2,6-Xylidine
- Formula: C8H11N
- Molecular weight: 121.1796
- IUPAC Standard InChIKey: UFFBMTHBGFGIHF-UHFFFAOYSA-N
- CAS Registry Number: 87-62-7
- 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: Benzenamine, 2,6-dimethyl-; 1-Amino-2,6-dimethylbenzene; 2-Amino-m-xylene; 2-Amino-1,3-dimethylbenzene; 2-Amino-1,3-xylene; 2,6-Dimethylaniline; 2,6-Dimethylbenzenamine; o-Xylidine; Aniline, 2,6-dimethyl-; NCI-C56188; 2,6-Xylylamine; 2,6-Dimethylphenylamine; NSC 7098
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Condensed phase thermochemistry data
Go To: Top, Phase change data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible 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: Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
S°liquid | 60.074 | cal/mol*K | N/A | Steele, Chirico, et al., 1986 |
Constant pressure heat capacity of liquid
Cp,liquid (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
57.089 | 298.15 | Steele, Chirico, et al., 1986 | T = 10 to 450 K. |
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
DH - Eugene S. Domalski and Elizabeth D. Hearing
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 | 487. to 489. | K | N/A | Frinton Laboratories Inc., 1986 | BS |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 284.598 | K | N/A | Steele, Chirico, et al., 1986 | DH |
Tfus | 284.16 | K | N/A | Schwartzman and Corson, 1954 | Uncertainty assigned by TRC = 0.3 K; TRC |
Tfus | 284.4 | K | N/A | Birch, Dean, et al., 1949 | Uncertainty assigned by TRC = 1. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 14.2 ± 0.07 | kcal/mol | N/A | Verevkin, 2000 | AC |
Reduced pressure boiling point
Tboil (K) | Pressure (atm) | Reference | Comment |
---|---|---|---|
487.2 | 0.972 | Weast and Grasselli, 1989 | BS |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
14.1 ± 0.07 | 306. | N/A | Verevkin, 2000 | Based on data from 286. to 326. K.; AC |
11.6 | 388. | A | Stephenson and Malanowski, 1987 | Based on data from 373. to 490. K.; AC |
12.1 | 332. | N/A | Stull, 1947 | Based on data from 317. to 491. K.; AC |
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 | Comment |
---|---|---|---|---|---|
317. to 491.1 | 4.69480 | 2157.756 | -32.151 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
Gas phase ion energetics data
Go To: Top, Condensed phase thermochemistry data, Phase change data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible 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
L - Sharon G. Lias
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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 7.33 ± 0.05 | eV | N/A | N/A | L |
Quantity | Value | Units | Method | Reference | Comment |
Proton affinity (review) | 215.5 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 207.9 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
7.30 ± 0.02 | PE | Maier and Turner, 1973 | LLK |
7.36 | PE | Cowling and Johnstone, 1973 | LLK |
7.5 ± 0.1 | CTS | Farrell and Newton, 1966 | RDSH |
7.78 ± 0.05 | PE | Szepes, Distefano, et al., 1974 | Vertical value; LLK |
IR Spectrum
Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), UV/Visible spectrum, Gas Chromatography, References, Notes
Data compiled by: Coblentz Society, Inc.
