entropy change is questionable; M

C2H6N- + Hydrogen cation = Ethylamine

By formula: C2H6N- + H+ = C2H7N

Quantity Value Units Method Reference Comment
Δr1671. ± 4.6kJ/molG+TSMacKay, Hemsworth, et al., 1976gas phase; B
Quantity Value Units Method Reference Comment
Δr1638.9 ± 2.9kJ/molIMREMacKay, Hemsworth, et al., 1976gas phase; B

2Ethylamine = Methylamine + Methylamine, N,N-dimethyl-

By formula: 2C2H7N = CH5N + C3H9N

Quantity Value Units Method Reference Comment
Δr-13.2kJ/molEqkIssoire and Long, 1960gas phase; ALS

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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias

Data compiled as indicated in comments:
B - John E. Bartmess
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

View reactions leading to C2H7N+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
Proton affinity (review)912.0kJ/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity878.kJ/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
8.9PEOhno, Imai, et al., 1985LBLHLM
8.7PEOhno, Imai, et al., 1983LBLHLM
8.8 ± 0.1PEAue, Webb, et al., 1976LLK
8.74CTSSlifkin and Allison, 1967RDSH
9.19PEAl-Joboury and Turner, 1964RDSH
8.86 ± 0.02PIWatanabe and Mottl, 1957RDSH
9.50PEOhno, Imai, et al., 1985Vertical value; LBLHLM
9.50PEUtsunomiya, Kobayashi, et al., 1980Vertical value; LLK
9.471PEAue, Webb, et al., 1975Vertical value; LLK
9.50PEOgata, Onizuka, et al., 1973Vertical value; LLK
9.44 ± 0.18PELeavell, Steichen, et al., 1973Vertical value; LLK
9.50PEKatsumata, Iwai, et al., 1973Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
CH2N+15.45?EICollin, Franskin, et al., 1967RDSH
CH3+15.6CH2NH2EISenSharma and Franklin, 1973LLK
CH3N+13.5 ± 0.2CH4EICollin, Franskin, et al., 1967RDSH
CH4N+9.69CH3EILossing, Lam, et al., 1981LLK
CH4N+10.2 ± 0.1CH3EICollin, Franskin, et al., 1967RDSH
CH4N+9.71CH3PIChupka, 1959RDSH
C2H3+16.14?EICollin, Franskin, et al., 1967RDSH
C2H5+13.5 ± 0.2?EICollin, Franskin, et al., 1967RDSH
C2H6N+9.55HEILossing, Lam, et al., 1981LLK
C2H6N+9.61 ± 0.09HEISolka and Russell, 1974LLK
C2H6N+12.0 ± 0.1HEICollin, Franskin, et al., 1967RDSH
NH3+12.99?EICollin, Franskin, et al., 1967RDSH
H4N+12.72 ± 0.02C2H2+HEIHaney and Franklin, 1969RDSH

De-protonation reactions

C2H6N- + Hydrogen cation = Ethylamine

By formula: C2H6N- + H+ = C2H7N

Quantity Value Units Method Reference Comment
Δr1671. ± 4.6kJ/molG+TSMacKay, Hemsworth, et al., 1976gas phase; B
Quantity Value Units Method Reference Comment
Δr1638.9 ± 2.9kJ/molIMREMacKay, Hemsworth, et al., 1976gas phase; B

Ion clustering data

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

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

Data compiled by: Michael M. Meot-Ner (Mautner) and Sharon G. Lias

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

(C2H8N+ • Ethylamine) + Ethylamine = (C2H8N+ • 2Ethylamine)

By formula: (C2H8N+ • C2H7N) + C2H7N = (C2H8N+ • 2C2H7N)

Quantity Value Units Method Reference Comment
Δr81.6kJ/molHPMSZielinska and Wincel, 1974gas phase; Entropy change is questionable
Quantity Value Units Method Reference Comment
Δr174.J/mol*KHPMSZielinska and Wincel, 1974gas phase; Entropy change is questionable

(C2H8N+ • 2Ethylamine) + Ethylamine = (C2H8N+ • 3Ethylamine)

