2-Propanamine, 2-methyl-
- Formula: C4H11N
- Molecular weight: 73.1368
- IUPAC Standard InChIKey: YBRBMKDOPFTVDT-UHFFFAOYSA-N
- CAS Registry Number: 75-64-9
- 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: tert-Butylamine; Trimethylaminomethane; 1,1-Dimethylethylamine; 2-Amino-2-Methylpropane; 2-Aminoisobutane; 2-Methyl-2-aminopropane; 2-Methyl-2-propylamine; tert-C4H9NH2; 2-Methyl-2-propanamine; t-Butylamine; Butylamine, tert; Butylamine, tertiary; 1,1-Dimethylethanamine; 1-Amino-1,1-dimethylethane; Erbumine; NSC 9571
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Data at other public NIST sites:
- Options:
Data at NIST subscription sites:
NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.
Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, 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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -120. ± 0.8 | kJ/mol | Cm | Scott, 1971 | ALS |
ΔfH°gas | -120.9 ± 0.63 | kJ/mol | Ccr | Smith and Good, 1967 | ALS |
ΔfH°gas | -120.3 | kJ/mol | N/A | Evans, Fairbrother, et al., 1959 | Value computed using ΔfHliquid° value of -150.0±1.0 kj/mol from Evans, Fairbrother, et al., 1959 and ΔvapH° value of 29.7 kj/mol from Smith and Good, 1967.; DRB |
ΔfH°gas | -139.3 | kJ/mol | N/A | Lemoult, 1907 | Value computed using ΔfHliquid° value of -169.0 kj/mol from Lemoult, 1907 and ΔvapH° value of 29.7 kj/mol from Smith and Good, 1967.; DRB |
Condensed phase thermochemistry data
Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, 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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°liquid | -150.6 ± 0.50 | kJ/mol | Ccr | Smith and Good, 1967 | ALS |
ΔfH°liquid | -150. ± 1. | kJ/mol | Ccb | Evans, Fairbrother, et al., 1959 | ALS |
ΔfH°liquid | -169. | kJ/mol | Ccb | Lemoult, 1907 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -2995.5 ± 0.42 | kJ/mol | Ccr | Smith and Good, 1967 | ALS |
ΔcH°liquid | -2995.8 ± 1.1 | kJ/mol | Ccb | Evans, Fairbrother, et al., 1959 | ALS |
ΔcH°liquid | -2997. | kJ/mol | Ccb | Lemoult, 1907 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
S°liquid | 233.63 | J/mol*K | N/A | Finke, Messerly, et al., 1972 | DH |
Constant pressure heat capacity of liquid
Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
191.71 | 298.15 | Finke, Messerly, et al., 1972 | T = 12 to 350 K.; DH |
190. | 298.15 | Konicek and Wadso, 1971 | DH |
192.0 | 298.15 | Smith and Good, 1967 | DH |
Phase change data
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, 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 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 | 318. ± 2. | K | AVG | N/A | Average of 12 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 205.65 | K | N/A | Timmermans and Mattaar, 1921 | Uncertainty assigned by TRC = 1.5 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 206.19 | K | N/A | Finke, Messerly, et al., 1972, 2 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.01 K; second-order transition; TRC |
Ttriple | 206.21 | K | N/A | Anonymous, 1964 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.05 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 483.9 | K | N/A | Kobe and Mathews, 1970 | Uncertainty assigned by TRC = 0.5 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 38.40 | bar | N/A | Kobe and Mathews, 1970 | Uncertainty assigned by TRC = 0.5066 bar; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ρc | 3.42 | mol/l | N/A | Kobe and Mathews, 1970 | Uncertainty assigned by TRC = 0.27 mol/l; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 29.8 ± 0.6 | kJ/mol | AVG | N/A | Average of 6 values; Individual data points |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
28.27 | 317.2 | N/A | Majer and Svoboda, 1985 | |
30.1 | 307. | A,EB,IP | Stephenson and Malanowski, 1987 | Based on data from 292. to 349. K. See also Osborn and Douslin, 1968.; 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 |
---|---|---|---|---|
292.47 to 348.36 | 3.90694 | 992.719 | -62.727 | Osborn and Douslin, 1968 |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
0.88 | 206.2 | Domalski and Hearing, 1996 | AC |
Enthalpy of phase transition
ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
0.11351 | 91.30 | crystaline, III | crystaline, II | Finke, Messerly, et al., 1972 | DH |
6.0526 | 202.27 | crystaline, II | crystaline, I | Finke, Messerly, et al., 1972 | DH |
0.8820 | 206.19 | crystaline, I | liquid | Finke, Messerly, et al., 1972 | DH |
Entropy of phase transition
ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
1.24 | 91.30 | crystaline, III | crystaline, II | Finke, Messerly, et al., 1972 | DH |
29.91 | 202.27 | crystaline, II | crystaline, I | Finke, Messerly, et al., 1972 | DH |
4.28 | 206.19 | crystaline, I | liquid | Finke, Messerly, et al., 1972 | DH |
