Ethanol
- Formula: C2H6O
- Molecular weight: 46.0684
- IUPAC Standard InChIKey: LFQSCWFLJHTTHZ-UHFFFAOYSA-N
- CAS Registry Number: 64-17-5
- 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: Ethyl alcohol; Alcohol; Alcohol anhydrous; Algrain; Anhydrol; Denatured ethanol; Ethyl hydrate; Ethyl hydroxide; Jaysol; Jaysol S; Methylcarbinol; SD Alchol 23-hydrogen; Tecsol; C2H5OH; Absolute ethanol; Cologne spirit; Fermentation alcohol; Grain alcohol; Molasses alcohol; Potato alcohol; Aethanol; Aethylalkohol; Alcohol, dehydrated; Alcool ethylique; Alcool etilico; Alkohol; Cologne spirits; Denatured alcohol CD-10; Denatured alcohol CD-5; Denatured alcohol CD-5a; Denatured alcohol SD-1; Denatured alcohol SD-13a; Denatured alcohol SD-17; Denatured alcohol SD-23a; Denatured alcohol SD-28; Denatured alcohol SD-3a; Denatured alcohol SD-30; Denatured alcohol SD-39b; Denatured alcohol SD-39c; Denatured alcohol SD-40m; Etanolo; Ethanol 200 proof; Ethyl alc; Etylowy alkohol; EtOH; NCI-C03134; Spirits of wine; Spirt; Alkoholu etylowego; Ethyl alcohol anhydrous; SD alcohol 23-hydrogen; UN 1170; Tecsol C; Alcare Hand Degermer; Absolute alcohol; Denatured alcohol; Ethanol, silent spirit; Ethylol; Punctilious ethyl alcohol; SD 3A
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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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
BS - Robert L. Brown and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
CAL - James S. Chickos, William E. Acree, Jr., Joel F. Liebman, Students of Chem 202 (Introduction to the Literature of Chemistry), University of Missouri -- St. Louis
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 351.5 ± 0.2 | K | AVG | N/A | Average of 138 out of 148 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 159. ± 2. | K | AVG | N/A | Average of 11 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 150. ± 20. | K | AVG | N/A | Average of 8 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 514. ± 7. | K | AVG | N/A | Average of 37 out of 38 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 63. ± 4. | bar | AVG | N/A | Average of 18 out of 19 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Vc | 0.168 | l/mol | N/A | Gude and Teja, 1995 | |
Quantity | Value | Units | Method | Reference | Comment |
ρc | 6.0 ± 0.2 | mol/l | AVG | N/A | Average of 7 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 42.3 ± 0.4 | kJ/mol | AVG | N/A | Average of 12 out of 13 values; Individual data points |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
38.56 | 351.5 | N/A | Majer and Svoboda, 1985 | |
41.7 | 326. | N/A | Mejia, Segura, et al., 2010 | Based on data from 311. to 351. K.; AC |
39.3 | 338. | N/A | Aucejo, Loras, et al., 1999 | Based on data from 323. to 357. K.; AC |
40.7 | 321. | EB | Diogo, Santos, et al., 1995 | Based on data from 309. to 343. K.; AC |
40.5 | 357. | N/A | Ortega, Susial, et al., 1990 | Based on data from 342. to 357. K.; AC |
35.2 | 393. | C | Vine and Wormald, 1989 | AC |
30.6 | 423. | C | Vine and Wormald, 1989 | AC |
25.7 | 453. | C | Vine and Wormald, 1989 | AC |
21.8 | 473. | C | Vine and Wormald, 1989 | AC |
17.3 | 493. | C | Vine and Wormald, 1989 | AC |
14.2 | 503. | C | Vine and Wormald, 1989 | AC |
40.9 | 320. | C | Dong, Lin, et al., 1988 | AC |
40.4 | 328. | C | Dong, Lin, et al., 1988 | AC |
40.2 | 335. | C | Dong, Lin, et al., 1988 | AC |
39.4 | 344. | C | Dong, Lin, et al., 1988 | AC |
38.8 | 351. | C | Dong, Lin, et al., 1988 | AC |
41.3 | 335. | A | Stephenson and Malanowski, 1987 | Based on data from 320. to 359. K.; AC |
45.6 | 256. | A | Stephenson and Malanowski, 1987 | Based on data from 210. to 271. K.; AC |
