Propanal
- Formula: C3H6O
- Molecular weight: 58.0791
- IUPAC Standard InChIKey: NBBJYMSMWIIQGU-UHFFFAOYSA-N
- CAS Registry Number: 123-38-6
- 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. - Other names: Propionaldehyde; Methylacetaldehyde; Propaldehyde; Propional; Propionic aldehyde; Propylaldehyde; Propylic aldehyde; C2H5CHO; n-Propionaldehyde; Propanalaldehyde; n-Propanal; Aldehyde propionique; Propanaldehyde; NCI-C61029; UN 1275; 1-Propanone; 1-Propanal; Proprionaldehyde; NSC 6493
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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:
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 | -45.09 ± 0.18 | kcal/mol | Cm | Wiberg, Crocker, et al., 1991 | Heat of hydrogenation; ALS |
ΔfH°gas | -44.46 ± 0.36 | kcal/mol | Eqk | Connett, 1972 | At 473-524 K; ALS |
ΔfH°gas | -45.55 ± 0.21 | kcal/mol | Chyd | Buckley and Cox, 1967 | ALS |
ΔfH°gas | -45.9 | kcal/mol | Ccb | Tjebbes, 1962 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
S°gas | 72.75 ± 0.38 | cal/mol*K | N/A | Connett, 1972 | This value was determined from the equilibrium measurements using improved experimental techniques. It agrees with values obtained by statistical mechanics. Earlier the value of 293.8(1.3) J/mol*K was obtained from equilibrium study [ Buckley E., 1967].; GT |
Constant pressure heat capacity of gas
Cp,gas (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
18.52 | 273.15 | Chao J., 1986 | p=1 bar. The values of thermodynamic functions of [ Frankiss S.G., 1974] were adopted by [ Chao J., 1986]. [ Chermin, 1961, Vasilev I.A., 1966] calculated the thermodynamic functions of the cis isomer only.; GT |
19.29 ± 0.024 | 298.15 | ||
19.35 | 300. | ||
23.04 | 400. | ||
26.984 | 500. | ||
30.712 | 600. | ||
34.082 | 700. | ||
37.094 | 800. | ||
39.771 | 900. | ||
42.137 | 1000. | ||
44.240 | 1100. | ||
46.104 | 1200. | ||
47.753 | 1300. | ||
49.259 | 1400. | ||
50.598 | 1500. |
Constant pressure heat capacity of gas
Cp,gas (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
20.20 | 325.04 | Counsell J.F., 1972 | GT |
21.13 | 350.07 | ||
22.04 | 374.50 |
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
DRB - Donald R. Burgess, Jr.
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 | 322. ± 2. | K | AVG | N/A | Average of 38 out of 40 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 180. ± 20. | K | AVG | N/A | Average of 6 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 171.32 | K | N/A | Vasil'ev and Petrov, 1984 | Uncertainty assigned by TRC = 0.01 K; TRC |
Ttriple | 171.15 | K | N/A | Korkhov and Vasil'ev, 1977 | Uncertainty assigned by TRC = 0.1 K; TRC |
Ttriple | 171.32 | K | N/A | Korkhov and Vasil'ev, 1977 | Uncertainty assigned by TRC = 0.05 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 600. ± 200. | K | AVG | N/A | Average of 6 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 51.91 | atm | N/A | Gude and Teja, 1994 | Uncertainty assigned by TRC = 0.59 atm; by the flow method; TRC |
Pc | 52.01 | atm | N/A | Gude and Teja, 1994 | Uncertainty assigned by TRC = 0.987 atm; by sealed ampule; TRC |
Pc | 52.01 | atm | N/A | Teja and Rosenthal, 1990 | Uncertainty assigned by TRC = 0.987 atm; TRC |
Pc | 67.8000 | atm | N/A | Bougard and Jadot, 1977 | source of data not clear; TRC |
Pc | 67.8000 | atm | N/A | Svoboda, Vesely, et al., 1977 | Uncertainty assigned by TRC = 2.000 atm; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ρc | 4.91 | mol/l | N/A | Anselme and Teja, 1990 | Uncertainty assigned by TRC = 0.09 mol/l; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 7.10 ± 0.07 | kcal/mol | AVG | N/A | Average of 11 values; Individual data points |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
6.766 | 321.1 | N/A | Majer and Svoboda, 1985 | |
6.7686 | 321.08 | N/A | Korkhov and Vasil'ev, 1977, 2 | DH |
7.24 | 305. | A | Stephenson and Malanowski, 1987 | Based on data from 290. to 322. K. See also Dykyj, 1970.; AC |
7.62 | 265. | EB | Stephenson and Malanowski, 1987 | Based on data from 250. to 330. K. See also Smith and Bonner, 1951.; AC |
7.53 | 278. | N/A | Kim and Kim, 1977 | Based on data from 263. to 373. K.; AC |
7.29 | 301. | N/A | Ambrose and Sprake, 1974 | Based on data from 286. to 321. K.; AC |
6.76 | 321. | N/A | Counsell and Lee, 1972 | AC |
7.03 | 303. | N/A | Counsell and Lee, 1972 | AC |
7.24 | 286. | N/A | Counsell and Lee, 1972 | 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 |
---|---|---|---|---|---|
286. to 321. | 10.63 | 0.2676 | 496.2 | Majer and Svoboda, 1985 |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
2.053 | 171.32 | Korkhov and Vasil'ev, 1977, 2 | DH |
2.05 | 171.3 | Domalski and Hearing, 1996 | AC |
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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias
