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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Condensed 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:
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 |
---|---|---|---|---|---|
ΔfH°liquid | -403.4 ± 0.5 | kJ/mol | Ccb | Mosselman and Dekker, 1975 | ALS |
ΔfH°liquid | -403.2 ± 0.8 | kJ/mol | Ccb | Hayes, 1971 | DRB |
ΔfH°liquid | -398.8 ± 0.84 | kJ/mol | Ccb | Chao and Rossini, 1965 | see Rossini, 1934; ALS |
ΔfH°liquid | -409.4 ± 2.3 | kJ/mol | Ccb | Green, 1960 | ALS |
ΔfH°liquid | -460.4 ± 3.0 | kJ/mol | Ccb | Verkade and Coops, 1927 | estimated uncertainty; DRB |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -4637.8 ± 0.5 | kJ/mol | Ccb | Mosselman and Dekker, 1975 | Corresponding ΔfHºliquid = -403.4 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
ΔcH°liquid | -4638.01 ± 0.79 | kJ/mol | Ccb | Hayes, 1971 | Corresponding ΔfHºliquid = -403.2 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
ΔcH°liquid | -4642.52 ± 0.71 | kJ/mol | Ccb | Chao and Rossini, 1965 | see Rossini, 1934; Corresponding ΔfHºliquid = -398.7 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
ΔcH°liquid | -4631.9 ± 2.3 | kJ/mol | Ccb | Green, 1960 | Corresponding ΔfHºliquid = -409.3 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
ΔcH°liquid | -4631.90 | kJ/mol | Ccb | Verkade and Coops, 1927 | Corrected for 298 and 1 atm.; Corresponding ΔfHºliquid = -409.3 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
Quantity | Value | Units | Method | Reference | Comment |
S°liquid | 325.9 | J/mol*K | N/A | Parks, Kennedy, et al., 1956 | Extrapolation below 80 K, 65.06 J/mol*K.; DH |
Constant pressure heat capacity of liquid
Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
270.8 | 298.15 | Vesely, Barcal, et al., 1989 | T = 298.15 to 318.15 K.; DH |
272.29 | 298.15 | Andreoli-Ball, Patterson, et al., 1988 | DH |
297.0 | 303.35 | Naziev and Bashirov, 1988 | T = 303 to 447 K. p = 0.1 MPa. Unsmoothed experimental datum given as 2.556 kJ/kg*K. Cp data given at pressures from 0.1 to 50 MPa.; DH |
273.67 | 298.15 | Zegers and Somsen, 1984 | DH |
278.9 | 302.97 | Griigo'ev, Yanin, et al., 1979 | T = 303 to 462 K. p = 0.98 bar.; DH |
274.1 | 298. | Hutchinson and Bailey, 1959 | DH |
278.57 | 298.15 | Parks, Kennedy, et al., 1956 | T = 80 to 300 K.; DH |
Phase change data
Go To: Top, Condensed 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, 2 | 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)
View plot Requires a JavaScript / HTML 5 canvas capable browser.
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 | DH |
Entropy of fusion
ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
75.60 | 240.4 | Parks, Kennedy, et al., 1956 | DH |
Gas phase ion energetics data
Go To: Top, Condensed 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, Condensed 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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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- 546 |
NIST MS number | 228384 |
References
Go To: Top, Condensed 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.
