1-Heptanol
- Formula: C7H16O
- Molecular weight: 116.2013
- IUPAC Standard InChIKey: BBMCTIGTTCKYKF-UHFFFAOYSA-N
- CAS Registry Number: 111-70-6
- 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. - Species with the same structure:
- Other names: Heptyl alcohol; n-Heptan-1-ol; n-Heptanol; n-Heptyl alcohol; Enanthic alcohol; Gentanol; 1-Hydroxyheptane; n-C7H15OH; Heptan-1-ol; Heptane-1-ol; Heptyl alcohol, n-; n-Heptanol-1; l'Alcool n-heptylique primaire; Alcohol C7; Enanthyl alcohol; 1-Heptyl alcohol; Heptanol-1; NSC 3703; 1-HeptanoI
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Gas phase thermochemistry data
Go To: Top, Phase change data, Gas phase ion energetics 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:
DRB - Donald R. Burgess, Jr.
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 | -340. ± 40. | kJ/mol | AVG | N/A | Average of 7 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
S°gas | 485.8 ± 4.2 | J/mol*K | N/A | Green J.H.S., 1961 | Values obtained by applying the methylene increment to data for the lower alcohols [ Chermin H.A.G., 1961, Green J.H.S., 1961, Thermodynamics Research Center, 1997] are lower than this third-law entropy by 5.3-6.4 J/mol*K.; GT |
Phase change data
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics 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
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 448. ± 2. | K | AVG | N/A | Average of 44 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 238.25 | K | N/A | Tschamler, Richter, et al., 1949 | Uncertainty assigned by TRC = 0.5 K; TRC |
Tfus | 239.4 | K | N/A | Bilterys and Gisseleire, 1935 | Uncertainty assigned by TRC = 0.5 K; TRC |
Tfus | 238.6 | K | N/A | Timmermans, 1922 | Uncertainty assigned by TRC = 0.4 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 240.0 | K | N/A | Parks, Kennedy, et al., 1956 | Uncertainty assigned by TRC = 0.2 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 633. ± 4. | K | AVG | N/A | Average of 8 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 30.6 ± 0.2 | bar | N/A | Gude and Teja, 1995 | |
Pc | 31.60 | bar | N/A | Quadri, Khilar, et al., 1991 | Uncertainty assigned by TRC = 0.50 bar; TRC |
Pc | 30.58 | bar | N/A | Rosenthal and Teja, 1990 | Uncertainty assigned by TRC = 0.20 bar; TRC |
Pc | 30.58 | bar | N/A | Rosenthal and Teja, 1989 | Uncertainty assigned by TRC = 0.20 bar; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Vc | 0.435 | l/mol | N/A | Gude and Teja, 1995 | |
Quantity | Value | Units | Method | Reference | Comment |
ρc | 2.30 ± 0.02 | mol/l | N/A | Gude and Teja, 1995 | |
ρc | 2.30 | mol/l | N/A | Teja, Lee, et al., 1989 | TRC |
ρc | 2.29 | mol/l | N/A | Smith, Anselme, et al., 1986 | Uncertainty assigned by TRC = 0.24 mol/l; TRC |
ρc | 2.30 | mol/l | N/A | Efremov, 1966 | Uncertainty assigned by TRC = 0.03 mol/l; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 67. ± 2. | kJ/mol | AVG | N/A | Average of 9 values; Individual data points |
Reduced pressure boiling point
Tboil (K) | Pressure (bar) | Reference | Comment |
---|---|---|---|
351.7 | 0.020 | Weast and Grasselli, 1989 | BS |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
65.2 | 310. | N/A | N'Guimbi, Kasehgari, et al., 1992 | Based on data from 258. to 363. K.; AC |
62.5 | 350. | A | Stephenson and Malanowski, 1987 | Based on data from 335. to 450. K.; AC |
62.6 | 351. | DTA | Stephenson and Malanowski, 1987 | Based on data from 336. to 450. K. See also Kemme and Kreps, 1969.; AC |
65.2 | 348. | N/A | Wilhoit and Zwolinski, 1973 | Based on data from 333. to 449. K.; AC |
