Ethyl ether
- Formula: C4H10O
- Molecular weight: 74.1216
- IUPAC Standard InChIKey: RTZKZFJDLAIYFH-UHFFFAOYSA-N
- CAS Registry Number: 60-29-7
- 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. - Other names: Ethane, 1,1'-oxybis-; Anaesthetic ether; Anesthesia ether; Anesthetic ether; Diethyl ether; Diethyl oxide; Ethoxyethane; Pronarcol; Solvent ether; 1,1'-Oxybisethane; (C2H5)2O; Aether; Diaethylaether; Dwuetylowy eter; Etere etilico; Ether ethylique; Ether, ethyl; Ethyl ether, tech.; Ethyl oxide; Oxyde d'ethyle; Rcra waste number U117; UN 1155; 3-Oxapentane; Ether; Ethyl ether anhydrous A.C.S.; Sulfuric ether; NSC 100036
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Gas phase thermochemistry data
Go To: Top, Phase change 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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -60.40 ± 0.47 | kcal/mol | Ccb | Pihlaja and Heikkil, 1968 | Reanalyzed by Pedley, Naylor, et al., 1986, Original value = -59.82 ± 0.44 kcal/mol; ALS |
ΔfH°gas | -60.28 ± 0.19 | kcal/mol | Cm | Pilcher, Skinner, et al., 1963 | ALS |
ΔfH°gas | -58.4 | kcal/mol | Ccb | Murrin and Goldhagen, 1957 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°gas | -651.60 ± 0.43 | kcal/mol | Ccb | Pihlaja and Heikkil, 1968 | Corresponding ΔfHºgas = -66.18 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
ΔcH°gas | -657.52 ± 0.18 | kcal/mol | Cm | Pilcher, Skinner, et al., 1963 | Corresponding ΔfHºgas = -60.26 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
Quantity | Value | Units | Method | Reference | Comment |
S°gas | 81.79 | cal/mol*K | N/A | Counsell J.F., 1971 | Other third-law entropy values at 298.15 K are 342.46 [ Cope C.S., 1959], 342.33 [ Stull D.R., 1969], and 342.60 J/mol*K [ Chao J., 1986].; GT |
Constant pressure heat capacity of gas
Cp,gas (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
14.94 | 100. | Chao J., 1986 | p=1 bar.; GT |
20.27 | 150. | ||
23.83 | 200. | ||
27.318 | 273.15 | ||
28.552 ± 0.036 | 298.15 | ||
28.647 | 300. | ||
34.132 | 400. | ||
39.620 | 500. | ||
44.539 | 600. | ||
48.841 | 700. | ||
52.591 | 800. | ||
55.865 | 900. | ||
58.719 | 1000. | ||
61.205 | 1100. | ||
63.365 | 1200. | ||
65.241 | 1300. | ||
66.876 | 1400. | ||
68.298 | 1500. |
Constant pressure heat capacity of gas
Cp,gas (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
29.144 | 309.98 | Counsell J.F., 1971 | Other experimental values of heat capacity [ Jennings W.H., 1934, Jatkar S.K.K., 1939, Valentin F.H.H., 1950] are believed to be less reliable (see [ Chao J., 1986]).; GT |
30.251 | 329.99 | ||
31.386 | 350.00 | ||
32.794 | 375.00 | ||
34.242 | 400.01 | ||
35.636 | 424.99 | ||
37.072 | 450.04 |
Phase change data
Go To: Top, Gas phase thermochemistry 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 as indicated in comments:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 307.7 ± 0.4 | K | AVG | N/A | Average of 20 out of 21 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 154. ± 7. | K | AVG | N/A | Average of 13 out of 14 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 156.92 | K | N/A | Wilhoit, Chao, et al., 1985 | Uncertainty assigned by TRC = 0.05 K; TRC |
Ttriple | 149.86 | K | N/A | Counsell, Lee, et al., 1971 | Crystal phase 2 phase; Uncertainty assigned by TRC = 0.02 K; TRC |
Ttriple | 156.92 | K | N/A | Counsell, Lee, et al., 1971 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.02 K; TRC |
Ttriple | 156.8 | K | N/A | Parks and Huffman, 1926 | Uncertainty assigned by TRC = 0.2 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 467. ± 2. | K | AVG | N/A | Average of 29 out of 30 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 36.0 ± 0.9 | atm | AVG | N/A | Average of 16 out of 17 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Vc | 0.274 | l/mol | N/A | Kobe, Ravicz, et al., 1956 | Uncertainty assigned by TRC = 0.005 l/mol; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ρc | 3.5 ± 0.4 | mol/l | AVG | N/A | Average of 10 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 6.5 ± 0.1 | kcal/mol | AVG | N/A | Average of 6 values; Individual data points |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
