2-Propanamine
- Formula: C3H9N
- Molecular weight: 59.1103
- IUPAC Standard InChIKey: JJWLVOIRVHMVIS-UHFFFAOYSA-N
- CAS Registry Number: 75-31-0
- 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: Isopropylamine; sec-Propylamine; Monoisopropylamine; 1-Methylethylamine; 2-Aminopropane; 2-Propylamine; iso-C3H7NH2; Isopropilamina; Propane, 2-amino-; 2-Amino-propaan; 2-Amino-propano; 2-Aminopropan; UN 1221; iso-Propylamine gas; NSC 62775
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Gas phase thermochemistry data
Go To: Top, Phase change data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Gas Chromatography, 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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -20.0 ± 0.2 | kcal/mol | Cm | Scott, 1971 | |
ΔfH°gas | -20.02 ± 0.19 | kcal/mol | Ccr | Smith and Good, 1967 |
Phase change data
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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 | 306. ± 2. | K | AVG | N/A | Average of 9 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 171.95 | K | N/A | Timmermans, 1921 | Uncertainty assigned by TRC = 0.6 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 178.01 | K | N/A | Finke, Messerly, et al., 1972 | Uncertainty assigned by TRC = 0.007 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 471.8 | K | N/A | Majer and Svoboda, 1985 | |
Tc | 471.9 | K | N/A | Kobe and Mathews, 1970 | Uncertainty assigned by TRC = 0.5 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 44.81 | atm | N/A | Kobe and Mathews, 1970 | Uncertainty assigned by TRC = 0.5000 atm; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ρc | 4.53 | mol/l | N/A | Kobe and Mathews, 1970 | Uncertainty assigned by TRC = 0.00009 mol/l; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 6.862 | kcal/mol | N/A | Majer and Svoboda, 1985 | |
ΔvapH° | 6.79 | kcal/mol | N/A | Majer, Svoboda, et al., 1979 | AC |
ΔvapH° | 6.81 ± 0.05 | kcal/mol | V | Smith and Good, 1967 | ALS |
ΔvapH° | 6.81 | kcal/mol | N/A | Smith and Good, 1967 | DRB |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
6.652 | 304.9 | N/A | Majer and Svoboda, 1985 | |
7.10 | 292. | A,EB,IP | Stephenson and Malanowski, 1987 | Based on data from 277. to 334. K. See also Osborn and Douslin, 1968 and Dykyj, 1970.; AC |
6.50 | 313. | N/A | Majer, Svoboda, et al., 1979 | 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 |
---|---|---|---|---|---|
298. to 313. | 11.90 | 0.345 | 471.8 | Majer and Svoboda, 1985 |
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 |
---|---|---|---|---|
277.07 to 334.13 | 4.00936 | 985.65 | -59.079 | Osborn and Douslin, 1968 |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
1.7506 | 177.99 | Finke, Messerly, et al., 1972, 2 | DH |
1.75 | 178. | Acree, 1991 | AC |
Entropy of fusion
ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
9.835 | 177.99 | Finke, Messerly, et al., 1972, 2 | DH |
Gas phase ion energetics data
Go To: Top, Gas phase thermochemistry data, Phase change data, Ion clustering data, IR Spectrum, Gas Chromatography, 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
Data compiled as indicated in comments:
B - John E. Bartmess
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Proton affinity (review) | 220.8 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 212.5 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.6 ± 0.1 | PE | Aue, Webb, et al., 1976 | LLK |
8.86 | PE | Al-Joboury and Turner, 1964 | RDSH |
8.72 ± 0.03 | PI | Watanabe and Mottl, 1957 | RDSH |
9.31 | PE | Katsumata, Iwai, et al., 1973 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C2H6N+ | 9.12 | CH3 | EI | Lossing, Lam, et al., 1981 | LLK |
C2H6N+ | 8.86 ± 0.05 | CH3 | EI | Solka and Russell, 1974 | LLK |
C3H8N+ | 9.20 | H | EI | Lossing, Lam, et al., 1981 | LLK |
De-protonation reactions
C3H8N- + =
By formula: C3H8N- + H+ = C3H9N
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 397.2 ± 3.1 | kcal/mol | G+TS | Brauman and Blair, 1971 | gas phase; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 389.9 ± 3.0 | kcal/mol | IMRB | Brauman and Blair, 1971 | gas phase; B |
Ion clustering data
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: 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
(C3H210N+ • ) + = (C3H210N+ • 2)
By formula: (C3H210N+ • C3H9N) + C3H9N = (C3H210N+ • 2C3H9N)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 19.8 | kcal/mol | HPMS | Zielinska and Wincel, 1974 | gas phase; Entropy change is questionable |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 42.6 | cal/mol*K | HPMS | Zielinska and Wincel, 1974 | gas phase; Entropy change is questionable |
(C3H210N+ • 2) + = (C3H210N+ • 3)
By formula: (C3H210N+ • 2C3H9N) + C3H9N = (C3H210N+ • 3C3H9N)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 16.2 | kcal/mol | HPMS | Zielinska and Wincel, 1974 | gas phase; Entropy change is questionable |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 39.3 | cal/mol*K | HPMS | Zielinska and Wincel, 1974 | gas phase; Entropy change is questionable |
IR Spectrum
Go To: Top, Gas phase thermochemistry data, Phase change data, Gas phase ion energetics data, Ion clustering data, Gas Chromatography, References, Notes
Data compiled by: Coblentz Society, Inc.
