2-Pentanol
- Formula: C5H12O
- Molecular weight: 88.1482
- IUPAC Standard InChIKey: JYVLIDXNZAXMDK-UHFFFAOYSA-N
- CAS Registry Number: 6032-29-7
- 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. - Stereoisomers:
- Other names: sec-Amyl alcohol; sec-Pentanol; Methylpropylcarbinol; 1-Methyl-1-butanol; 1-Methylbutanol; 2-Pentyl alcohol; n-C3H7CH(OH)CH3; Pentanol-2; Pentan-2-ol; sec-n-Amyl alcohol; Isoamyl alcohol, secondary; sec-Pentyl alcohol
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Phase change data
Go To: Top, 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 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 | 392. ± 1. | K | AVG | N/A | Average of 40 out of 43 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 560.3 ± 0.3 | K | AVG | N/A | Average of 6 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 36.3 ± 0.2 | atm | N/A | Gude and Teja, 1995 | |
Pc | 35.92 | atm | N/A | Quadri, Khilar, et al., 1991 | Uncertainty assigned by TRC = 0.39 atm; TRC |
Pc | 36.61 | atm | N/A | Rosenthal and Teja, 1990 | Uncertainty assigned by TRC = 0.20 atm; TRC |
Pc | 36.61 | atm | N/A | Rosenthal and Teja, 1989 | Uncertainty assigned by TRC = 0.20 atm; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Vc | 0.329 | l/mol | N/A | Gude and Teja, 1995 | |
Quantity | Value | Units | Method | Reference | Comment |
ρc | 3.04 ± 0.02 | mol/l | N/A | Gude and Teja, 1995 | |
ρc | 3.04 | mol/l | N/A | Smith, Anselme, et al., 1986 | Uncertainty assigned by TRC = 0.23 mol/l; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 12.8 | kcal/mol | CGC | Chickos, Hosseini, et al., 1995 | Based on data from 323. to 373. K.; AC |
ΔvapH° | 13.0 ± 0.05 | kcal/mol | C | Majer, Svoboda, et al., 1985 | AC |
ΔvapH° | 12.6 ± 0.31 | kcal/mol | V | Connett, 1970 | ALS |
ΔvapH° | 12.56 ± 0.30 | kcal/mol | V | Chao and Rossini, 1965 | Heat of formation derived by Cox and Pilcher, 1970; ALS |
ΔvapH° | 12.7 | kcal/mol | C | McCurdy and Laidler, 1963 | AC |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
12.2 | 339. | EB | Gierycz, Kosowski, et al., 2009 | Based on data from 324. to 391. K.; AC |
14.1 | 289. | A | Stephenson and Malanowski, 1987 | Based on data from 274. to 393. K.; AC |
12.6 ± 0.05 | 313. | C | Majer, Svoboda, et al., 1985 | AC |
12.2 ± 0.05 | 328. | C | Majer, Svoboda, et al., 1985 | AC |
11.7 ± 0.05 | 343. | C | Majer, Svoboda, et al., 1985 | AC |
11.2 ± 0.02 | 358. | C | Majer, Svoboda, et al., 1985 | AC |
10.9 ± 0.02 | 368. | C | Majer, Svoboda, et al., 1985 | AC |
12.0 | 337. | N/A | Sachek, Markovnik, et al., 1984 | Based on data from 322. to 393. K.; AC |
12.9 | 313. | N/A | Wilhoit and Zwolinski, 1973 | Based on data from 298. to 393. K.; AC |
12.8 | 313. | N/A | Butler, Ramchandani, et al., 1935 | Based on data from 298. to 383. K. See also Boublik, Fried, et al., 1984.; AC |
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 |
---|---|---|---|---|---|
298.12 to 383.34 | 4.41778 | 1291.212 | -100.017 | Butler, Ramchandani, et al., 1935, 2 | Coefficents calculated by NIST from author's data. |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
2.03 | 200. | Lohmann, Joh, et al., 1997 | AC |
IR Spectrum
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 by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Gas Phase Spectrum
Notice: This spectrum may be better viewed with a Javascript and HTML 5 enabled browser.
Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.
Additional Data
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Download spectrum in JCAMP-DX format.
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 |
Mass spectrum (electron ionization)
Go To: Top, Phase change 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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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 | NIST Mass Spectrometry Data Center, 1990. |
NIST MS number | 114384 |
References
Go To: Top, Phase change 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.
