Dimethylamine
- Formula: C2H7N
- Molecular weight: 45.0837
- IUPAC Standard InChI: InChI=1S/C2H7N/c1-3-2/h3H,1-2H3
- IUPAC Standard InChIKey: ROSDSFDQCJNGOL-UHFFFAOYSA-N
- CAS Registry Number: 124-40-3
- 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: Methanamine, N-methyl-; (CH3)2NH; N-Methylmethanamine; Rcra waste number U092; UN 1032; N,N-Dimethylamine; NSC 8650
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), 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 | -4.7 ± 0.5 | kcal/mol | Eqk | Issoire and Long, 1960 | Heat of formation derived by Cox and Pilcher, 1970; ALS |
| ΔfH°gas | -5.69 | kcal/mol | N/A | Lemoult, 1907 | Value computed using ΔfHliquid° value of -49.8 kj/mol from Lemoult, 1907 and ΔvapH° value of 26.0 kj/mol from Issoire and Long, 1960.; DRB |
Condensed phase thermochemistry 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:
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 | -10.7 ± 0.5 | kcal/mol | Eqk | Issoire and Long, 1960 | Heat of formation derived by Cox and Pilcher, 1970; ALS |
| ΔfH°liquid | -11.9 | kcal/mol | Ccb | Lemoult, 1907 | ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°liquid | -428.2 | kcal/mol | Ccb | Muller, 1910 | At 288 K; ALS |
| ΔcH°liquid | -418.2 | kcal/mol | Ccb | Lemoult, 1907 | ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| S°liquid | 41.551 | cal/mol*K | N/A | Aston, Eidinoff, et al., 1939 | Saturated liquid at boiling point.; DH |
Constant pressure heat capacity of liquid
| Cp,liquid (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 32.689 | 280.44 | Aston, Eidinoff, et al., 1939 | T = 14 to 280 K. Value for saturated liquid.; DH |
IR Spectrum
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Data compiled by: Coblentz Society, Inc.
- GAS (16 mmHg DILUTED TO A TOTAL PRESSURE OF 600 mmHg WITH N2); BECKMAN; DIGITIZED BY NIST FROM HARD COPY (FROM TWO SEGMENTS); 4 cm-1 resolution
- GAS (16 mmHg, N2 ADDED, TOTAL PRESSURE 600 mmHg); BECKMAN IR-9 (GRATING); DIGITIZED BY NIST FROM HARD COPY (FROM TWO SEGMENTS); 2 cm-1 resolution
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Mass spectrum (electron ionization)
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry 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: 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 | NIST Mass Spectrometry Data Center, 1998. |
| NIST MS number | 291481 |
Gas Chromatography
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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: 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 | Apiezon L | 100. | 405. | Golovnya, Zhuravleva, et al., 1980 | N2, Chromosorb GAW; Column length: 2.7 m |
| Packed | Apiezon L | 100. | 434. | Golovnya and Zhuravleva, 1973 | |
| Packed | Apiezon L | 130. | 458. | Landault and Guiochon, 1964 | Teflon-Haloport; Column length: 2.26 m |
Kovats' RI, polar column, isothermal
| Column type | Active phase | Temperature (C) | I | Reference | Comment |
|---|---|---|---|---|---|
| Packed | PEG-2000 | 152. | 650. | Anderson, Jurel, et al., 1973 | He, Celite 545 (44-60 mesh); Column length: 3. m |
| Packed | PEG-2000 | 179. | 646. | Anderson, Jurel, et al., 1973 | He, Celite 545 (44-60 mesh); Column length: 3. m |
Van Den Dool and Kratz RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | DB-5 | 426. | Flamini, Luigi Cioni, et al., 2003 | 30. m/0.25 mm/0.25 μm, He, 3. K/min; Tstart: 60. C; Tend: 240. C |
Normal alkane RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | OV-101 | 425. | 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 | Methyl Silicone | 434. | Chen and Feng, 2007 | Program: not specified |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Issoire and Long, 1960
Issoire, J.; Long, C.,
Etude de la thermodynamique chimique de la reaction de formation des methylamines,
Bull. Soc. Chim. France, 1960, 2004-2012. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [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]
Muller, 1910
Muller, J.-A.,
Sur les chaleurs de combustion et les poids specifiques des methylamines,
Ann. Chim. Phys., 1910, 20, 116-130. [all data]
Aston, Eidinoff, et al., 1939
Aston, J.G.; Eidinoff, M.L.; Forster, W.S.,
The heat capacity and entropy, heats of fusion and vaporization and the vapor pressure of dimethylamine,
J. Am. Chem. Soc., 1939, 61, 1539-1543. [all data]
Golovnya, Zhuravleva, et al., 1980
Golovnya, R.V.; Zhuravleva, N.L.; Svetlova, N.I.; Grigor'eva, D.N.,
Gas-chromatographic separation of secondary normal alphatic amines,
J. Anal. Chem. USSR (Engl. Transl.), 1980, 35, 10, 1280-1285. [all data]
Golovnya and Zhuravleva, 1973
Golovnya, R.V.; Zhuravleva, I.L.,
Gas Chromatographic Method of Identification of n-Aliphatic Amines Through the Use of Donor-Acceptor Interaction with Phosphate,
Chromatographia, 1973, 6, 12, 508-513, https://doi.org/10.1007/BF02269131
. [all data]
Landault and Guiochon, 1964
Landault, C.; Guiochon, G.,
Separation des amines par chromatographie gaz-liquide en utilisant le teflon comme support,
J. Chromatogr., 1964, 13, 327-336, https://doi.org/10.1016/S0021-9673(01)95126-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]
Flamini, Luigi Cioni, et al., 2003
Flamini, G.; Luigi Cioni, P.; Morelli, I.,
Volatiles from leaves, fruits, and virgin oil from Olea europaea Cv. Olivastra Seggianese from Italy,
J. Agric. Food Chem., 2003, 51, 5, 1382-1386, https://doi.org/10.1021/jf020854y
. [all data]
Zenkevich, 2005
Zenkevich, I.G.,
Experimentally measured retention indices., 2005. [all data]
Chen and Feng, 2007
Chen, Y.; Feng, C.,
QSPR study on gas chromatography retention index of some organic pollutants,
Comput. Appl. Chem. (China), 2007, 24, 10, 1404-1408. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid S°liquid Entropy of liquid at standard conditions 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 - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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