6.338 | 307.6 | N/A | Majer and Svoboda, 1985 | |
6.5798 | 285.0 | N/A | Keyes and Beattie, 1924 | P = 101.325 kPa; DH |
6.72 | 301. | A | Stephenson and Malanowski, 1987 | Based on data from 286. to 329. K.; AC |
6.43 | 322. | A | Stephenson and Malanowski, 1987 | Based on data from 307. to 457. K.; AC |
6.57 | 320. | A | Stephenson and Malanowski, 1987 | Based on data from 305. to 360. K.; AC |
6.38 | 432. | A | Stephenson and Malanowski, 1987 | Based on data from 417. to 467. K.; AC |
7.05 | 265. | A | Stephenson and Malanowski, 1987 | Based on data from 250. to 329. K. See also Ambrose, Sprake, et al., 1972 and Ambrose, Ellender, et al., 1976.; AC |
6.512 ± 0.001 | 295.63 | V | Counsell, Lee, et al., 1971, 2 | ALS |
6.79 | 278. | N/A | Taylor and Smith, 1922 | Based on data from 213. to 293. K.; 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 |
---|---|---|---|---|---|
281. to 313. | 10.28 | 0.2786 | 466.7 | Majer and Svoboda, 1985 |
Entropy of vaporization
ΔvapS (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
23.09 | 285.0 | Keyes and Beattie, 1924 | P; DH |
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 |
---|---|---|---|---|---|
250.04 to 328.57 | 4.0163 | 1062.64 | -44.93 | Ambrose, Sprake, et al., 1972 | Coefficents calculated by NIST from author's data. |
350.14 to 466.73 | 4.46417 | 1354.913 | -5.537 | Ambrose, Sprake, et al., 1972 | Coefficents calculated by NIST from author's data. |
212.4 to 293.02 | 4.12806 | 1102.878 | -40.46 | Taylor and Smith, 1922 | Coefficents calculated by NIST from author's data. |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
1.72 | 156.9 | Counsell, Lee, et al., 1971, 2 | AC |
1.745 | 156.8 | Parks and Huffman, 1926, 2 | DH |
Entropy of fusion
ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
11.1 | 156.8 | Parks and Huffman, 1926, 2 | DH |
Enthalpy of phase transition
ΔHtrs (kcal/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
1.630 | 149.86 | crystaline, II | liquid | Counsell, Lee, et al., 1971, 3 | DH |
1.718 | 156.92 | crystaline, I | liquid | Counsell, Lee, et al., 1971, 3 | Metastable crystal.; DH |
Entropy of phase transition
ΔStrs (cal/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
10.9 | 149.86 | crystaline, II | liquid | Counsell, Lee, et al., 1971, 3 | DH |
10.95 | 156.92 | crystaline, I | liquid | Counsell, Lee, et al., 1971, 3 | Metastable; DH |
Mass spectrum (electron ionization)
Go To: Top, Gas phase thermochemistry data, Phase change data, 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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Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
Due to licensing restrictions, this spectrum cannot be downloaded.
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- 71 |
NIST MS number | 229016 |
References
Go To: Top, Gas phase thermochemistry data, Phase change data, 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.
Pihlaja and Heikkil, 1968
Pihlaja, K.; Heikkil, J.,
Heats of combustion. Diethyl ether and 1,1-diethoxyethane,
Acta Chem. Scand., 1968, 22, 2731-2732. [all data]
Pedley, Naylor, et al., 1986
Pedley, J.B.; Naylor, R.D.; Kirby, S.P.,
Thermochemical Data of Organic Compounds, Chapman and Hall, New York, 1986, 1-792. [all data]
Pilcher, Skinner, et al., 1963
Pilcher, G.; Skinner, H.A.; Pell, A.S.; Pope, A.E.,
Measurements of heats of combustion by flame calorimetry. Part 1.-Diethyl ether, ethyl vinyl ether and divinyl ether,
Trans. Faraday Soc., 1963, 59, 316-330. [all data]
Murrin and Goldhagen, 1957
Murrin, J.W.; Goldhagen, S.,
Determination of the C-O bond energy from the heats of combustion of four aliphatic ethers,
NAVORD Report No. 5491, U.S. Naval Powder Factory Res. & Dev. Dept., 1957, 1-14. [all data]
Counsell J.F., 1971
Counsell J.F.,
Thermodynamic properties of organic oxygen compounds. Part XXVI. Diethyl ether,
J. Chem. Soc. A, 1971, 313-316. [all data]
Cope C.S., 1959
Cope C.S.,
Equilibria in the hydration of ethylene at elevated pressures and temperatures,
A. I. Ch. E. Journal, 1959, 5, 10-16. [all data]
Stull D.R., 1969
Stull D.R., Jr.,