44. | 208. | A | Stephenson and Malanowski, 1987 | Based on data from 193. to 223. K.; AC |
41.3 | 335. | A | Stephenson and Malanowski, 1987 | Based on data from 320. to 359. K.; AC |
40.1 | 361. | A | Stephenson and Malanowski, 1987 | Based on data from 349. to 374. K.; AC |
39.1 | 385. | A | Stephenson and Malanowski, 1987 | Based on data from 370. to 464. K.; AC |
36.1 | 474. | A | Stephenson and Malanowski, 1987 | Based on data from 459. to 514. K.; AC |
42.5 | 307. | A | Stephenson and Malanowski, 1987 | Based on data from 292. to 353. K.; AC |
42.5 | 308. | A,EB | Stephenson and Malanowski, 1987 | Based on data from 293. to 366. K. See also Ambrose, Counsell, et al., 1970.; AC |
42.9 | 286. | N/A | Wilhoit and Zwolinski, 1973 | Based on data from 271. to 373. K.; AC |
41.0 ± 0.1 | 320. | C | Counsell, Fenwick, et al., 1970 | AC |
40.0 ± 0.1 | 335. | C | Counsell, Fenwick, et al., 1970 | AC |
38.7 ± 0.1 | 351. | C | Counsell, Fenwick, et al., 1970 | AC |
42.4 | 303. | N/A | Van Ness, Soczek, et al., 1967 | Based on data from 288. to 348. K.; AC |
42.2 | 313. | N/A | Kretschmer and Wiebe, 1949 | Based on data from 298. to 351. K.; AC |
40.0 | 351. | N/A | Oguri, Anjo, et al., 1934 | AC |
54.1 | 301. | N/A | Kahlbaum, 1883 | Based on data from 286. to 351. K.; AC |
Enthalpy of vaporization
ΔvapH = A exp(-αTr)
(1 − Tr)β
ΔvapH =
Enthalpy of vaporization (at saturation pressure)
(kJ/mol)
Tr = reduced temperature (T / Tc)
View plot Requires a JavaScript / HTML 5 canvas capable browser.
Temperature (K) | 298. to 469. |
---|---|
A (kJ/mol) | 50.43 |
α | -0.4475 |
β | 0.4989 |
Tc (K) | 513.9 |
Reference | Majer and Svoboda, 1985 |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)
View plot Requires a JavaScript / HTML 5 canvas capable browser.
Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
364.8 to 513.91 | 4.92531 | 1432.526 | -61.819 | Ambrose, Sprake, et al., 1975 | Coefficents calculated by NIST from author's data. |
292.77 to 366.63 | 5.24677 | 1598.673 | -46.424 | Ambrose and Sprake, 1970 | Coefficents calculated by NIST from author's data. |
273. to 351.70 | 5.37229 | 1670.409 | -40.191 | Kretschmer and Wiebe, 1949 | Coefficents calculated by NIST from author's data. |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
4.973 | 159. | Yoshida, 1944 | DH |
5.021 | 158.5 | Kelley, 1929 | DH |
4.626 | 156.2 | Gibson, Parks, et al., 1920 | DH |
4.64 | 158.8 | Domalski and Hearing, 1996 | AC |
4.962 | 158.7 | Parks, 1925 | DH |
Entropy of fusion
ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
31.3 | 159. | Yoshida, 1944 | DH |
31.68 | 158.5 | Kelley, 1929 | DH |
21.22 | 158.7 | Parks, 1925 | DH |
Entropy of fusion
ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
28.16 | 111.4 | Domalski and Hearing, 1996 | CAL |
29.25 | 158.8 | ||
5.2 | 127.5 | ||
31.0 | 159. |
Enthalpy of phase transition
ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
0.659 | 127.5 | crystaline, II | liquid | Haida, Suga, et al., 1977 | DH |
4.931 | 159.00 | crystaline, I | liquid | Haida, Suga, et al., 1977 | DH |
3.138 | 111.4 | crystaline, II | crystaline, I | Nikolaev, Rabinovich, et al., 1967 | DH |
4.644 | 158.8 | crystaline, I | liquid | Nikolaev, Rabinovich, et al., 1967 | DH |
Entropy of phase transition
ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
5.19 | 127.5 | crystaline, II | liquid | Haida, Suga, et al., 1977 | DH |
31.01 | 159.00 | crystaline, I | liquid | Haida, Suga, et al., 1977 | DH |
28.17 | 111.4 | crystaline, II | crystaline, I | Nikolaev, Rabinovich, et al., 1967 | DH |
29.24 | 158.8 | crystaline, I | liquid | Nikolaev, Rabinovich, et al., 1967 | 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.
