Benzenamine, 2,5-dimethyl-
- Formula: C8H11N
- Molecular weight: 121.1796
- IUPAC Standard InChIKey: VOWZNBNDMFLQGM-UHFFFAOYSA-N
- CAS Registry Number: 95-78-3
- 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: 2,5-Xylidine; p-Xylidine; 1-Amino-2,5-dimethylbenzene; 2-Amino-1,4-xylene; 2,5-Dimethylaniline; 3-Amino-1,4-dimethylbenzene; 5-Amino-1,4-dimethylbenzene; 2,5-Dimethylbenzeneamine; Aniline, 2,5-dimethyl-; 2,5-Dimethylbenzenamine; 5-Methyl-o-toluidine; 6-Methyl-m-toluidine; 2,5-Dimethylphenylamine; 2-Amino-1,4-dimethylbenzene; NSC 7639
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Phase change data
Go To: Top, Gas phase ion energetics 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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 491.2 | K | N/A | Aldrich Chemical Company Inc., 1990 | BS |
Tboil | 487.2 | K | N/A | Weast and Grasselli, 1989 | BS |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 279. | K | N/A | Ahmed and Eades, 1972 | Crystal phase 1 phase; Uncertainty assigned by TRC = 1. K; TRC |
Tfus | 287.4 | K | N/A | Birch, Dean, et al., 1949 | Uncertainty assigned by TRC = 1. K; TRC |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
61.7 ± 0.7 | 317. | Verevkin, 1997 | Based on data from 295. to 339. K.; AC |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
13.7 | 279. | Ahmed and Eades, 1972 | AC |
Gas phase ion energetics data
Go To: Top, 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 as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
7.2 | PE | Szepes, Distefano, et al., 1974 | LLK |
7.5 ± 0.1 | CTS | Farrell and Newton, 1966 | RDSH |
7.78 ± 0.05 | PE | Szepes, Distefano, et al., 1974 | Vertical value; LLK |
Gas Chromatography
Go To: Top, 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
Van Den Dool and Kratz RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | OV-1 | 1142.8 | Gautzsch and Zinn, 1996 | 8. K/min; Tstart: 35. C; Tend: 300. C |
Capillary | DB-5 | 1171. | Rostad and Pereira, 1986 | 30. m/0.26 mm/0.25 μm, He, 50. C @ 4. min, 6. K/min, 300. C @ 20. min |
Normal alkane RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | SE-30 | 1142.3 | Bur'yan and Nabivach, 1992 | 1.7 K/min; Tstart: 82. C; Tend: 177. C |
Lee's RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | DB-5 | 196.94 | Rostad and Pereira, 1986 | 30. m/0.26 mm/0.25 μm, He, 50. C @ 4. min, 6. K/min, 300. C @ 20. min |
References
Go To: Top, Phase change data, Gas phase ion energetics data, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Aldrich Chemical Company Inc., 1990
Aldrich Chemical Company Inc.,
Catalog Handbook of Fine Chemicals, Aldrich Chemical Company, Inc., Milwaukee WI, 1990, 1. [all data]
Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]
Ahmed and Eades, 1972
Ahmed, A.M.I.; Eades, R.G.,
Proton relaxation in solid aniline and some methyl derivatives,
J. Chem. Soc., Faraday Trans. 2, 1972, 68, 2017, https://doi.org/10.1039/f29726802017
. [all data]
Birch, Dean, et al., 1949
Birch, S.F.; Dean, R.A.; Fidler, F.A.; Lowry, R.A.,
The preparation of the c(10) monocyclic aromatic hydrocarbons,
J. Am. Chem. Soc., 1949, 71, 1362. [all data]
Verevkin, 1997
Verevkin, Sergey P.,
Thermochemistry of amines: experimental standard molar enthalpies of formation of some aliphatic and aromatic amines,
The Journal of Chemical Thermodynamics, 1997, 29, 8, 891-899, https://doi.org/10.1006/jcht.1997.0212
. [all data]
Szepes, Distefano, et al., 1974
Szepes, L.; Distefano, G.; Pignataro, S.,
Steric inhibition of resonance in acetanilides by UV photoelectron spectroscopy,
Ann. Chim., 1974, 64, 159. [all data]
Farrell and Newton, 1966
Farrell, P.G.; Newton, J.,
Ionization potentials of primary aromatic amines and aza-hydrocarbons,
Tetrahedron Lett., 1966, 5517. [all data]
Gautzsch and Zinn, 1996
Gautzsch, R.; Zinn, P.,
Use of incremental models to estimate the retention indexes of aromatic compounds,
Chromatographia, 1996, 43, 3/4, 163-176, https://doi.org/10.1007/BF02292946
. [all data]
Rostad and Pereira, 1986
Rostad, C.E.; Pereira, W.E.,
Kovats and Lee retention indices determined by gas chromatography/mass spectrometry for organic compounds of environmental interest,
J. Hi. Res. Chromatogr. Chromatogr. Comm., 1986, 9, 6, 328-334, https://doi.org/10.1002/jhrc.1240090603
. [all data]
Bur'yan and Nabivach, 1992
Bur'yan, P.; Nabivach, V.M.,
Investigation of composition of higher heterocnitrogen bases of brown coal tar,
Coke Chem. (Engl. Transl.), 1992, 5, 29-33. [all data]
Notes
Go To: Top, Phase change data, Gas phase ion energetics data, Gas Chromatography, References
- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point ΔfusH Enthalpy of fusion ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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