Data compiled as indicated in comments:
B - John E. Bartmess
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
View reactions leading to C3H6O+ (ion structure unspecified)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 9.96 ± 0.01 | eV | N/A | N/A | L |
Quantity | Value | Units | Method | Reference | Comment |
Proton affinity (review) | 187.9 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 180.2 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Electron affinity determinations
EA (eV) | Reference | Comment |
---|---|---|
0.000999 ± 0.000087 | Hammer, Diri, et al., 2003 | B |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
9.96 | PI | Traeger, 1985 | LBLHLM |
9.96 | PI | Traeger, 1985, 2 | LBLHLM |
9.82 ± 0.14 | EI | El-Sherbini, Allam, et al., 1981 | LLK |
9.95 | PI | Staley, Wieting, et al., 1977 | LLK |
9.953 ± 0.005 | PE | Hernandez, Masclet, et al., 1977 | LLK |
9.99 | PE | Tam, Yee, et al., 1974 | LLK |
9.97 ± 0.01 | PE | Cocksey, Eland, et al., 1971 | LLK |
9.94 | PE | Dewar and Worley, 1969 | RDSH |
9.98 ± 0.01 | PI | Watanabe, Nakayama, et al., 1962 | RDSH |
9.96 | PE | Benoit and Harrison, 1977 | Vertical value; LLK |
9.85 | PE | Kimura, Katsumata, et al., 1975 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
CHO+ | 11.79 | C2H5 | PI | Traeger, 1985 | LBLHLM |
C2H3O+ | 12.3 ± 0.05 | CH3 | EI | Burgers and Holmes, 1982 | LBLHLM |
C2H3O+ | 10.79 | CH3 | PI | Staley, Wieting, et al., 1977 | LLK |
C3H5O+ | 10.18 | H | PI | Traeger, 1985, 2 | LBLHLM |
De-protonation reactions
C3H5O- + =
By formula: C3H5O- + H+ = C3H6O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 365.2 ± 2.1 | kcal/mol | G+TS | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale; B |
ΔrH° | 366.0 ± 2.4 | kcal/mol | G+TS | Cumming and Kebarle, 1978 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 358.7 ± 2.0 | kcal/mol | IMRE | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale; B |
ΔrG° | 359.4 ± 2.0 | kcal/mol | IMRE | Cumming and Kebarle, 1978 | gas phase; 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
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, 1998. |
NIST MS number | 291282 |
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.
Wiberg, Crocker, et al., 1991
Wiberg, K.B.; Crocker, L.S.; Morgan, K.M.,
Thermochemical studies of carbonyl compounds. 5. Enthalpies of reduction of carbonyl groups,
J. Am. Chem. Soc., 1991, 113, 3447-3450. [all data]
Connett, 1972
Connett, J.E.,
Chemical equilibria. 5. Measurement of equilibrium constants for the dehydrogenation of propanol by a vapour flow technique,
J. Chem. Thermodyn., 1972, 4, 233-237. [all data]
Buckley and Cox, 1967
Buckley, E.; Cox, J.D.,
Chemical equilibria. Part 2.-Dehydrogenation of propanol and butanol,
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Tjebbes, 1962
Tjebbes, J.,
Heats of combustion of propanal and 2-methyl propanal,
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Buckley E., 1967
Buckley E.,
Chemical equilibria. Part 2. Dehydrogenation of propanol and butanol,
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Thermodynamic properties of key organic oxygen compounds in the carbon range C1 to C4. Part 2. Ideal gas properties,
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Frankiss S.G., 1974
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Thermodynamic properties of organic oxygen compounds. Part 36. Chemical thermodynamic properties of propanal,
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Chermin, 1961
Chermin, H.A.G.,
Thermo data for petrochemicals. Part 27: Gaseous normal aldehydes. The important thermo properties are presented for all the gaseous normal aldehydes from formaldehyde through decaldehyde,
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Vasilev I.A., 1966
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Thermodynamic functions of propionaldehyde,
Zh. Fiz. Khim., 1966, 40, 842-847. [all data]
Counsell J.F., 1972
Counsell J.F.,
Thermodynamic properties of organic oxygen compounds. 30. Vapor heat capacity and enthalpy of vaporization of propanal,
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Vasil'ev and Petrov, 1984
Vasil'ev, I.A.; Petrov, V.M.,
Thermodynamic Properties of Oxygen-containing Organic Compounds, Handbook, Soedinenii: Khimya, Leningrad, p 240, 1984. [all data]
Korkhov and Vasil'ev, 1977
Korkhov, A.D.; Vasil'ev, I.A.,
Heat capacity and thermodynamic functions of propionaldehyde at low temperatures.,
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Gude and Teja, 1994
Gude, M.T.; Teja, A.S.,
The Critical Properties of Several n-Alkanals, Tetralin and NMP,
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Teja and Rosenthal, 1990
Teja, A.S.; Rosenthal, D.J.,
The Critical Pressures and Temperatures of Twelve Substances Using A Low Residence Time Flow Apparatus,
