Propanal

Formula: C₃H₆O
Molecular weight: 58.0791
IUPAC Standard InChI: InChI=1S/C3H6O/c1-2-3-4/h3H,2H2,1H3
IUPAC Standard InChIKey: NBBJYMSMWIIQGU-UHFFFAOYSA-N
CAS Registry Number: 123-38-6
Chemical structure:
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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

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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
Δ_fH°_gas	-188.7 ± 0.75	kJ/mol	Cm	Wiberg, Crocker, et al., 1991	Heat of hydrogenation; ALS
Δ_fH°_gas	-186.0 ± 1.5	kJ/mol	Eqk	Connett, 1972	At 473-524 K; ALS
Δ_fH°_gas	-190.6 ± 0.88	kJ/mol	Chyd	Buckley and Cox, 1967	ALS
Δ_fH°_gas	-192.	kJ/mol	Ccb	Tjebbes, 1962	ALS
Quantity	Value	Units	Method	Reference	Comment
S°_gas	304.4 ± 1.6	J/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

C_p,gas (J/mol*K)	Temperature (K)	Reference	Comment
77.50	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
80.73 ± 0.10	298.15
80.98	300.
96.39	400.
112.90	500.
128.50	600.
142.60	700.
155.20	800.
166.40	900.
176.30	1000.
185.10	1100.
192.90	1200.
199.80	1300.
206.10	1400.
211.70	1500.

Constant pressure heat capacity of gas

C_p,gas (J/mol*K)	Temperature (K)	Reference	Comment
84.53	325.04	Counsell J.F., 1972	GT
88.39	350.07
92.22	374.50

Ion clustering data

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Data compiled as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

(C₃H₇O^- • 4294967295 Propanal ) + = C₃H₇O^-

By formula: (C₃H₇O^- • 4294967295C₃H₆O) + C₃H₆O = C₃H₇O^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	172. ± 9.2	kJ/mol	N/A	Bartmess, Scott, et al., 1979	gas phase; value altered from reference due to change in acidity scale; B

+ Propanal = ( • )

By formula: Mg⁺ + C₃H₆O = (Mg⁺ • C₃H₆O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	270. ± 20.	kJ/mol	ICR	Operti, Tews, et al., 1988	gas phase; switching reaction,Thermochemical ladder(Mg+)CH3OH; M

+ Propanal = ( • )

By formula: NO^- + C₃H₆O = (NO^- • C₃H₆O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	159.	kJ/mol	ICR	Reents and Freiser, 1981	gas phase; switching reaction,Thermochemical ladder(NO+)C2H5OH, Entropy change calculated or estimated; Farid and McMahon, 1978, ref. to PA(NH3)=872. kJ/mol; M

References

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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, Trans. Faraday Soc., 1967, 63, 895-901. [all data]

Tjebbes, 1962
Tjebbes, J., Heats of combustion of propanal and 2-methyl propanal, Acta Chem. Scand., 1962, 16, 953-857. [all data]

Buckley E., 1967
Buckley E., Chemical equilibria. Part 2. Dehydrogenation of propanol and butanol, Trans. Faraday Soc., 1967, 63, 895-901. [all data]

Chao J., 1986
Chao J., Thermodynamic properties of key organic oxygen compounds in the carbon range C1 to C4. Part 2. Ideal gas properties, J. Phys. Chem. Ref. Data, 1986, 15, 1369-1436. [all data]

Frankiss S.G., 1974
Frankiss S.G., Thermodynamic properties of organic oxygen compounds. Part 36. Chemical thermodynamic properties of propanal, J. Chem. Soc. Faraday Trans. 2, 1974, 70, 1516-1521. [all data]

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, Pet. Refin., 1961, 40, 181-184. [all data]

Vasilev I.A., 1966
Vasilev I.A., 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, J. Chem. Thermodyn., 1972, 4, 915-917. [all data]

Bartmess, Scott, et al., 1979
Bartmess, J.E.; Scott, J.A.; McIver, R.T., Jr., The gas phase acidity scale from methanol to phenol, J. Am. Chem. Soc., 1979, 101, 6047. [all data]

Operti, Tews, et al., 1988
Operti, L.; Tews, E.C.; Freiser, B.S., Determination of Gas-Phase Ligand Binding Energies to Mg+ by FTMS Techniques, J. Am. Chem. Soc., 1988, 110, 12, 3847, https://doi.org/10.1021/ja00220a020 . [all data]

Reents and Freiser, 1981
Reents, W.D.; Freiser, B.S., Gas-Phase Binding Energies and Spectroscopic Properties of NO+ Charge-Transfer Complexes, J. Am. Chem. Soc., 1981, 103, 2791. [all data]

Farid and McMahon, 1978
Farid, R.; McMahon, T.B., Gas-Phase Ion-Molecule Reactions of Alkyl Nitrites by Ion Cyclotron Resonance Spectroscopy, Int. J. Mass Spectrom. Ion Phys., 1978, 27, 2, 163, https://doi.org/10.1016/0020-7381(78)80037-0 . [all data]

Notes

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Symbols used in this document:

C_p,gas	Constant pressure heat capacity of gas
S°_gas	Entropy of gas at standard conditions
Δ_fH°_gas	Enthalpy of formation of gas at standard conditions
Δ_rH°	Enthalpy of reaction at standard conditions

Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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