Benzene, (1-methylpropyl)-
- Formula: C10H14
- Molecular weight: 134.2182
- IUPAC Standard InChIKey: ZJMWRROPUADPEA-UHFFFAOYSA-N
- CAS Registry Number: 135-98-8
- 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. - Species with the same structure:
- Stereoisomers:
- Other names: Benzene, sec-butyl-; sec-Butylbenzene; 2-Phenylbutane; (1-Methylpropyl)benzene; Secondary butylbenzene; UN 2709; s-Butylbenzene; α-methylpropylbenzene
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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 | -17.4 ± 1.4 | kJ/mol | Ccb | Prosen, Johnson, et al., 1946 |
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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°liquid | -66. ± 1. | kJ/mol | Ccb | Prosen, Johnson, et al., 1946 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -5869.5 ± 1.1 | kJ/mol | Ccb | Prosen, Johnson, et al., 1946 | Corresponding ΔfHºliquid = -66.40 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
Constant pressure heat capacity of liquid
Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
241.7 | 293.74 | Andolenko and Grigor'ev, 1979 | T = 294 to 430 K. Unsmoothed experimental datum given as 1.801 kJ/kg*K.; DH |
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
DRB - Donald R. Burgess, Jr.
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 446. ± 2. | K | AVG | N/A | Average of 40 out of 42 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 197.85 | K | N/A | Birch, Dean, et al., 1949 | Uncertainty assigned by TRC = 0.2 K; TRC |
Tfus | 199.76 | K | N/A | Birch, Dean, et al., 1949 | Uncertainty assigned by TRC = 0.2 K; TRC |
Tfus | 197.68 | K | N/A | Streiff, Murphy, et al., 1947 | Uncertainty assigned by TRC = 0.04 K; TRC |
Tfus | 197.46 | K | N/A | Boord, Greenlee, et al., 1946 | Uncertainty assigned by TRC = 0.1 K; TRC |
Tfus | 197. | K | N/A | Anonymous, 1943 | Uncertainty assigned by TRC = 0.7 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 47.99 | kJ/mol | N/A | Majer and Svoboda, 1985 | |
ΔvapH° | 48.1 | kJ/mol | N/A | Ru«7825»icka, Zábranský, et al., 1994 | AC |
ΔvapH° | 49.5 | kJ/mol | N/A | Reid, 1972 | AC |
ΔvapH° | 48.6 | kJ/mol | N/A | Prosen, Johnson, et al., 1946 | DRB |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
45.7 ± 0.2 | 340. | EB | Steele, Chirico, et al., 2002 | Based on data from 335. to 491. K.; AC |
43.2 ± 0.2 | 380. | EB | Steele, Chirico, et al., 2002 | Based on data from 335. to 491. K.; AC |
40.6 ± 0.3 | 420. | EB | Steele, Chirico, et al., 2002 | Based on data from 335. to 491. K.; AC |
37.8 ± 0.5 | 460. | EB | Steele, Chirico, et al., 2002 | Based on data from 335. to 491. K.; AC |
50.6 | 258. | N/A | Kasehgari, Mokbel, et al., 1993 | Based on data from 243. to 373. K.; AC |
42.8 | 399. | A | Stephenson and Malanowski, 1987 | Based on data from 384. to 448. K.; AC |
44.0 | 375. | N/A | Forziati, Norris, et al., 1949 | Based on data from 368. to 448. 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 |
---|---|---|---|---|
360.27 to 447.51 | 4.07587 | 1540.174 | -68.049 | Forziati, Norris, et al., 1949, 2 |
Henry's Law 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: Rolf Sander
Henry's Law constant (water solution)
kH(T) = k°H exp(d(ln(kH))/d(1/T) ((1/T) - 1/(298.15 K)))
k°H = Henry's law constant for solubility in water at 298.15 K (mol/(kg*bar))
d(ln(kH))/d(1/T) = Temperature dependence constant (K)
k°H (mol/(kg*bar)) | d(ln(kH))/d(1/T) (K) | Method | Reference |
---|---|---|---|
0.072 | L | N/A | |
0.087 | V | N/A |
Gas phase ion energetics 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 evaluated as indicated in comments:
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) | 8.68 ± 0.01 | eV | N/A | N/A | L |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.68 | EI | McLoughlin, Morrison, et al., 1979 | LLK |
8.68 ± 0.01 | PI | Watanabe, Nakayama, et al., 1962 | RDSH |
8.68 ± 0.01 | PI | Price, Bralsford, et al., 1959 | RDSH |
8.66 ± 0.05 | PE | Nagy-Felsobuki and Peel, 1979 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C7H7+ | 10.00 | C3H7 | EI | McLoughlin, Morrison, et al., 1979 | LLK |
C8H9+ | 9.93 | C2H5 | EI | McLoughlin, Morrison, et al., 1979 | LLK |
IR Spectrum
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Data compiled by: Coblentz Society, Inc.
