Benzene, 1,3-dimethyl-2-nitro-
- Formula: C8H9NO2
- Molecular weight: 151.1626
- IUPAC Standard InChIKey: HDFQKJQEWGVKCQ-UHFFFAOYSA-N
- CAS Registry Number: 81-20-9
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: m-Xylene, 2-nitro-; 1,3-Dimethyl-2-nitrobenzene; 2-Nitro-m-xylene; 2,6-Dimethylnitrobenzene; 2-Nitro-1,3-dimethylbenzene
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Gas 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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | 8.6 ± 1.6 | kJ/mol | Ccb | Acree, Tucker, et al., 1993 |
Phase change data
Go To: Top, Gas phase thermochemistry 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 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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tfus | 288. | K | N/A | Witschonke, 1954 | Uncertainty assigned by TRC = 0.4 K; TRC |
Tfus | 288.55 | K | N/A | Witschonke, 1954 | Uncertainty assigned by TRC = 0.3 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 57.5 ± 0.8 | kJ/mol | N/A | Verevkin and Heintz, 2000 | AC |
ΔvapH° | 59.4 ± 0.9 | kJ/mol | C | Acree, Tucker, et al., 1993 | ALS |
Reduced pressure boiling point
Tboil (K) | Pressure (bar) | Reference | Comment |
---|---|---|---|
498.2 | 0.992 | Weast and Grasselli, 1989 | BS |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
57.2 ± 0.8 | 303. | GS | Verevkin and Heintz, 2000 | Based on data from 284. to 323. K.; AC |
49.7 | 388. | A | Stephenson and Malanowski, 1987 | Based on data from 373. to 498. K.; AC |
References
Go To: Top, Gas phase thermochemistry data, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Acree, Tucker, et al., 1993
Acree, W.E., Jr.; Tucker, S.A.; Pilcher, G.; Chowdhary, A.; Ribeiro da Silva, M.D.M.; Monte, M.J.S.,
Enthalpies of combustion of 2,2',4,4',6,6'-hexamethylazobenzene-N,N-dioxide, 2,2',6,6'-tetramethylazobenzene-N,N-dioxide, 2,4,6-trimethylnitrobenzene, and 2,6-dimethyl-nitrobenzene: the dissociation enthalpies of the N=N and N-O bonds,
J. Chem. Thermodyn., 1993, 25, 1253-1261. [all data]
Witschonke, 1954
Witschonke, C.R.,
Freezing point and purity data for some organic compounds,
Anal. Chem., 1954, 26, 562-4. [all data]
Verevkin and Heintz, 2000
Verevkin, Sergey P.; Heintz, Andreas,
Thermochemistry of substituted benzenes: quantification of ortho-, para-, meta-, and buttress interactions in alkyl-substituted nitrobenzenes,
The Journal of Chemical Thermodynamics, 2000, 32, 9, 1169-1182, https://doi.org/10.1006/jcht.2000.0589
. [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]
Notes
Go To: Top, Gas phase thermochemistry data, Phase change data, References
- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point ΔfH°gas Enthalpy of formation of gas at standard conditions 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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