By formula: (C2H8N+ • 2C2H7N) + C2H7N = (C2H8N+ • 3C2H7N)

Quantity Value Units Method Reference Comment
Δr72.4kJ/molHPMSZielinska and Wincel, 1974gas phase; Entropy change is questionable
Quantity Value Units Method Reference Comment
Δr178.J/mol*KHPMSZielinska and Wincel, 1974gas phase; Entropy change is questionable

C3H9Si+ + Ethylamine = (C3H9Si+ • Ethylamine)

By formula: C3H9Si+ + C2H7N = (C3H9Si+ • C2H7N)

Quantity Value Units Method Reference Comment
Δr240.kJ/molPHPMSLi and Stone, 1990gas phase; switching reaction,Thermochemical ladder((CH3)3Si+)C6H5COOC2H5; Wojtyniak and Stone, 1986
Quantity Value Units Method Reference Comment
Δr164.J/mol*KPHPMSLi and Stone, 1990gas phase; switching reaction,Thermochemical ladder((CH3)3Si+)C6H5COOC2H5; Wojtyniak and Stone, 1986

IR Spectrum

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, Mass spectrum (electron ionization), References, Notes

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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IR spectrum
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Additional Data

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Owner NIST Standard Reference Data Program
Collection (C) 2018 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin Sadtler Research Labs Under US-EPA Contract
State gas

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


Mass spectrum (electron ionization)

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, References, Notes

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.
NIST MS number 71

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References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering 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.

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]

Pohland and Mehl, 1933
Pohland, E.; Mehl, W., Physical Properties of Ethylamine., Z. Phys. Chem., Abt. A, 1933, 164, 48. [all data]

Berthoud, 1917
Berthoud, A., Determination of Critical Temperatures and Pressures of Amines and Alkyl Chlorides, J. Chim. Phys. Phys.-Chim. Biol., 1917, 15, 3. [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]

Bittrich, Kauer, et al., 1962
Bittrich, H.J.; Kauer, E.; Kraft, M.; Sch«65533»ppe, G.; S«65533»ll, W.; Ullrich, A., Die Dampfdr«65533»cke der «65533»thylamine, J. Prakt. Chem., 1962, 17, 5-6, 250-262, https://doi.org/10.1002/prac.19620170502 . [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]

Li and Stone, 1990
Li, X.; Stone, A.J., Gas-Phase (CH3)3Si+ Affinities of Alkylamines and Proton Affinities of Trimethylsilyl Alkylamines, Int. J. Mass Spectrom. Ion Proc., 1990, 101, 2-3, 149, https://doi.org/10.1016/0168-1176(90)87008-5 . [all data]

Wojtyniak and Stone, 1986
Wojtyniak, A.C.M.; Stone, A.J., A High-Pressure Mass Spectrometric Study of the Bonding of Trimethylsilylium to Oxygen and Aromatic Bases, Can. J. Chem., 1986, 74, 59. [all data]

Zielinska and Wincel, 1974
Zielinska, T.J.; Wincel, H., Gas - Phase Solvation of Protonated Aliphatic Amines: Methyl, Ethyl, n - Propyl, and Iso - Propylamine, Chem. Phys. Lett., 1974, 25, 354. [all data]

MacKay, Hemsworth, et al., 1976
MacKay, G.J.; Hemsworth, R.S.; Bohme, D.K., Absolute gas-phase acidities of CH3NH2, C2H5NH2, (CH3)2NH, and (CH3)3N, Can. J. Chem., 1976, 54, 1624. [all data]

Issoire and Long, 1960
Issoire, J.; Long, C., Etude de la thermodynamique chimique de la reaction de formation des methylamines, Bull. Soc. Chim. France, 1960, 2004-2012. [all data]

Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018 . [all data]

Ohno, Imai, et al., 1985
Ohno, K.; Imai, K.; Harada, Y., Variations in reactivity of lone-pair electrons due to intramolecular hydrogen bonding as observed by penning ionization electron spectroscopy, J. Am. Chem. Soc., 1985, 107, 8078. [all data]