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]
Quadri, Khilar, et al., 1991
Quadri, S.K.; Khilar, K.C.; Kudchadker, A.P.; Patni, M.J.,
Measurement of the critical temperatures and critical pressures of some thermally stable or mildly unstable alkanols,
J. Chem. Thermodyn., 1991, 23, 67-76. [all data]
Rosenthal and Teja, 1990
Rosenthal, D.J.; Teja, A.S.,
The Critical Pressures and temperatures of Isomeric Alkanols,
Ind. Eng. Chem. to be published 1990 1990, 1990. [all data]
Rosenthal and Teja, 1989
Rosenthal, D.J.; Teja, A.S.,
Critical pressures and temperatures of isomeric alkanols,
Ind. Eng. Chem. Res., 1989, 28, 1693. [all data]
Smith, Anselme, et al., 1986
Smith, R.L.; Anselme, M.J.; Teja, A.S.,
The Critical Temperatures of Isomeric Pentanols and Heptanols,
Fluid Phase Equilib., 1986, 31, 161. [all data]
Chickos, Hosseini, et al., 1995
Chickos, James S.; Hosseini, Sarah; Hesse, Donald G.,
Determination of vaporization enthalpies of simple organic molecules by correlations of changes in gas chromatographic net retention times,
Thermochimica Acta, 1995, 249, 41-62, https://doi.org/10.1016/0040-6031(95)90670-3
. [all data]
Majer, Svoboda, et al., 1985
Majer, V.; Svoboda, V.; Lencka, M.,
Enthalpies of vaporization and cohesive energies of dimethylpyridines and trimethylpyridines,
The Journal of Chemical Thermodynamics, 1985, 17, 4, 365-370, https://doi.org/10.1016/0021-9614(85)90133-8
. [all data]
Connett, 1970
Connett, J.E.,
Chemical equilibria. Part III. Dehydrogenation of pentan-1-ol, pentan-2-ol, and 3-methylbutan-2-ol,
J. Chem. Soc. A, 1970, 1284-1286. [all data]
Chao and Rossini, 1965
Chao, J.; Rossini, F.D.,
Heats of combustion, formation, and isomerization of nineteen alkanols,
J. Chem. Eng. Data, 1965, 10, 374-379. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]
McCurdy and Laidler, 1963
McCurdy, K.G.; Laidler, K.J.,
HEATS OF VAPORIZATION OF A SERIES OF ALIPHATIC ALCOHOLS,
Can. J. Chem., 1963, 41, 8, 1867-1871, https://doi.org/10.1139/v63-274
. [all data]
Gierycz, Kosowski, et al., 2009
Gierycz, Pawel; Kosowski, Andrzej; Swietlik, Ryszard,
Vapor-Liquid Equilibria in Binary Systems Formed by Cyclohexane with Alcohols,
J. Chem. Eng. Data, 2009, 54, 11, 2996-3001, https://doi.org/10.1021/je900050z
. [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]
Sachek, Markovnik, et al., 1984
Sachek, A.I.; Markovnik, V.S.; Peshchenko, A.D.; Shvaro, A.V.; Andreevskii, D.N.,
Khim. Prom-st. (Moscow), 1984, 337. [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]
Butler, Ramchandani, et al., 1935
Butler, J.A.V.; Ramchandani, C.N.; Thomson, D.W.,
58. The solubility of non-electrolytes. Part I. The free energy of hydration of some aliphatic alcohols,
J. Chem. Soc., 1935, 280, https://doi.org/10.1039/jr9350000280
. [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]
Butler, Ramchandani, et al., 1935, 2
Butler, J.A.V.; Ramchandani, C.N.; Thomson, D.W.,
The Solubility of Non-Electrolytes. Part 1. The Free Energy of Hydration of Some Alphatic Alcohols,
J. Chem. Soc., 1935, 280-285, https://doi.org/10.1039/jr9350000280
. [all data]
Lohmann, Joh, et al., 1997
Lohmann, J.; Joh, R.; Gmehling, J.,
Solid-Liquid Equilibria of Viscous Binary Mixtures with Alcohols,
J. Chem. Eng. Data, 1997, 42, 6, 1170-1175, https://doi.org/10.1021/je9700683
. [all data]
Notes
Go To: Top, Phase change data, IR Spectrum, Mass spectrum (electron ionization), References
- Symbols used in this document:
Pc Critical pressure Tboil Boiling point Tc Critical temperature Vc Critical volume ΔfusH Enthalpy 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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