62.9 | 348. | N/A | Butler, Ramchandani, et al., 1935 | Based on data from 333. to 425. K. See also Boublik, Fried, et al., 1984.; 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 |
---|---|---|---|---|
336.8 to 449.6 | 3.9794 | 1256.783 | -133.487 | Kemme and Kreps, 1969 |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
18.35 | 239.9 | van Miltenburg, Gabrielová, et al., 2003 | AC |
18.16 | 240.4 | Domalski and Hearing, 1996 | AC |
18.175 | 240.4 | Parks, Kennedy, et al., 1956, 2 | DH |
Entropy of fusion
ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
75.60 | 240.4 | Parks, Kennedy, et al., 1956, 2 | DH |
Gas phase ion energetics data
Go To: Top, Gas phase thermochemistry data, 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:
B - John E. Bartmess
MM - Michael M. Meot-Ner (Mautner)
LL - Sharon G. Lias and Joel F. Liebman
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
Proton affinity at 298K
Proton affinity (kJ/mol) | Reference | Comment |
---|---|---|
799. | Holmes, Aubry, et al., 1999 | MM |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
10.4 ± 0.1 | EI | Haib and Stahl, 1990 | LL |
9.84 | PE | Ashmore and Burgess, 1977 | LLK |
10.35 | PE | Ashmore and Burgess, 1977 | Vertical value; LLK |
De-protonation reactions
C7H15O- + =
By formula: C7H15O- + H+ = C7H16O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1567. ± 8.8 | kJ/mol | G+TS | Higgins and Bartmess, 1998 | gas phase; B |
ΔrH° | 1564. ± 13. | kJ/mol | CIDC | Haas and Harrison, 1993 | gas phase; Kinetic method gives energy-dependent results.; B |
ΔrH° | 1559. ± 12. | kJ/mol | G+TS | Boand, Houriet, et al., 1983 | gas phase; value altered from reference due to change in acidity scale; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1540. ± 8.4 | kJ/mol | IMRE | Higgins and Bartmess, 1998 | gas phase; B |
ΔrG° | 1536. ± 13. | kJ/mol | H-TS | Haas and Harrison, 1993 | gas phase; Kinetic method gives energy-dependent results.; B |
ΔrG° | 1531. ± 11. | kJ/mol | CIDC | Boand, Houriet, et al., 1983 | gas phase; value altered from reference due to change in acidity scale; B |
Mass spectrum (electron ionization)
Go To: Top, Gas phase thermochemistry data, Phase change data, Gas phase ion energetics 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
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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. |
---|---|
Origin | Japan AIST/NIMC Database- Spectrum MS-NW- 546 |
NIST MS number | 228384 |
References
Go To: Top, Gas phase thermochemistry data, Phase change data, Gas phase ion energetics 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.
Green J.H.S., 1961
Green J.H.S.,
Thermodynamic properties of the normal alcohols C1-C12,
J. Appl. Chem., 1961, 11, 397-404. [all data]
Chermin H.A.G., 1961
Chermin H.A.G.,
Thermo data for petrochemicals. Part 28. Gaseous normal alcohols. The important thermo properties are presented for all the gaseous normal alcohols from methanol through n-decanol,
Petrol. Refiner, 1961, 40 (4), 127-130. [all data]
Thermodynamics Research Center, 1997
Thermodynamics Research Center,
Selected Values of Properties of Chemical Compounds., Thermodynamics Research Center, Texas A&M University, College Station, Texas, 1997. [all data]
Tschamler, Richter, et al., 1949
Tschamler, H.; Richter, E.; Wettig, F.,
Mixtures of Primry Aliphatic Alcohols with Chlorex and Other Organic Substances. Binary Liquid Mixtures XII.,
Monatsh. Chem., 1949, 80, 749. [all data]
Bilterys and Gisseleire, 1935
Bilterys, R.; Gisseleire, J.,
Investigations on the Congelation Temperature of Organic Compounds,
Bull. Soc. Chim. Belg., 1935, 44, 567. [all data]