Ohno, Imai, et al., 1983
Ohno, K.; Imai, K.; Matsumoto, S.; Harada, Y., Penning ionization electron spectroscopy of C2H5X (X = NH2, OH, H, Cl, I) relative reactivity of orbital localizing on functional groups upon electrophilic attack by metastable helium atoms, J. Phys. Chem., 1983, 87, 4346. [all data]

Aue, Webb, et al., 1976
Aue, D.H.; Webb, H.M.; Bowers, M.T., Quantitative proton affinities, ionization potentials, and hydrogen affinities of alkylamines, J. Am. Chem. Soc., 1976, 98, 311. [all data]

Slifkin and Allison, 1967
Slifkin, M.A.; Allison, A.C., Measurement of ionization potentials from contact charge transfer spectra, Nature, 1967, 215, 949. [all data]

Al-Joboury and Turner, 1964
Al-Joboury, M.I.; Turner, D.W., Molecular photoelectron spectroscopy. Part II. A summary of ionization potentials, J. Chem. Soc., 1964, 4434. [all data]

Watanabe and Mottl, 1957
Watanabe, K.; Mottl, J.R., Ionization potentials of ammonia and some amines, J. Chem. Phys., 1957, 26, 1773. [all data]

Utsunomiya, Kobayashi, et al., 1980
Utsunomiya, C.; Kobayashi, T.; Nagakura, S., Photoelectron angular distribution measurements for some aliphatic alcohols, amines, halides, Bull. Chem. Soc. Jpn., 1980, 53, 1216. [all data]

Aue, Webb, et al., 1975
Aue, D.H.; Webb, H.M.; Bowers, M.T., Proton affinities, ionization potentials, and hydrogen affinities of nitrogen and oxygen bases. Hybridization effects, J. Am. Chem. Soc., 1975, 97, 4137. [all data]

Ogata, Onizuka, et al., 1973
Ogata, H.; Onizuka, H.; Nihei, Y.; Kamada, H., The photoelectron spectra of alcohols, mercaptans and amines, Bull. Chem. Soc. Jpn., 1973, 46, 3036. [all data]

Leavell, Steichen, et al., 1973
Leavell, S.; Steichen, J.; Franklin, J.L., Photoelectron spectra of intramolecularly hydrogen bonded compounds, J. Chem. Phys., 1973, 59, 4343. [all data]

Katsumata, Iwai, et al., 1973
Katsumata, S.; Iwai, T.; Kimura, K., Photoelectron spectra and sum rule consideration. Higher alkyl amines and alcohols, Bull. Chem. Soc. Jpn., 1973, 46, 3391. [all data]

Collin, Franskin, et al., 1967
Collin, J.E.; Franskin, M.J.; Hyatt, D., Etude par spectrometrie de masse des mechanismes de dissociation dans l'ethylamine et ses homologues deuteres, Bull. Soc. Roy. Sci. Liege, 1967, 36, 318. [all data]

SenSharma and Franklin, 1973
SenSharma, D.K.; Franklin, J.L., Heat of formation of free radicals by mass spectrometry, J. Am. Chem. Soc., 1973, 95, 6562. [all data]

Lossing, Lam, et al., 1981
Lossing, F.P.; Lam, Y.-T.; Maccoll, A., Gas phase heats of formation of alkyl immonium ions, Can. J. Chem., 1981, 59, 2228. [all data]

Chupka, 1959
Chupka, W.A., Effect of unimolecular decay kinetics on the interpretation of appearance potentials, J. Chem. Phys., 1959, 30, 191. [all data]

Solka and Russell, 1974
Solka, B.H.; Russell, M.E., Energetics of formation of some structural isomers of gaseous C2H5O+ C2H6N+ ions, J. Phys. Chem., 1974, 78, 1268. [all data]

Haney and Franklin, 1969
Haney, M.A.; Franklin, J.L., Heats of formation of H3O+, H3S+, and NH4+ by electron impact, J. Chem. Phys., 1969, 50, 2028. [all data]


Notes

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