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Gas Chromatography
Go To: Top, Gas phase thermochemistry data, Phase change data, Gas phase ion energetics data, Ion clustering 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
Kovats' RI, non-polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Packed | OV-101 | 130. | 469. | Osmialowski, Halkiewicz, et al., 1985 | Ar, Chromosorb W HP; Column length: 1. m |
Packed | SE-30 | 180. | 468. | Oszczapowicz, Osek, et al., 1984 | N2, Chromosorb W AW; Column length: 3. m |
Packed | Apiezon L | 100. | 477. | Zhuravleva, Kapustin, et al., 1976 | N2 or He, Chromosorb G, AW; Column length: 2.7 m |
Kovats' RI, polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Packed | PEG-2000 | 120. | 743. | Anderson, Jurel, et al., 1973 | He, Celite 545 (44-60 mesh); Column length: 3. m |
Packed | PEG-2000 | 150. | 740. | Anderson, Jurel, et al., 1973 | He, Celite 545 (44-60 mesh); Column length: 3. m |
Packed | PEG-2000 | 152. | 725. | Anderson, Jurel, et al., 1973 | He, Celite 545 (44-60 mesh); Column length: 3. m |
Packed | PEG-2000 | 179. | 710. | Anderson, Jurel, et al., 1973 | He, Celite 545 (44-60 mesh); Column length: 3. m |
Packed | PEG-2000 | 180. | 740. | Anderson, Jurel, et al., 1973 | He, Celite 545 (44-60 mesh); Column length: 3. m |
Normal alkane RI, non-polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Capillary | OV-101 | 130. | 469. | Qi, Yang, et al., 2000 |
Normal alkane RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | OV-101 | 465. | Zenkevich, 2005 | 25. m/0.20 mm/0.10 μm, N2/He, 6. K/min; Tstart: 50. C; Tend: 250. C |
Normal alkane RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Polydimethyl siloxanes | 465. | Zenkevich and Chupalov, 1996 | Program: not specified |
References
Go To: Top, Gas phase thermochemistry data, Phase change data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Scott, 1971
Scott, D.W.,
1-Aminopropane, 2-aminopropane, and 2-methyl-2-aminopropane. Vibrational assignments, conformational analyses, and chemical thermodynamic properties,
J. Chem. Thermodyn., 1971, 3, 843-852. [all data]
Smith and Good, 1967
Smith, N.K.; Good, W.D.,
Enthalpies of combustion and formation of propylamine, isopropylamine, and tert-butylamine,
J. Chem. Eng. Data, 1967, 12, 572-574. [all data]
Timmermans, 1921
Timmermans, J.,
The Freezing Points of Organic Substances IV. New Exp. Determinations,
Bull. Soc. Chim. Belg., 1921, 30, 62. [all data]
Finke, Messerly, et al., 1972
Finke, H.L.; Messerly, J.F.; Todd, S.S.,
Thermodynamic properties of acrylonitrile, 1-aminopropane, 2-aminopropane, and 2-methyl-2-aminopropane,
J. Chem. Thermodyn., 1972, 4, 359. [all data]
Majer and Svoboda, 1985
Majer, V.; Svoboda, V.,
Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation, Blackwell Scientific Publications, Oxford, 1985, 300. [all data]
Kobe and Mathews, 1970
Kobe, K.A.; Mathews, J.F.,
Critical Properties and Vapor Pressures of Some Organic Nitrogen and Oxygen Compounds,
J. Chem. Eng. Data, 1970, 15, 182. [all data]
Majer, Svoboda, et al., 1979
Majer, Vladimír; Svoboda, Václav; Koubek, Josef; Pick, Jirí,
Temperature dependence of heats of vaporization, saturated vapour pressures and cohesive energies for a group of amines,
Collect. Czech. Chem. Commun., 1979, 44, 12, 3521-3528, https://doi.org/10.1135/cccc19793521
. [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]
Osborn and Douslin, 1968
Osborn, Ann G.; Douslin, Donald R.,
Vapor pressure relations of 13 nitrogen compounds related to petroleum,
J. Chem. Eng. Data, 1968, 13, 4, 534-537, https://doi.org/10.1021/je60039a024
. [all data]
Dykyj, 1970
Dykyj, J.,
Petrochemica, 1970, 10, 2, 51. [all data]
Finke, Messerly, et al., 1972, 2
Finke, H.L.; Messerly, J.F.; Todd, S.S.,
Thermodynamic properties of acrylonitrile, 1-aminopropane, 2-aminopropane, and 2-methyl-2-aminopropane,
J. Chem. Thermodynam., 1972, 4, 359-374. [all data]
Acree, 1991
Acree, William E.,