Timmermans, 1922
Timmermans, J.,
Investigation of the Freezing Point of Organic Substances VII,
Bull. Soc. Chim. Belg., 1922, 31, 389. [all data]
Parks, Kennedy, et al., 1956
Parks, G.S.; Kennedy, W.D.; Gates, R.R.; Mosley, J.R.; Moore, G.E.; Renquist, M.L.,
Thermal Data on Organic Compounds XXVI. Some Heat Capacity, Entropy and Free Energy Data for Seven Compounds Containing Oxygen,
J. Am. Chem. Soc., 1956, 78, 56-9. [all data]
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]
Teja, Lee, et al., 1989
Teja, A.S.; Lee, R.J.; Rosenthal, D.J.; Anselme, M.J.,
Correlation of the Critical Properties of Alkanes and Alkanols
in 5th IUPAC Conference on Alkanes and AlkanolsGradisca, 1989. [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]
Efremov, 1966
Efremov, Yu.V.,
Density, Surface Tension, Saturated Vapor Pressurs and Critical Parameters of Alcohols,
Zh. Fiz. Khim., 1966, 40, 1240. [all data]
Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]
N'Guimbi, Kasehgari, et al., 1992
N'Guimbi, J.; Kasehgari, H.; Mokbel, I.; Jose, J.,
Tensions de vapeur d'alcools primaires dans le domaine 0,3 Pa à 1,5 kPa,
Thermochimica Acta, 1992, 196, 2, 367-377, https://doi.org/10.1016/0040-6031(92)80100-B
. [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]
Kemme and Kreps, 1969
Kemme, Herbert R.; Kreps, Saul I.,
Vapor pressure of primary n-alkyl chlorides and alcohols,
J. Chem. Eng. Data, 1969, 14, 1, 98-102, https://doi.org/10.1021/je60040a011
. [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]
van Miltenburg, Gabrielová, et al., 2003
van Miltenburg, J. Cees; Gabrielová, Hana; Ruzicka, Kvetoslav,
Heat Capacities and Derived Thermodynamic Functions of 1-Hexanol, 1-Heptanol, 1-Octanol, and 1-Decanol between 5 K and 390 K,
J. Chem. Eng. Data, 2003, 48, 5, 1323-1331, https://doi.org/10.1021/je0340856
. [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, Kennedy, et al., 1956, 2
Parks, G.S.; Kennedy, W.D.; Gates, R.R.; Mosley, J.R.; Moore, G.E.; Renquist, M.L.,
Thermal data on organic compounds. XXVI. Some heat capacity, entropy and free energy data for seven compounds containing oxygen.,
Not In System, 1956, 78, 56-59. [all data]
Holmes, Aubry, et al., 1999
Holmes, J.L.; Aubry, C.; Mayer, P.M.,
Proton affinities of primary alkanols: An appraisal of the kinetic method,
J. Phys. Chem. A, 1999, 103, 705. [all data]
Haib and Stahl, 1990
Haib, J.; Stahl, D.,
The loss of water from ionized heptanols in the gas phase,
Org. Mass Spectrom., 1990, 25, 592. [all data]
Ashmore and Burgess, 1977
Ashmore, F.S.; Burgess, A.R.,
Study of Some Medium Size Alcohols and Hydroperoxides by Photoelectron Spectroscopy,
J. Chem. Soc. Faraday Trans. 2, 1977, 73, 1247. [all data]
Higgins and Bartmess, 1998
Higgins, P.R.; Bartmess, J.E.,
The Gas Phase Acidities of Long Chain Alcohols.,
Int. J. Mass Spectrom., 1998, 175, 1-2, 71-79, https://doi.org/10.1016/S0168-1176(98)00125-6
. [all data]
Haas and Harrison, 1993
Haas, M.J.; Harrison, A.G.,
The Fragmentation of Proton-Bound Cluster Ions and the Gas-Phase Acidities of Alcohols,
Int. J. Mass Spectrom. Ion Proc., 1993, 124, 2, 115, https://doi.org/10.1016/0168-1176(93)80003-W
. [all data]
Boand, Houriet, et al., 1983
Boand, G.; Houriet, R.; Baumann, T.,
The gas phase acidity of aliphatic alcohols,
J. Am. Chem. Soc., 1983, 105, 2203. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), References
- Symbols used in this document:
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 ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions 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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