Gude and Teja, 1995
Gude, M.; Teja, A.S.,
Vapor-Liquid Critical Properties of Elements and Compounds. 4. Aliphatic Alkanols,
J. Chem. Eng. Data, 1995, 40, 1025-1036. [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]
Mejia, Segura, et al., 2010
Mejia, Andres; Segura, Hugo; Cartes, Marcela,
Vapor-Liquid Equilibria and Interfacial Tensions of the System Ethanol + 2-Methoxy-2-methylpropane,
J. Chem. Eng. Data, 2010, 55, 1, 428-434, https://doi.org/10.1021/je9004068
. [all data]
Aucejo, Loras, et al., 1999
Aucejo, Antonio; Loras, Sonia; Muñoz, Rosa; Ordoñez, Luis Miguel,
Isobaric vapor--liquid equilibrium for binary mixtures of 2-methylpentane+ethanol and +2-methyl-2-propanol,
Fluid Phase Equilibria, 1999, 156, 1-2, 173-183, https://doi.org/10.1016/S0378-3812(99)00029-1
. [all data]
Diogo, Santos, et al., 1995
Diogo, Hermínio P.; Santos, Rui C.; Nunes, Paulo M.; Minas da Piedade, Manuel E.,
Ebulliometric apparatus for the measurement of enthalpies of vaporization,
Thermochimica Acta, 1995, 249, 113-120, https://doi.org/10.1016/0040-6031(95)90678-9
. [all data]
Ortega, Susial, et al., 1990
Ortega, Juan; Susial, Pedro; De Alfonso, Casiano,
Isobaric vapor-liquid equilibrium of methyl butanoate with ethanol and 1-propanol binary systems,
J. Chem. Eng. Data, 1990, 35, 2, 216-219, https://doi.org/10.1021/je00060a037
. [all data]
Vine and Wormald, 1989
Vine, M.D.; Wormald, C.J.,
The enthalpy of ethanol,
The Journal of Chemical Thermodynamics, 1989, 21, 11, 1151-1157, https://doi.org/10.1016/0021-9614(89)90101-8
. [all data]
Dong, Lin, et al., 1988
Dong, Jin-Quan; Lin, Rui-Sen; Yen, Wen-Hsing,
Heats of vaporization and gaseous molar heat capacities of ethanol and the binary mixture of ethanol and benzene,
Can. J. Chem., 1988, 66, 4, 783-790, https://doi.org/10.1139/v88-136
. [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, Counsell, et al., 1970
Ambrose, D.; Counsell, J.F.; Davenport, A.J.,
The use of Chebyshev polynomials for the representation of vapour pressures between the triple point and the critical point,
The Journal of Chemical Thermodynamics, 1970, 2, 2, 283-294, https://doi.org/10.1016/0021-9614(70)90093-5
. [all data]
Wilhoit and Zwolinski, 1973
Wilhoit, R.C.; Zwolinski, B.J.,
Physical and thermodynamic properties of aliphatic alcohols,
J. Phys. Chem. Ref. Data Suppl., 1973, 1, 2, 1. [all data]
Counsell, Fenwick, et al., 1970
Counsell, J.F.; Fenwick, J.O.; Lees, E.B.,
Thermodynamic properties of organic oxygen compounds 24. Vapour heat capacities and enthalpies of vaporization of ethanol, 2-methylpropan-1-ol, and pentan-1-ol,
The Journal of Chemical Thermodynamics, 1970, 2, 3, 367-372, https://doi.org/10.1016/0021-9614(70)90007-8
. [all data]
Van Ness, Soczek, et al., 1967
Van Ness, Hendrick C.; Soczek, C.A.; Peloquin, G.L.; Machado, R.L.,
Thermodynamic excess properties of three alcohol-hydrocarbon systems,