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Mass spectrum (electron ionization)
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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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
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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 | Japan AIST/NIMC Database- Spectrum MS-NW-4626 |
NIST MS number | 228188 |
UV/Visible spectrum
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Spectrum
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Additional Data
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Source | Kusakov, et al., 1963 |
---|---|
Owner | INEP CP RAS, NIST OSRD Collection (C) 2007 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
Origin | INSTITUTE OF ENERGY PROBLEMS OF CHEMICAL PHYSICS, RAS |
Source reference | RAS UV No. 20008 |
Instrument | unknown |
Boiling point | 173.5 |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Henry's Law data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Prosen, Johnson, et al., 1946
Prosen, E.J.; Johnson, W.H.; Rossini, F.D.,
Heats of combustion and formation at 25°C of the alkylbenzenes through C10H14, and of the higher normal monoalkylbenzenes,
J. Res. NBS, 1946, 36, 455-461. [all data]
Andolenko and Grigor'ev, 1979
Andolenko, R.A.; Grigor'ev, B.A.,
Investigation of isobaric heat capacity of aromatic hydrocarbons at atmospheric pressure, Iaz. Vyssh. Ucheb. Zaved.,
Neft i Gaz (11), 1979, 78, 90. [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]
Streiff, Murphy, et al., 1947
Streiff, A.J.; Murphy, E.T.; Cahill, J.C.; Flanagan, H.F.; Sedlak, V.A.; Willingham, C.B.; Rossini, F.D.,
Purification, Purity, and Freezing Points of 8 Nonanes, 11 Alkyl- cyclopentanes, 6 Alkylcyclohexanes, and 4 Butylbenzenes of the API-NBS Series,
J. Res. Natl. Bur. Stand. (U. S.), 1947, 38, 53. [all data]
Boord, Greenlee, et al., 1946
Boord, C.E.; Greenlee, K.W.; Perilstein, W.L.,
The Synthesis, Purification and Prop. of Hydrocarbons of Low Mol. Weight, Am. Pet. Inst. Res. Proj. 45, Eighth Annu. Rep., Ohio State Univ., June 30, 1946. [all data]
Anonymous, 1943
Anonymous, R.,
, Sunbury Rep. No. 2176, Anglo-Iranian Oil Co., 1943. [all data]
Majer and Svoboda, 1985
Majer, V.; Svoboda, V.,
Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation, Blackwell Scientific Publications, Oxford, 1985, 300. [all data]
Ru«7825»icka, Zábranský, et al., 1994
Ru«7825»icka, Vlastimil; Zábranský, Milan; Ru«7825»icka, Kvetoslav; Majer, Vladimír,
Vapor pressures for a group of high-boiling alkylbenzenes under environmental conditions,
Thermochimica Acta, 1994, 245, 121-144, https://doi.org/10.1016/0040-6031(94)85073-9
. [all data]
Reid, 1972
Reid, Robert C.,
Handbook on vapor pressure and heats of vaporization of hydrocarbons and related compounds, R. C. Wilhort and B. J. Zwolinski, Texas A Research Foundation. College Station, Texas(1971). 329 pages.$10.00,
