o-Toluidine
- Formula: C7H9N
- Molecular weight: 107.1531
- IUPAC Standard InChIKey: RNVCVTLRINQCPJ-UHFFFAOYSA-N
- CAS Registry Number: 95-53-4
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
View 3d structure (requires JavaScript / HTML 5) - Other names: Benzenamine, 2-methyl-; o-Aminotoluene; o-Methylaniline; o-Methylbenzenamine; o-Tolylamine; 1-Amino-2-methylbenzene; 2-Aminotoluene; 2-Methyl-1-aminobenzene; 2-Methylaniline; 2-Methylbenzenamine; 2-Toluidine; 2-Amino-1-methylbenzene; 1-Methyl-2-aminobenzene; o-Toluide; o-Toluidin; o-Toluidyna; Aniline, 2-methyl-; C.I. 37077; Rcra waste number U328; NSC 15348
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Phase change data
Go To: Top, 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 | 473. ± 2. | K | AVG | N/A | Average of 16 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 252. ± 8. | K | AVG | N/A | Average of 10 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 258.730 | K | N/A | Steele, Chirico, et al., 1994 | Uncertainty assigned by TRC = 0.005 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 694.15 | K | N/A | Glaser and Ruland, 1957 | Uncertainty assigned by TRC = 2. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 37.4902 | bar | N/A | Glaser and Ruland, 1957 | Uncertainty assigned by TRC = 2.5331 bar; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 57. ± 10. | kJ/mol | AVG | N/A | Average of 7 values; Individual data points |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
57.8 | 300. | EB,IP | Steele, Chirico, et al., 1994, 2 | Based on data from 290. to 517. K.; AC |
54.5 | 340. | EB,IP | Steele, Chirico, et al., 1994, 2 | Based on data from 290. to 517. K.; AC |
51.5 | 380. | EB,IP | Steele, Chirico, et al., 1994, 2 | Based on data from 290. to 517. K.; AC |
48.6 | 420. | EB,IP | Steele, Chirico, et al., 1994, 2 | Based on data from 290. to 517. K.; AC |
45.7 | 460. | EB,IP | Steele, Chirico, et al., 1994, 2 | Based on data from 290. to 517. K.; AC |
42.7 | 500. | EB.IP | Steele, Chirico, et al., 1994, 2 | Based on data from 290. to 517. K.; AC |
50.0 | 406. | A | Stephenson and Malanowski, 1987 | Based on data from 391. to 474. K. See also Dreisbach and Shrader, 1949 and Boublik, Fried, et al., 1984.; 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 |
---|---|---|---|---|---|
391.61 to 473.5 | 4.19168 | 1617.232 | -87.126 | Dreisbach and Shrader, 1949 | Coefficents calculated by NIST from author's data. |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
8.100 | 249.55 | Meva'a and Lichanot, 1990 | DH |
11.66 | 287.6 | Steele, Chirico, et al., 1994, 2 | AC |
Entropy of fusion
ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
32. | 249.55 | Meva'a and Lichanot, 1990 | DH |
References
Go To: Top, Phase change 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., 1994
Steele, W.V.; Chirico, R.D.; Nguyen, A.; Knipmeyer, S.E.,
The thermodynamic properties of 2-methylaniline and trans-(R,S)-decahydroquinoline,
J. Chem. Thermodyn., 1994, 26, 5, 515, https://doi.org/10.1006/jcht.1994.1061
. [all data]
Glaser and Ruland, 1957
Glaser, F.; Ruland, H.,
Untersuchungsen über dampfdruckkurven und kritische daten einiger technisch wichtiger organischer substanzen,
Chem. Ing. Techn., 1957, 29, 772. [all data]
Steele, Chirico, et al., 1994, 2
Steele, W.V.; Chirico, R.D.; Nguyen, A.; Knipmeyer, S.E.,
The thermodynamic properties of 2-methylaniline and trans-(r,S)-decahydroquinoline,
J. Chem. Thermodyn., 1994, 26, 515-544. [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]
Dreisbach and Shrader, 1949
Dreisbach, R.R.; Shrader, S.A.,
Vapor Pressure--Temperature Data on Some Organic Compounds,
Ind. Eng. Chem., 1949, 41, 12, 2879-2880, https://doi.org/10.1021/ie50480a054
. [all data]
Boublik, Fried, et al., 1984
Boublik, T.; Fried, V.; Hala, E.,
The Vapour Pressures of Pure Substances: Selected Values of the Temperature Dependence of the Vapour Pressures of Some Pure Substances in the Normal and Low Pressure Region, 2nd ed., Elsevier, New York, 1984, 972. [all data]
Meva'a and Lichanot, 1990
Meva'a, L.M.; Lichanot, A.,
Proprietes thermodynamiques en phase condensee des ortho, meta et para fluorotoluene, cresol et toluidine,
Thermochim. Acta, 1990, 158, 335-345. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Pc Critical pressure Tboil Boiling point Tc Critical temperature Tfus Fusion (melting) point Ttriple Triple point temperature ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion 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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