The Chemical Thermodynamics of Organic Compounds. Wiley, New York, 1969. [all data]
Chao J., 1986
Chao J.,
Thermodynamic properties of key organic oxygen compounds in the carbon range C1 to C4. Part 2. Ideal gas properties,
J. Phys. Chem. Ref. Data, 1986, 15, 1369-1436. [all data]
Jennings W.H., 1934
Jennings W.H.,
Specific heat of furan and ethyl ether vapors,
J. Phys. Chem., 1934, 38, 747-751. [all data]
Jatkar S.K.K., 1939
Jatkar S.K.K.,
Supersonic velocity in gases and vapors. V. Heat capacity of vapors of acetone, benzene, cyclohexane, hexane and methyl, ethyl and propyl ethers,
J. Indian Inst. Sci., 1939, A22, 19-37. [all data]
Valentin F.H.H., 1950
Valentin F.H.H.,
Equilibrium and thermodynamic relation in the vapor-phase catalytic dehydration of ethyl alcohol to ethyl ether,
J. Chem. Soc., 1950, 498-500. [all data]
Wilhoit, Chao, et al., 1985
Wilhoit, R.C.; Chao, J.; Hall, K.R.,
Thermodynamic Properties of Key Organic Compounds in the Carbon Range C1 to C4. Part 1. Properties of Condensed Phases,
J. Phys. Chem. Ref. Data, 1985, 14, 1. [all data]
Counsell, Lee, et al., 1971
Counsell, J.F.; Lee, D.A.; Martin, J.F.,
Thermodynamic properties of organic oxygen compounds: xxvi diethyl ether,
J. Chem. Soc. A, 1971, 1971, 313-6. [all data]
Parks and Huffman, 1926
Parks, G.S.; Huffman, H.M.,
Thermal data on organic compounds: IV the heat capacites, entropies, and free energies of normal propyl alcohol, ethyl ether, and dulcitol,
J. Am. Chem. Soc., 1926, 48, 2788-93. [all data]
Kobe, Ravicz, et al., 1956
Kobe, K.A.; Ravicz, A.E.; Vohra, S.P.,
Critical Properties and Vapor Pressures of Some Ethers and Heterocyclic Compounds,
J. Chem. Eng. Data, 1956, 1, 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]
Keyes and Beattie, 1924
Keyes, F.G.; Beattie, J.A.,
A calorimeter for measuring specific heats and heats of vaporization of liquids. The specific heat and heat of vaporization of liquid ethyl ether at 0° and 12°,
J. Am. Chem. Soc., 1924, 46, 1753-1760. [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]
Ambrose, Sprake, et al., 1972
Ambrose, D.; Sprake, C.H.S.; Townsend, R.,
Thermodynamic properties of organic oxygen compounds XXIX. The vapour pressure of diethyl ether,
The Journal of Chemical Thermodynamics, 1972, 4, 2, 247-254, https://doi.org/10.1016/0021-9614(72)90063-8
. [all data]
Ambrose, Ellender, et al., 1976
Ambrose, D.; Ellender, J.H.; Sprake, C.H.S.; Townsend, R.,
Thermodynamic properties of organic oxygen compounds XLIII. Vapour pressures of some ethers,
The Journal of Chemical Thermodynamics, 1976, 8, 2, 165-178, https://doi.org/10.1016/0021-9614(76)90090-2
. [all data]
Counsell, Lee, et al., 1971, 2
Counsell, J.F.; Lee, D.A.; Martin, J.F.,
Thermodynamic properties of organic oxygen compounds. Part XXVI. Diethyl ether,
J. Chem. Soc. A, 1971, 313. [all data]
Taylor and Smith, 1922
Taylor, Robert S.; Smith, Leighton B.,
THE VAPOR PRESSURES, DENSITIES AND SOME DERIVED QUANTITIES FOR ETHER AT LOW TEMPERATURES,
J. Am. Chem. Soc., 1922, 44, 11, 2450-2463, https://doi.org/10.1021/ja01432a012
. [all data]
Parks and Huffman, 1926, 2
Parks, G.S.; Huffman, H.M.,
Thermal data on organic compounds. IV. The heat capacities, entropies and free energies of normal propyl alcohol, ethyl ether and dulcitol,
J. Am. Chem. Soc., 1926, 48, 2788-2793. [all data]
Counsell, Lee, et al., 1971, 3
Counsell, J.F.; Lee, D.A.; Martin, J.F.,
Thermodynamic properties of organic oxygen compounds. Part XXVI. Diethyl ether, 1971, J. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Phase change data, Mass spectrum (electron ionization), References
- Symbols used in this document:
Cp,gas Constant pressure heat capacity of gas Pc Critical pressure S°gas Entropy of gas at standard conditions Tboil Boiling point Tc Critical temperature Tfus Fusion (melting) point Ttriple Triple point temperature Vc Critical volume ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition ΔcH°gas Enthalpy of combustion of gas at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions ΔvapS Entropy of vaporization ρc Critical density - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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