Benzene, 1-bromo-2-methyl-
- Formula: C7H7Br
- Molecular weight: 171.034
- IUPAC Standard InChIKey: QSSXJPIWXQTSIX-UHFFFAOYSA-N
- CAS Registry Number: 95-46-5
- 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: Toluene, o-bromo-; o-Bromotoluene; o-Tolyl bromide; 1-Bromo-2-methylbenzene; 2-Bromotoluene; 2-Methylbromobenzene; 2-Tolyl bromide; o-Methylphenyl bromide; 1-Methyl-2-bromobenzene; 2-Bromo-1-methylbenzene; NSC 6532
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Phase change data
Go To: Top, Reaction thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), 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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 454.6 ± 0.4 | K | AVG | N/A | Average of 9 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 245.4 | K | N/A | Dreisbach, 1955 | Uncertainty assigned by TRC = 0.02 K; TRC |
Tfus | 246.34 | K | N/A | Clements, Wise, et al., 1953 | Uncertainty assigned by TRC = 0.06 K; TRC |
Tfus | 246.55 | K | N/A | Hussey and Dyer, 1951 | Uncertainty assigned by TRC = 1. K; TRC |
Tfus | 245.05 | K | N/A | Timmermans, 1921 | Uncertainty assigned by TRC = 0.15 K; TRC |
Reduced pressure boiling point
Tboil (K) | Pressure (bar) | Reference | Comment |
---|---|---|---|
332.2 | 0.013 | Weast and Grasselli, 1989 | BS |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
47.2 | 337. | N/A | Dykyj, Svoboda, et al., 1999 | Based on data from 322. to 455. K.; AC |
45.3 | 368. | A | Stephenson and Malanowski, 1987 | Based on data from 353. to 518. K. See also Dykyj and Vanko, 1970 and Kkykj and Repas, 1973.; AC |
52.6 | 312. | N/A | Stull, 1947 | Based on data from 297. to 455. K.; AC |
48.8 | 288. | N/A | Stuckey and Saylor, 1940 | Based on data from 273. to 348. 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 |
---|---|---|---|---|---|
297.6 to 455.0 | 3.91296 | 1440.879 | -85.87 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
Reaction thermochemistry data
Go To: Top, Phase change data, IR Spectrum, Mass spectrum (electron ionization), 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: John E. Bartmess
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
C7H6Br- + =
By formula: C7H6Br- + H+ = C7H7Br
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1563. ± 13. | kJ/mol | G+TS | Wenthold, Wierschke, et al., 1994 | gas phase; Between MeOCH2CH2OH and tBuCH2OH, near CH2Cl2 |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1533. ± 13. | kJ/mol | IMRB | Wenthold, Wierschke, et al., 1994 | gas phase; Between MeOCH2CH2OH and tBuCH2OH, near CH2Cl2 |
IR Spectrum
Go To: Top, Phase change data, Reaction thermochemistry data, Mass spectrum (electron ionization), References, Notes
Data compiled by: Coblentz Society, Inc.
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Mass spectrum (electron ionization)
Go To: Top, Phase change data, Reaction thermochemistry data, IR 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
Spectrum
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Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
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 | 291336 |
References
Go To: Top, Phase change data, Reaction thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Dreisbach, 1955
Dreisbach, R.R.,
Physical Properties of Chemical Compounds, Advances in Chemistry Series No. 15, Am. Chem. Soc.: Washington, D. C., 1955. [all data]
Clements, Wise, et al., 1953
Clements, H.E.; Wise, K.V.; Johnson, S.E.J.,
Physical Properties of o-, m-, and p-Methylstyrene,
J. Am. Chem. Soc., 1953, 75, 1593. [all data]
Hussey and Dyer, 1951
Hussey, A.S.; Dyer, J.R.,
The Monomagnesium Derivatives of Dibromotoluenes,
J. Am. Chem. Soc., 1951, 73, 603. [all data]
Timmermans, 1921
Timmermans, J.,
The Freezing Points of Organic Substances IV. New Exp. Determinations,
Bull. Soc. Chim. Belg., 1921, 30, 62. [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]
Dykyj, Svoboda, et al., 1999
Dykyj, J.; Svoboda, J.; Wilhoit, R.C.; Frenkel, M.L.; Hall, K.R.,
Vapor Pressure of Chemicals: Part A. Vapor Pressure and Antoine Constants for Hydrocarbons and Sulfur, Selenium, Tellurium and Hydrogen Containing Organic Compounds, Springer, Berlin, 1999, 373. [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]
Dykyj and Vanko, 1970
Dykyj, J.; Vanko, A.,
Petrochemica, 1970, 10, 1, 3. [all data]
Kkykj and Repas, 1973
Kkykj, J.; Repas, M.,
Petrochemia, 1973, 13, 179. [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]
Stuckey and Saylor, 1940
Stuckey, James M.; Saylor, John H.,
The Vapor Pressures of Some Organic Compounds. I. 1,
J. Am. Chem. Soc., 1940, 62, 11, 2922-2925, https://doi.org/10.1021/ja01868a011
. [all data]
Wenthold, Wierschke, et al., 1994
Wenthold, P.G.; Wierschke, S.G.; Nash, J.J.; Squires, R.R.,
Biradical thermochemistry from collision-induced dissociation threshold energy measurements .2. Experimental and theoretical studies of the Mechanism and Thermochemistry of Formation of alph,
J. Am. Chem. Soc., 1994, 116, 16, 7378, https://doi.org/10.1021/ja00095a048
. [all data]
Notes
Go To: Top, Phase change data, Reaction thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), References
- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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