Ethanamine, N-ethyl-
- Formula: C4H11N
- Molecular weight: 73.1368
- IUPAC Standard InChIKey: HPNMFZURTQLUMO-UHFFFAOYSA-N
- CAS Registry Number: 109-89-7
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Isotopologues:
- Other names: Diethylamine; N,N-Diethylamine; (C2H5)2NH; DEA; Diaethylamin; Diethamine; Dietilamina; Dwuetyloamina; UN 1154; N-Ethylethanamine
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Phase change data
Go To: Top, References, Notes
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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 328.7 ± 0.8 | K | AVG | N/A | Average of 18 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 223.15 | K | N/A | Pohland and Mehl, 1933 | Uncertainty assigned by TRC = 2. K; TRC |
Tfus | 225.15 | K | N/A | Timmermans and Mattaar, 1921 | Uncertainty assigned by TRC = 1. K; TRC |
Tfus | 223.15 | K | N/A | Timmermans, 1921 | Uncertainty assigned by TRC = 0.5 K; TRC |
Tfus | 223.15 | K | N/A | Berthoud, 1917 | Uncertainty assigned by TRC = 3. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 498. ± 3. | K | AVG | N/A | Average of 7 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 36.99 | atm | N/A | Mandlekar, Kay, et al., 1985 | Uncertainty assigned by TRC = 0.987 atm; TRC |
Pc | 37.09 | atm | N/A | Kay and Young, 1976 | Uncertainty assigned by TRC = 0.15 atm; TRC |
Pc | 37.09 | atm | N/A | Kay and Young, 1976, 2 | Uncertainty assigned by TRC = 0.15 atm; TRC |
Pc | 36.9897 | atm | N/A | Kreglewski and Kay, 1969 | Uncertainty assigned by TRC = 0.2041 atm; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ρc | 3.32 | mol/l | N/A | Herz and Neukirch, 1923 | Uncertainty assigned by TRC = 0.03 mol/l; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 7.522 | kcal/mol | N/A | Majer and Svoboda, 1985 | |
ΔvapH° | 7.48 ± 0.02 | kcal/mol | C | Majer, Svoboda, et al., 1979 | AC |
ΔvapH° | 7.82 ± 0.05 | kcal/mol | I | Franks and Watson, 1969 | Based on data from 273. to 333. K.; AC |
ΔvapH° | 7.46 ± 0.02 | kcal/mol | C | Wadsö, Heikkilä, et al., 1969 | AC |
ΔvapH° | 7.45 ± 0.01 | kcal/mol | C | Wadso, 1969 | ALS |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
6.946 | 328.7 | N/A | Majer and Svoboda, 1985 | |
7.46 | 315. | A | Stephenson and Malanowski, 1987 | Based on data from 302. to 328. K.; AC |
7.27 | 340. | A | Stephenson and Malanowski, 1987 | Based on data from 325. to 437. K.; AC |
6.79 | 446. | A | Stephenson and Malanowski, 1987 | Based on data from 431. to 496. K.; AC |
7.22 ± 0.02 | 313. | C | Majer, Svoboda, et al., 1979 | AC |
6.96 ± 0.02 | 328. | C | Majer, Svoboda, et al., 1979 | AC |
6.69 ± 0.02 | 343. | C | Majer, Svoboda, et al., 1979 | AC |
7.60 | 307. | N/A | Kilian and Bittrich, 1965 | Based on data from 292. to 313. K. See also Boublik, Fried, et al., 1984.; AC |
7.53 | 319. | N/A | Bittrich and Kauer, 1962 | Based on data from 304. to 323. K. See also Boublik, Fried, et al., 1984.; AC |
Enthalpy of vaporization
ΔvapH =
A exp(-βTr) (1 − Tr)β
ΔvapH =
Enthalpy of vaporization (at saturation pressure)
(kcal/mol)
Tr = reduced temperature (T / Tc)
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Temperature (K) | A (kcal/mol) | β | Tc (K) | Reference | Comment |
---|---|---|---|---|---|
298. to 343. | 12.29 | 0.3266 | 496.5 | Majer and Svoboda, 1985 |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (atm)
T = temperature (K)
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Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
304.60 to 333.73 | 2.85622 | 559.071 | -132.974 | Bittrich and Kauer, 1962, 2 | Coefficents calculated by NIST from author's data. |
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.