AIChE J., 1972, 18, 6, 1278-1278, https://doi.org/10.1002/aic.690180637
. [all data]
Steele, Chirico, et al., 2002
Steele, W.V.; Chirico, R.D.; Knipmeyer, S.E.; Nguyen, A.,
Vapor Pressure, Heat Capacity, and Density along the Saturation Line: Measurements for Benzenamine, Butylbenzene, sec -Butylbenzene, tert -Butylbenzene, 2,2-Dimethylbutanoic Acid, Tridecafluoroheptanoic Acid, 2-Butyl-2-ethyl-1,3-propanediol, 2,2,4-Trimethyl-1,3-pentanediol, and 1-Chloro-2-propanol,
J. Chem. Eng. Data, 2002, 47, 4, 648-666, https://doi.org/10.1021/je010083e
. [all data]
Kasehgari, Mokbel, et al., 1993
Kasehgari, H.; Mokbel, I.; Viton, C.; Jose, J.,
Vapor pressure of 11 alkylbenzenes in the range 10-3 -- 280 torr, correlation by equation of state,
Fluid Phase Equilibria, 1993, 87, 1, 133-152, https://doi.org/10.1016/0378-3812(93)85022-E
. [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]
Forziati, Norris, et al., 1949
Forziati, Alphonse F.; Norris, William R.; Rossini, Frederick D.,
Vapor pressures and boiling points of sixty API-NBS hydrocarbons,
J. RES. NATL. BUR. STAN., 1949, 43, 6, 555-17, https://doi.org/10.6028/jres.043.050
. [all data]
Forziati, Norris, et al., 1949, 2
Forziati, A.F.; Norris, W.R.; Rossini, F.D.,
Vapor Pressures and Boiling Points of Sixty API-NBS Hydrocarbons,
J. Res. Natl. Bur. Stand. (U.S.), 1949, 43, 6, 555-563, https://doi.org/10.6028/jres.043.050
. [all data]
McLoughlin, Morrison, et al., 1979
McLoughlin, R.G.; Morrison, J.D.; Traeger, J.C.,
Photoionization of the C-1 - C-4 monosubstituted alkyl benzenes: Thermochemistry of [C7H7]+ and [C8H9]+ formation,
Org. Mass Spectrom., 1979, 14, 104. [all data]
Watanabe, Nakayama, et al., 1962
Watanabe, K.; Nakayama, T.; Mottl, J.,
Ionization potentials of some molecules,
J. Quant. Spectry. Radiative Transfer, 1962, 2, 369. [all data]
Price, Bralsford, et al., 1959
Price, W.C.; Bralsford, R.; Harris, P.V.; Ridley, R.G.,
Ultra-violet spectra and ionization potentials of hydrocarbon molecules,
Spectrochim. Acta, 1959, 14, 45. [all data]
Nagy-Felsobuki and Peel, 1979
Nagy-Felsobuki, E.; Peel, J.B.,
Photoelectron spectroscopic studies of the butylbenzenes,
J. Electron Spectrosc. Relat. Phenom., 1979, 16, 397. [all data]
Kusakov, et al., 1963
Kusakov, M.M., et al.,
Ultraviolet Absorption Spectra of Aromatic Hydrocarbons, 1963, 46. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Henry's Law data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, References
- Symbols used in this document:
AE Appearance energy Cp,liquid Constant pressure heat capacity of liquid IE (evaluated) Recommended ionization energy Tboil Boiling point Tfus Fusion (melting) point d(ln(kH))/d(1/T) Temperature dependence parameter for Henry's Law constant k°H Henry's Law constant at 298.15K ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid 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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