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
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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: Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
S°liquid | 251.35 | J/mol*K | N/A | Steele, Chirico, et al., 1986 |
Constant pressure heat capacity of liquid
Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
238.86 | 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° | 59.6 ± 0.3 | kJ/mol | N/A | Verevkin, 2000 | AC |
Reduced pressure boiling point
Tboil (K) | Pressure (bar) | Reference | Comment |
---|---|---|---|
487.2 | 0.985 | Weast and Grasselli, 1989 | BS |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
59.2 ± 0.3 | 306. | N/A | Verevkin, 2000 | Based on data from 286. to 326. K.; AC |
48.5 | 388. | A | Stephenson and Malanowski, 1987 | Based on data from 373. to 490. K.; AC |
50.7 | 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 (bar)
T = temperature (K)
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Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
317. to 491.1 | 4.70051 | 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, 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) | 901.7 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 869.8 | kJ/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 |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, 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]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, 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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