Pohland and Mehl, 1933
Pohland, E.; Mehl, W.,
Physical Properties of Ethylamine.,
Z. Phys. Chem., Abt. A, 1933, 164, 48. [all data]
Timmermans and Mattaar, 1921
Timmermans, J.; Mattaar, J.F.,
Freezing points of orgainic substances VI. New experimental determinations.,
Bull. Soc. Chim. Belg., 1921, 30, 213. [all data]
Timmermans, 1921
Timmermans, J.,
The Freezing Points of Organic Substances IV. New Exp. Determinations,
Bull. Soc. Chim. Belg., 1921, 30, 62. [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]
Mandlekar, Kay, et al., 1985
Mandlekar, A.V.; Kay, W.B.; Smith, R.L.; Teja, A.S.,
Phase equilibria in the n-hexane + diethylamine system,
Fluid Phase Equilib., 1985, 23, 79. [all data]
Kay and Young, 1976
Kay, W.B.; Young, C.L.,
Gas-liquid critical properties. Diethylamine-methanol system,
Int. DATA Ser., Sel. Data Mixtures, Ser. A, 1976, No. 1, 74. [all data]
Kay and Young, 1976, 2
Kay, W.B.; Young, C.L.,
Gas-liquid critical properties. Diethylamine, 2-butanone (methylethyl ketone) system,
Int. DATA Ser., Sel. Data Mixtures, Ser. A, 1976, No. 1, 76. [all data]
Kreglewski and Kay, 1969
Kreglewski, A.; Kay, W.B.,
The Critical Constants of Conformal Mixtures,
J. Phys. Chem., 1969, 73, 3359. [all data]
Herz and Neukirch, 1923
Herz, W.; Neukirch, E.,
On Knowldge of the Critical State,
Z. Phys. Chem., Stoechiom. Verwandtschaftsl., 1923, 104, 433-50. [all data]
Majer and Svoboda, 1985
Majer, V.; Svoboda, V.,
Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation, Blackwell Scientific Publications, Oxford, 1985, 300. [all data]
Majer, Svoboda, et al., 1979
Majer, Vladimír; Svoboda, Václav; Koubek, Josef; Pick, Jirí,
Temperature dependence of heats of vaporization, saturated vapour pressures and cohesive energies for a group of amines,
Collect. Czech. Chem. Commun., 1979, 44, 12, 3521-3528, https://doi.org/10.1135/cccc19793521
. [all data]
Franks and Watson, 1969
Franks, F.; Watson, B.,
Calorimetric study of dilute aqueous solutions of dialkylamines: hydration of alkyl groups,
Trans. Faraday Soc., 1969, 65, 2339, https://doi.org/10.1039/tf9696502339
. [all data]
Wadsö, Heikkilä, et al., 1969
Wadsö, Ingemar; Heikkilä, Jussi; Beagley, B.; Aalto, Tarja; Werner, Per-Erik; Junggren, Ulf; Lamm, Bo; Samuelsson, Benny,
Enthalpies of Vaporization of Organic Compounds. III. Amines.,
Acta Chem. Scand., 1969, 23, 2061-2064, https://doi.org/10.3891/acta.chem.scand.23-2061
. [all data]
Wadso, 1969
Wadso, I.,
Enthalpies of vaporization of organic compounds,
Acta Chem. Scand., 1969, 23, 2061. [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]
Kilian and Bittrich, 1965
Kilian, H.; Bittrich, H.J.,
Z. Phys. Chem., 1965, 230, 383. [all data]
Boublik, Fried, et al., 1984
Boublik, T.; Fried, V.; Hala, E.,
The Vapour Pressures of Pure Substances: Selected Values of the Temperature Dependence of the Vapour Pressures of Some Pure Substances in the Normal and Low Pressure Region, 2nd ed., Elsevier, New York, 1984, 972. [all data]
Bittrich and Kauer, 1962
Bittrich, H.-J.; Kauer, E.,
Z. Phys. Chem. [Frankfurt am Main], 1962, 219, 224. [all data]
Bittrich and Kauer, 1962, 2
Bittrich, H.J.; Kauer, E.,
Zur Thermodynamik des Systems Diathylamin-Triathylamin. I. Das Flussigkeits-Dampf-Gleichgewicht,
Z. Phys. Chem. (Frankfurt/Main), 1962, 219, 224-238. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Pc Critical pressure Tboil Boiling point Tc Critical temperature Tfus Fusion (melting) point ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions ρc Critical density - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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