- LIQUID (NEAT); BECKMAN IR-4 (HYBRID PRISM-GRATING); DIGITIZED BY COBLENTZ SOCIETY (BATCH I) FROM HARD COPY (ADJUSTED 0.035-0.03-0); 2 cm-1 resolution
- SOLUTION (10% IN CCl4 FOR 5000-1350 CM-1, 10% IN CS2 FOR 1350-625 CM-1); Not specified, most likely a prism, grating, or hybrid spectrometer.; DIGITIZED BY NIST FROM HARD COPY; 4 cm-1 resolution
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Mass spectrum (electron ionization)
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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
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 | 291467 |
UV/Visible spectrum
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Spectrum
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Additional Data
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Source | Lang (editor), 1968 |
---|---|
Owner | INEP CP RAS, NIST OSRD Collection (C) 2007 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
Origin | INSTITUTE OF ENERGY PROBLEMS OF CHEMICAL PHYSICS, RAS |
Source reference | RAS UV No. 19112 |
Instrument | Spektromom 201 |
Melting point | 216.9 |
Gas Chromatography
Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible 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 |
---|---|---|---|---|---|
Capillary | SPB-1 | 100. | 1135.52 | Berezkin, Korolev, et al., 2000 | 30. m/0.25 mm/0.25 μm, He |
Capillary | DB-1 | 100. | 1136.26 | Berezkin, Korolev, et al., 2000 | 30. m/0.25 mm/0.25 μm, He |
Capillary | ZB-1 | 100. | 1137.15 | Berezkin, Korolev, et al., 2000 | 30. m/0.25 mm/0.25 μm, He |
Capillary | BP-1 | 100. | 1136.34 | Berezkin, Korolev, et al., 2000 | 30. m/0.25 mm/0.25 μm, He |
Capillary | SE-30 | 100. | 1137.93 | Malyukova, Berezkin, et al., 1997 | 30. m/0.25 mm/0.25 μm, He |
Capillary | SE-30 | 100. | 1143.41 | Malyukova, Berezkin, et al., 1997 | 30. m/0.25 mm/0.25 μm, SF6 |
Capillary | SE-33 | 120. | 1179. | Juvancz, Cserháti, et al., 1994 | 10. m/0.20 mm/0.15 μm, H2 |
Capillary | OV-101 | 110. | 1140.7 | Farkas, Sojak, et al., 1989 | 14. m/0.325 mm/0.305 μm, H2 |
Kovats' RI, polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Capillary | Carbowax 20M | 130. | 1940. | Hedin, Thopson, et al., 1972 | N2; Column length: 15.24 m; Column diameter: 0.5 mm |
Van Den Dool and Kratz RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | OV-1 | 1136.2 | Gautzsch and Zinn, 1996 | 8. K/min; Tstart: 35. C; Tend: 300. C |
Capillary | DB-5 | 1167. | 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, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Capillary | SE-30 | 120. | 1149. | Berezkin, Korolev, et al., 1998 | 75. m/0.14 mm/0.30 μm, He |
Capillary | SE-30 | 90. | 1134. | Berezkin and Korolev, 1985 | Helium; Column length: 25. m; Column diameter: 0.32 mm |
Capillary | SE-30 | 90. | 1143. | Berezkin and Korolev, 1985 | Helium; Column length: 25. m; Column diameter: 0.32 mm |
Capillary | SE-30 | 90. | 1143. | Berezkin and Korolev, 1985 | Helium; Column length: 25. m; Column diameter: 0.32 mm |
Capillary | SE-30 | 90. | 1146. | Berezkin and Korolev, 1985 | Helium; Column length: 25. m; Column diameter: 0.32 mm |
Capillary | SE-30 | 90. | 1157. | Berezkin and Korolev, 1985 | Helium; Column length: 25. m; Column diameter: 0.32 mm |
Capillary | SE-30 | 90. | 1173. | Berezkin and Korolev, 1985 | Helium; Column length: 25. m; Column diameter: 0.32 mm |
Normal alkane RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | DB-5 | 1168.19 | Kim, Kim, et al., 1993 | 30. m/0.25 mm/0.241 μm, 60. C @ 2. min, 4. K/min; Tend: 160. C |
Capillary | Ultra-1 | 1131. | Okumura, 1991 | 25. m/0.32 mm/0.25 μm, He, 3. K/min; Tstart: 80. C; Tend: 260. C |
Normal alkane RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | OV-1 | 1130. | Waggott and Davies, 1984 | Hydrogen; Column length: 50. m; Column diameter: 0.32 mm; Program: not specified |
Lee's RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | DB-5 | 196.15 | 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, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Steele, Chirico, et al., 1986
Steele, W.V.; Chirico, R.D.; Collier, W.B.; Hossenlopp, I.A.; Nguyen, A.; Strube, M.M.,
Thermochemical and thermophysical properties of organic nitrogen compounds found in fossil materials,
NIPER Report, 1986, 188, 112p. [all data]
Frinton Laboratories Inc., 1986
Frinton Laboratories Inc.,
Catalog Number 11, Frinton Laboratories Inc., Vineland, NJ, 1986, 99. [all data]
Schwartzman and Corson, 1954
Schwartzman, L.H.; Corson, B.B.,
