Benzenamine, 2,4-dimethyl-
- Formula: C8H11N
- Molecular weight: 121.1796
- IUPAC Standard InChI: InChI=1S/C8H11N/c1-6-3-4-8(9)7(2)5-6/h3-5H,9H2,1-2H3
- IUPAC Standard InChIKey: CZZZABOKJQXEBO-UHFFFAOYSA-N
- CAS Registry Number: 95-68-1
- 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: 2,4-Xylidine; m-Xylidine; 1-Amino-2,4-dimethylbenzene; 2,4-Dimethylaniline; 4-Amino-1,3-dimethylbenzene; 4-Amino-1,3-xylene; 2,4-Dimethylbenzeneamine; m-4-Xylidine; Aniline, 2,4-dimethyl-; 2-Methyl-p-toluidine; 2,4-Dimethylbenzenamine; 4-Amino-3-methyltoluene; 4-Methyl-o-toluidine; 2,4-Dimethylphenylamine; 2,4-Xylylamine; NSC 7640
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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
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 | 487.45 | K | N/A | Buehler, Wood, et al., 1932 | Uncertainty assigned by TRC = 0.5 K; TRC |
| Quantity | Value | Units | Method | Reference | Comment |
| Tfus | 257.25 | K | N/A | Witschonke, 1954 | Metastable crystal phase; Uncertainty assigned by TRC = 1. K; TRC |
| Tfus | 259.35 | K | N/A | Witschonke, 1954 | Metastable crystal phase; Uncertainty assigned by TRC = 0.35 K; TRC |
| Tfus | 259.32 | K | N/A | Witschonke, 1954 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.8 K; TRC |
| Tfus | 261.05 | K | N/A | Witschonke, 1954 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.3 K; TRC |
| Tfus | 258.9 | K | N/A | Birch, Dean, et al., 1949 | Uncertainty assigned by TRC = 1. K; TRC |
Enthalpy of vaporization
| ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 14.7 ± 0.1 | 317. | N/A | Verevkin, 1997 | Based on data from 295. - 339. K.; AC |
| 13.3 | 398. | A | Stephenson and Malanowski, 1987 | Based on data from 383. - 485. K.; AC |
| 13.6 | 341. | N/A | Stull, 1947 | Based on data from 326. - 485. 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 |
|---|---|---|---|---|---|
| 325.9 - 484.7 | 5.17501 | 2293.277 | -41.261 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
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.
Aldrich Chemical Company Inc., 1990
Aldrich Chemical Company Inc.,
Catalog Handbook of Fine Chemicals, Aldrich Chemical Company, Inc., Milwaukee WI, 1990, 1. [all data]
Buehler, Wood, et al., 1932
Buehler, C.A.; Wood, J.H.; Hull, D.C.; Erwin, E.C.,
A Study of Molecular Organic Compounds. IV. The Molecular Organic Compounds of Phenol, their Parachors and Refractivities,
J. Am. Chem. Soc., 1932, 54, 2398. [all data]
Witschonke, 1954
Witschonke, C.R.,
Freezing point and purity data for some organic compounds,
Anal. Chem., 1954, 26, 562-4. [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]
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]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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