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Bougard and Jadot, 1977
Bougard, J.; Jadot, R.,
Isothermal Vapor-Liquid Equilibria for the System 1,2-Dichloropropane- Propanal,
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Svoboda, V.; Vesely, F.; Holub, R.; Pick, J.,
Heats of vaporization of alkyl acetates and propionates,
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Anselme and Teja, 1990
Anselme, M.J.; Teja, A.S.,
The critical properties of rapidly reacting substances,
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Majer, V.; Svoboda, V.,
Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation, Blackwell Scientific Publications, Oxford, 1985, 300. [all data]
Korkhov and Vasil'ev, 1977, 2
Korkhov, A.D.; Vasil'ev, I.A.,
Heat capacity and thermodynamic functions of propanal at low temperatures,
Termodin. Org. Soedin., 1977, (6), 34-37. [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]
Dykyj, 1970
Dykyj, J.,
Petrochemica, 1970, 10, 2, 51. [all data]
Smith and Bonner, 1951
Smith, Thomas E.; Bonner, Robert F.,
Acetaldehyde, Propionaldehyde, and n-Butyraldehyde,
Ind. Eng. Chem., 1951, 43, 5, 1169-1173, https://doi.org/10.1021/ie50497a049
. [all data]
Kim and Kim, 1977
Kim, B.C.; Kim, D.H.,
Hwahak Kwa Hwahak Kongop, 1977, 20, 232. [all data]
Ambrose and Sprake, 1974
Ambrose, D.; Sprake, C.H.S.,
Thermodynamic properties of organic oxygen compounds 32. Vapour pressure and second virial coefficient of propanal,
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. [all data]
Counsell and Lee, 1972
Counsell, J.F.; Lee, D.A.,
Thermodynamic properties of organic oxygen compounds 30. Vapour heat capacity and enthalpy of vaporization of propanal,
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Domalski and Hearing, 1996
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Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III,
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Hunter and Lias, 1998
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Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update,
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Hammer, Diri, et al., 2003
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Dipole-bound anions of carbonyl, nitrile, and sulfoxide containing molecules,
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Traeger, 1985
Traeger, J.C.,
Heat of formation for the formyl cation by photoionization mass spectrometry,
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Traeger, J.C.,
Heat of formation for the propanoyl cation by photoionization mass spectrometry,
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El-Sherbini, Allam, et al., 1981
El-Sherbini, T.M.; Allam, S.H.; Migahed, M.D.; Dawoud, A.M.,
Mass spectrometric investigation of aliphatic aldehydes,
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Staley, Wieting, et al., 1977
Staley, R.H.; Wieting, R.D.; Beauchamp, J.L.,
Carbenium ion stabilities in the gas phase and solution. An ion cyclotron resonance study of bromide transfer reactions involving alkali ions, alkyl carbenium ions, acyl cations and cyclic halonium ions,
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Spectroscopie de photoelectrons d'aldehydes et de cetones aliphatiques,
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Tam, W.-C.; Yee, D.; Brion, C.E.,
Photoelectron spectra of some aldehydes and ketones,
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Cocksey, Eland, et al., 1971
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The effect of alkyl substitution on ionisation potential,
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Photoelectron spectra of molecules. I. Ionization potentials of some organic molecules and their interpretation,
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Ionization potentials of some molecules,
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Predictive value of proton affinity. Ionization energy correlations involving oxygenated molecules,
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Bartmess, Scott, et al., 1979
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Cumming and Kebarle, 1978
Cumming, J.B.; Kebarle, P.,
Summary of gas phase measurements involving acids AH. Entropy changes in proton transfer reactions involving negative ions. Bond dissociation energies D(A-H) and electron affinities EA(A),
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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:
AE Appearance energy Cp,gas Constant pressure heat capacity of gas EA Electron affinity IE (evaluated) Recommended ionization energy 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 ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfusH Enthalpy 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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