J. Chem. Eng. Data, 1967, 12, 2, 217-224, https://doi.org/10.1021/je60033a017
. [all data]
Kretschmer and Wiebe, 1949
Kretschmer, Carl B.; Wiebe, Richard.,
Liquid-Vapor Equilibrium of Ethanol--Toluene Solutions,
J. Am. Chem. Soc., 1949, 71, 5, 1793-1797, https://doi.org/10.1021/ja01173a076
. [all data]
Oguri, Anjo, et al., 1934
Oguri, S.; Anjo, S.; Kuwabara, Y.,
Bull. Waseda Appl. Chem. Soc., 1934, 22, 1. [all data]
Kahlbaum, 1883
Kahlbaum, Georg W.A.,
Ueber die Abhängigkeit der Siedetemperatur vom Luftdruck,
Ber. Dtsch. Chem. Ges., 1883, 16, 2, 2476-2484, https://doi.org/10.1002/cber.188301602178
. [all data]
Ambrose, Sprake, et al., 1975
Ambrose, D.; Sprake, C.H.S.; Townsend, R.,
Thermodynamic Properties of Organic Oxygen Compounds. XXXVII. Vapour Pressures of Methanol, Ethanol, Pentan-1-ol, and Octan-1-ol from the Normal Boiling Temperature to the Critical Temperature,
J. Chem. Thermodyn., 1975, 7, 2, 185-190, https://doi.org/10.1016/0021-9614(75)90267-0
. [all data]
Ambrose and Sprake, 1970
Ambrose, D.; Sprake, C.H.S.,
Thermodynamic properties of organic oxygen compounds XXV. Vapour pressures and normal boiling temperatures of aliphatic alcohols,
The Journal of Chemical Thermodynamics, 1970, 2, 5, 631-645, https://doi.org/10.1016/0021-9614(70)90038-8
. [all data]
Yoshida, 1944
Yoshida, U.,
Structural relaxation of amorphous solids and the cybotactic structure of super-cooled liquids,
Mem. Coll. Sci. Kyoto Imp. Univ., 1944, 24A, 135-148. [all data]
Kelley, 1929
Kelley, K.K.,
The heat capacities of ethyl and hexyl alcohols from 16°K to 298°K and the corresponding entropies and free energies,
J. Am. Chem. Soc., 1929, 51, 779-786. [all data]
Gibson, Parks, et al., 1920
Gibson, G.E.; Parks, G.S.; Latimer, W.M.,
Entropy changes at low temperatures. II. Ethyl and propyl alcohols and their equal molal mixture,
J. Am. Chem. Soc., 1920, 42, 1542-1550. [all data]
Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D.,
Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III,
J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985
. [all data]
Parks, 1925
Parks, G.S.,
Thermal data on organic compounds I. The heat capacities and free energies of methyl, ethyl and normal-butyl alcohols,
J. Am. Chem. Soc., 1925, 47, 338-345. [all data]
Haida, Suga, et al., 1977
Haida, O.; Suga, H.; Seki, S.,
Calorimetric study of the glassy state. XII. Plural glass-transition phenomena of ethanol,
J. Chem. Thermodynam., 1977, 9, 1133-1148. [all data]
Nikolaev, Rabinovich, et al., 1967
Nikolaev, P.N.; Rabinovich, I.B.; Lebedev, B.V.,
Specific heat of H- and D-ethyl alcohol in the interval 80-250K,
Zhur. Fiz. Khim., 1967, 41, 1294-1299. [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 Ttriple Triple point temperature Vc Critical volume ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion 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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