Mosselman and Dekker, 1975
Mosselman, C.; Dekker, H.,
Enthalpies of formation of n-alkan-1-ols,
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Hayes, 1971
Hayes, C.W.,
Bomb calorimetric studies on normal alkan-1-ols, steroregular polymethylmethacrylates, α-olefinic polymers, trioxane and oxygenated polymers,
Diss. Abs., 1971, 31, 5903-5904. [all data]
Chao and Rossini, 1965
Chao, J.; Rossini, F.D.,
Heats of combustion, formation, and isomerization of nineteen alkanols,
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Rossini, 1934
Rossini, F.D.,
Heats of combustion and of formation of the normal aliphatic alcohols in the gaseous and liquid states, and the energies of their atomic linkages,
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Green, 1960
Green, J.H.S.,
Revision of the values of the heats of formation of normal alcohols,
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Verkade and Coops, 1927
Verkade, P.E.; Coops, J., Jr.,
Calorimetric researches XIV. Heats of combustion of successive members of homologous series: the normal primary aliphatic alcohols,
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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.,
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Vesely, Barcal, et al., 1989
Vesely, F.; Barcal, P.; Zabransky, M.; Svoboda, V.,
Heat capacities of 4-methyl-2-pentanone, 2,6-dimethyl-4-heptanone, 1-hexanol, 1-heptanol, and 1-octanol in the temperature range 298-318 K,
Collect. Czech. Chem. Commun., 1989, 54, 602-607. [all data]
Andreoli-Ball, Patterson, et al., 1988
Andreoli-Ball, L.; Patterson, D.; Costas, M.; Caceres-Alonso, M.,
Heat capacity and corresponding states in alkan-1-ol-n-alkane systems, J. Chem. Soc.,
Faraday Trans. 1, 1988, 84(11), 3991-4012. [all data]
Naziev and Bashirov, 1988
Naziev, Ya.M.; Bashirov, M.M.,
Isobaric specific heats of higher alcohols at elevated pressures,
Teplofiz. Vysok. Temp., 1988, 26, 58-62. [all data]
Zegers and Somsen, 1984
Zegers, H.C.; Somsen, G.,
Partial molar volumes and heat capacities in (dimethylformamide + an n-alkanol),
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Griigo'ev, Yanin, et al., 1979
Griigo'ev, B.A.; Yanin, G.S.; Rastorguev, Yu.L.; Thermophysical parameters of alcohols, Tr. GIAP,
54, 1979, 57-64. [all data]
Hutchinson and Bailey, 1959
Hutchinson, E.; Bailey, L.G.,
A thermodynamic study of colloidal electrolyte solutions. II. Heat capacities of solubilized systems, experimental,
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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]
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Bilterys, R.; Gisseleire, J.,
Investigations on the Congelation Temperature of Organic Compounds,
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Timmermans, 1922
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Investigation of the Freezing Point of Organic Substances VII,
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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,
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Gude and Teja, 1995
Gude, M.; Teja, A.S.,
Vapor-Liquid Critical Properties of Elements and Compounds. 4. Aliphatic Alkanols,
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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,
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Rosenthal and Teja, 1990
Rosenthal, D.J.; Teja, A.S.,
The Critical Pressures and temperatures of Isomeric Alkanols,
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Rosenthal and Teja, 1989
Rosenthal, D.J.; Teja, A.S.,
Critical pressures and temperatures of isomeric alkanols,
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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,
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Efremov, 1966
Efremov, Yu.V.,
Density, Surface Tension, Saturated Vapor Pressurs and Critical Parameters of Alcohols,
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Weast and Grasselli, 1989
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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,
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. [all data]
Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw,
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. [all data]
Kemme and Kreps, 1969
Kemme, Herbert R.; Kreps, Saul I.,
Vapor pressure of primary n-alkyl chlorides and alcohols,
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Physical and thermodynamic properties of aliphatic alcohols,
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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,
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Boublik, Fried, et al., 1984
Boublik, T.; Fried, V.; Hala, E.,
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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,
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. [all data]
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Proton affinities of primary alkanols: An appraisal of the kinetic method,
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The loss of water from ionized heptanols in the gas phase,
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Ashmore and Burgess, 1977
Ashmore, F.S.; Burgess, A.R.,
Study of Some Medium Size Alcohols and Hydroperoxides by Photoelectron Spectroscopy,
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Higgins, P.R.; Bartmess, J.E.,
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Haas, M.J.; Harrison, A.G.,
The Fragmentation of Proton-Bound Cluster Ions and the Gas-Phase Acidities of Alcohols,
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The gas phase acidity of aliphatic alcohols,
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Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid Pc Critical pressure S°liquid Entropy of liquid at standard conditions Tboil Boiling point Tc Critical temperature Tfus Fusion (melting) point Ttriple Triple point temperature Vc Critical volume ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°liquid Enthalpy of formation of liquid 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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