Reaction thermochemistry data
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, 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: 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. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
By formula: C3H9Si+ + C4H11N = (C3H9Si+ • C4H11N)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 243. | kJ/mol | PHPMS | Li and Stone, 1990 | gas phase; switching reaction,Thermochemical ladder((CH3)3Si+)C6H5COOC2H5; Wojtyniak and Stone, 1986 |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 174. | J/mol*K | PHPMS | Li and Stone, 1990 | gas phase; switching reaction,Thermochemical ladder((CH3)3Si+)C6H5COOC2H5; Wojtyniak and Stone, 1986 |
Gas Chromatography
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry 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
Kovats' RI, non-polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Packed | OV-101 | 130. | 501. | Osmialowski, Halkiewicz, et al., 1985 | Ar, Chromosorb W HP; Column length: 1. m |
Packed | PMS-100 | 130. | 438. | Anderson, Jurel, et al., 1973 | He, Celite 545 (44-60 mesh); Column length: 3. m |
Packed | PMS-100 | 150. | 435. | Anderson, Jurel, et al., 1973 | He, Celite 545 (44-60 mesh); Column length: 3. m |
Packed | PMS-100 | 180. | 432. | Anderson, Jurel, et al., 1973 | He, Celite 545 (44-60 mesh); Column length: 3. m |
Packed | Squalane | 50. | 484. | Vernon, 1971 | N2 |
Kovats' RI, polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Packed | PEG-2000 | 120. | 716. | Anderson, Jurel, et al., 1973 | He, Celite 545 (44-60 mesh); Column length: 3. m |
Packed | PEG-2000 | 150. | 712. | 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. | 715. | Anderson, Jurel, et al., 1973 | He, Celite 545 (44-60 mesh); Column length: 3. m |
Packed | PEG-2000 | 180. | 712. | 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. | 501. | Qi, Yang, et al., 2000 | |
Packed | Squalane | 100. | 480. | Vernon, 1971 | N2 |
Normal alkane RI, polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | DB-Wax | 729. | Peng, Yang, et al., 1991 | Program: not specified |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, 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]
Evans, Fairbrother, et al., 1959
Evans, F.W.; Fairbrother, D.M.; Skinner, H.A.,
The heats of combustion of organic compounds of nitrogen Part 3.-Butylamines, and the cis-dimer of nitrosoisobutane,
Trans. Faraday Soc., 1959, 55, 399-403. [all data]
Lemoult, 1907
Lemoult, M.P.,
Recherches theoriques et experimentales sur les chaleurs de combustion et de formation des composes organiques,
Ann. Chim. Phys., 1907, 12, 395-432. [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. Thermodynam., 1972, 4, 359-374. [all data]
Konicek and Wadso, 1971
Konicek, J.; Wadso, I.,
Thermochemical properties of some carboxylic acids, amines and N-substituted amides in aqueous solution,
Acta Chem. Scand., 1971, 25, 1541-1551. [all data]
Timmermans and Mattaar, 1921
Timmermans, J.; Mattaar, J.F.,
Freezing points of orgainic substances VI. New experimental determinations.,
Bull. Soc. Chim. Belg., 1921, 30, 213. [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. Thermodyn., 1972, 4, 359. [all data]
Anonymous, 1964
Anonymous, R.,
, Natl. Bur. Stand. (U. S.), Tech. News Bull. 48, 1964. [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 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]
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]
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]
Li and Stone, 1990
Li, X.; Stone, A.J.,
Gas-Phase (CH3)3Si+ Affinities of Alkylamines and Proton Affinities of Trimethylsilyl Alkylamines,
Int. J. Mass Spectrom. Ion Proc., 1990, 101, 2-3, 149, https://doi.org/10.1016/0168-1176(90)87008-5
. [all data]
Wojtyniak and Stone, 1986
Wojtyniak, A.C.M.; Stone, A.J.,
A High-Pressure Mass Spectrometric Study of the Bonding of Trimethylsilylium to Oxygen and Aromatic Bases,
Can. J. Chem., 1986, 74, 59. [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]
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]
Vernon, 1971
Vernon, F.,
An investigation into hydrogen bonding in gas-liquid chromatography,
J. Chromatogr., 1971, 63, 249-257, https://doi.org/10.1016/S0021-9673(01)85637-5
. [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]
Peng, Yang, et al., 1991
Peng, C.T.; Yang, Z.C.; Ding, S.F.,
Prediction of rentention idexes. II. Structure-retention index relationship on polar columns,
J. Chromatogr., 1991, 586, 1, 85-112, https://doi.org/10.1016/0021-9673(91)80028-F
. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas Chromatography, 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 ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔfusH Enthalpy of fusion 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
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.