Thermodynamic properties of organic compounds: enthalpy of fusion and melting point temperature compilation,
Thermochimica Acta, 1991, 189, 1, 37-56, https://doi.org/10.1016/0040-6031(91)87098-H
. [all data]
Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G.,
Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update,
J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018
. [all data]
Aue, Webb, et al., 1976
Aue, D.H.; Webb, H.M.; Bowers, M.T.,
Quantitative proton affinities, ionization potentials, and hydrogen affinities of alkylamines,
J. Am. Chem. Soc., 1976, 98, 311. [all data]
Al-Joboury and Turner, 1964
Al-Joboury, M.I.; Turner, D.W.,
Molecular photoelectron spectroscopy. Part II. A summary of ionization potentials,
J. Chem. Soc., 1964, 4434. [all data]
Watanabe and Mottl, 1957
Watanabe, K.; Mottl, J.R.,
Ionization potentials of ammonia and some amines,
J. Chem. Phys., 1957, 26, 1773. [all data]
Katsumata, Iwai, et al., 1973
Katsumata, S.; Iwai, T.; Kimura, K.,
Photoelectron spectra and sum rule consideration. Higher alkyl amines and alcohols,
Bull. Chem. Soc. Jpn., 1973, 46, 3391. [all data]
Lossing, Lam, et al., 1981
Lossing, F.P.; Lam, Y.-T.; Maccoll, A.,
Gas phase heats of formation of alkyl immonium ions,
Can. J. Chem., 1981, 59, 2228. [all data]
Solka and Russell, 1974
Solka, B.H.; Russell, M.E.,
Energetics of formation of some structural isomers of gaseous C2H5O+ C2H6N+ ions,
J. Phys. Chem., 1974, 78, 1268. [all data]
Brauman and Blair, 1971
Brauman, J.I.; Blair, L.K.,
Gas phase acidities of amines,
J. Am. Chem. Soc., 1971, 93, 3911. [all data]
Zielinska and Wincel, 1974
Zielinska, T.J.; Wincel, H.,
Gas - Phase Solvation of Protonated Aliphatic Amines: Methyl, Ethyl, n - Propyl, and Iso - Propylamine,
Chem. Phys. Lett., 1974, 25, 354. [all data]
Osmialowski, Halkiewicz, et al., 1985
Osmialowski, K.; Halkiewicz, J.; Radecki, A.; Kaliszan, R.,
Quantum chemical parameters in correlation analysis of gas-liquid chromatographic retention indices of amines,
J. Chromatogr., 1985, 346, 53-60, https://doi.org/10.1016/S0021-9673(00)90493-X
. [all data]
Oszczapowicz, Osek, et al., 1984
Oszczapowicz, J.; Osek, J.; Dolecka, E.,
Retention indices of dimethylformamidines, dimethylacetamidines and tetramethylguanidines on a non-polar column,
J. Chromatogr., 1984, 315, 95-100, https://doi.org/10.1016/S0021-9673(01)90727-7
. [all data]
Zhuravleva, Kapustin, et al., 1976
Zhuravleva, I.L.; Kapustin, Yu.P.; Golovnya, P.B.,
Retention indices of some isoaliphatic and heterocyclic nitrogenous bases,
Zh. Anal. Khim., 1976, 31, 1378-1380. [all data]
Anderson, Jurel, et al., 1973
Anderson, A.; Jurel, S.; Shymanska, M.; Golender, L.,
Gas-liquid chromatography of some aliphatic and heterocyclic mono- and pollyfunctional amines. VII. Retention indices of amines in some polar and unpolar stationary phases,
Latv. PSR Zinat. Akad. Vestis Kim. Ser., 1973, 1, 51-63. [all data]
Qi, Yang, et al., 2000
Qi, Y.; Yang, J.; Xu, L.,
correlation analysis of the structures and gas liquid chromatographic retention indices of amines,
Chin. J. Anal. Chem., 2000, 28, 2, 223-227. [all data]
Zenkevich, 2005
Zenkevich, I.G.,
Experimentally measured retention indices., 2005. [all data]
Zenkevich and Chupalov, 1996
Zenkevich, I.G.; Chupalov, A.A.,
New Possibilities of Chromato Mass Pectrometric Identification of Organic Compounds Using Increments of Gas Chromatographic Retention Indices of Molecular Structural Fragments,
Zh. Org. Khim. (Rus.), 1996, 32, 5, 656-666. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Phase change data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Gas Chromatography, References
- Symbols used in this document:
AE Appearance energy Pc Critical pressure 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 ΔfusS Entropy of fusion ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔrS° Entropy 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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