Steric Hinderance I. 2,6-Dimethylacetophenone and 2,6-Dimethylstyrene,
J. Am. Chem. Soc., 1954, 76, 781. [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, 2000
Verevkin, Sergey P.,
Thermochemical study of the ortho interactions in alkyl substituted anilines,
The Journal of Chemical Thermodynamics, 2000, 32, 2, 247-259, https://doi.org/10.1006/jcht.1999.0587
. [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]
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]
Stull, 1947
Stull, Daniel R.,
Vapor Pressure of Pure Substances. Organic and Inorganic Compounds,
Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022
. [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]
Maier and Turner, 1973
Maier, J.P.; Turner, D.W.,
Steric inhibition of resonance studied by molecular photoelectron spectroscopy Part 3. Anilines, Phenols and Related Compounds,
J. Chem. Soc. Faraday Trans. 2, 1973, 69, 521. [all data]
Cowling and Johnstone, 1973
Cowling, S.A.; Johnstone, R.A.W.,
Photoelectron spectroscopy: The effects of steric inhibition to resonance in anilines,
J. Electron Spectrosc. Relat. Phenom., 1973, 2, 161. [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]
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]
Lang (editor), 1968
Lang (editor), L.,
Absorption Spectra in the Ultraviolet and Visible Region, 1968, 10, 65. [all data]
Berezkin, Korolev, et al., 2000
Berezkin, V.G.; Korolev, A.A.; Malyukova, I.V.,
A comparative analysis of retention values obtained on fused silica capillary columns from various manufacturers,
Analusis, 2000, 28, 2, 132-135, https://doi.org/10.1051/analusis:2000105
. [all data]
Malyukova, Berezkin, et al., 1997
Malyukova, I.V.; Berezkin, V.G.; Kramers, K.; Jansen, H.G.,
Capillary chromatrography of hydrocarbons and their derivatives. Use of sulphur hexafluoride as the carrier gas,
Pet. Chem. USSR (Engl. Transl.), 1997, 37, 3, 265-272. [all data]
Juvancz, Cserháti, et al., 1994
Juvancz, Z.; Cserháti, T.; Markides, K.E.; Bradshaw, J.S.; Lee, M.L.,
Characterization of some new polysiloxane stationary phases by principal component analysis,
Chromatographia, 1994, 38, 3/4, 227-231, https://doi.org/10.1007/BF02290341
. [all data]
Farkas, Sojak, et al., 1989
Farkas, P.; Sojak, L.; Kovac, M.; Janak, J.,
Interface Adsorption and Reproducibility of Retention Indices in Glass Capillary Columns with Dimethylpolysiloxane Stationary Phases Cross-Linked by γ-Irradiation,
J. Chromatogr., 1989, 471, 251-261, https://doi.org/10.1016/S0021-9673(00)94173-6
. [all data]
Hedin, Thopson, et al., 1972
Hedin, P.A.; Thopson, A.C.; Gueldner, R.C.; Minyard, J.P.,
Volatile constituents of the boll weevil,
J. Insect. Physiol., 1972, 18, 1, 79-86, https://doi.org/10.1016/0022-1910(72)90066-2
. [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]
Berezkin, Korolev, et al., 1998
Berezkin, V.G.; Korolev, A.A.; Malyukova, I.V.,
Dependence of the relative retention of compounds on the average pressure of helium as a carrier gas in capillary GLC,
Russ. Chem. Bull. (Engl. Transl.), 1998, 47, 2, 307-309, https://doi.org/10.1007/BF02498955
. [all data]
Berezkin and Korolev, 1985
Berezkin, V.G.; Korolev, A.A.,
Investigation of the role of adsorption at the stationary phase interface in capillary columns with cross-linked phases,
Chromatographia, 1985, 20, 8, 482-486, https://doi.org/10.1007/BF02344790
. [all data]
Kim, Kim, et al., 1993
Kim, K.-R.; Kim, J.-H.; Park, H.-K.; Oh, C.-H.,
Dual capillary column system for the qualitative gas chromatography: 2. Comparison between splitless and on-column injection modes,
Bull. Korean Chem. Soc., 1993, 14, 2, 250-255. [all data]
Okumura, 1991
Okumura, T.,
retention indices of environmental chemicals on methyl silicone capillary column,
Journal of Environmental Chemistry (Japan), 1991, 1, 2, 333-358, https://doi.org/10.5985/jec.1.333
. [all data]
Waggott and Davies, 1984
Waggott, A.; Davies, I.W.,
Identification of organic pollutants using linear temperature programmed retention indices (LTPRIs) - Part II, 1984, retrieved from http://dwi.defra.gov.uk/research/completed-research/reports/dwi0383.pdf. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Gas Chromatography, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid IE (evaluated) Recommended ionization energy S°liquid Entropy of liquid at standard conditions Tboil Boiling point Tfus Fusion (melting) point ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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