Benzene, (1-methylethyl)-
- Formula: C9H12
- Molecular weight: 120.1916
- IUPAC Standard InChIKey: RWGFKTVRMDUZSP-UHFFFAOYSA-N
- CAS Registry Number: 98-82-8
- 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. - Other names: Cumene; Cumol; Isopropylbenzene; 2-Phenylpropane; (1-Methylethyl)benzene; Isopropylbenzol; Benzene, isopropyl-; Cumeen; Isopropilbenzene; Isopropylbenzeen; Propane, 2-phenyl-; 2-Fenilpropano; 2-Fenyl-propaan; Rcra waste number U055; UN 1918; (Methylethyl)benzene; Benzene, i-propyl-; i-Propylbenzene; NSC 8776; iso-propylbenzene (cumene); (1-methylethyl)benzene (cumene)
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Data at other public NIST sites:
- Options:
Data at NIST subscription sites:
NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.
Phase change data
Go To: Top, 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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
BS - Robert L. Brown and Stephen E. Stein
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
CAL - James S. Chickos, William E. Acree, Jr., Joel F. Liebman, Students of Chem 202 (Introduction to the Literature of Chemistry), University of Missouri -- St. Louis
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 425. ± 1. | K | AVG | N/A | Average of 58 out of 64 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 177.0 ± 0.7 | K | AVG | N/A | Average of 13 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 177.13 | K | N/A | Kishimoto, Suga, et al., 1973 | Uncertainty assigned by TRC = 0.01 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 631.0 ± 0.5 | K | N/A | Tsonopoulos and Ambrose, 1995 | |
Tc | 631.1 | K | N/A | Ambrose and Grant, 1957 | Uncertainty assigned by TRC = 0.15 K; TRC |
Tc | 624.55 | K | N/A | Glaser and Ruland, 1957 | Uncertainty assigned by TRC = 2. K; TRC |
Tc | 635.9 | K | N/A | Altschul, 1893 | Uncertainty assigned by TRC = 4. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 31.7 ± 0.4 | atm | N/A | Tsonopoulos and Ambrose, 1995 | |
Pc | 31.67 | atm | N/A | Ambrose, Broderick, et al., 1967 | Uncertainty assigned by TRC = 0.06 atm; TRC |
Pc | 27.5000 | atm | N/A | Glaser and Ruland, 1957 | Uncertainty assigned by TRC = 1.5000 atm; TRC |
Pc | 31.19 | atm | N/A | Altschul, 1893 | Uncertainty assigned by TRC = 0.0580 atm; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ρc | 2.32 | mol/l | N/A | Hales and Townsend, 1972 | Uncertainty assigned by TRC = 0.008 mol/l; from fit of obs data to 490 K to Rideal's equation; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 11. ± 1. | kcal/mol | AVG | N/A | Average of 9 values; Individual data points |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
9.85 | 364. | N/A | Cepeda, Gonzalez, et al., 1989 | Based on data from 349. to 426. K.; AC |
10.1 | 354. | A | Stephenson and Malanowski, 1987 | Based on data from 339. to 433. K.; AC |
10.0 | 358. | MM | Forziati, Norris, et al., 1949 | Based on data from 343. to 426. K. See also Willingham, Taylor, et al., 1945.; AC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (atm)
T = temperature (K)
View plot Requires a JavaScript / HTML 5 canvas capable browser.
Temperature (K) | A | B | C | Reference |
---|---|---|---|---|
343.17 to 426.52 | 4.04848 | 1455.811 | -65.948 | Williamham, Taylor, et al., 1945 |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
1.751 | 177.13 | Kishimoto, Suga, et al., 1973, 2 | DH |
1.75 | 177.1 | Kishimoto, Suga, et al., 1973, 2 | AC |
Entropy of fusion
ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
9.885 | 177.13 | Kishimoto, Suga, et al., 1973, 2 | DH |
9.888 | 177.1 | Kishimoto, Suga, et al., 1973 | CAL |
IR Spectrum
Go To: Top, Phase change 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, 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
Notice: This spectrum may be better viewed with a Javascript and HTML 5 enabled browser.
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, 1990. |
NIST MS number | 114201 |
References
Go To: Top, Phase change 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.
Kishimoto, Suga, et al., 1973
Kishimoto, K.; Suga, H.; Seki, S.,
Calorimetric Study of the Glassy State. VIII. Heat Capacity and Relaxational Phenomena of Isopropylbenzene,
Bull. Chem. Soc. Japan, 1973, 46, 10, 3020, https://doi.org/10.1246/bcsj.46.3020
. [all data]
Tsonopoulos and Ambrose, 1995
Tsonopoulos, C.; Ambrose, D.,
Vapor-Liquid Critical Properties of Elements and Compounds. 3. Aromatic Hydrocarbons,
J. Chem. Eng. Data, 1995, 40, 547-558. [all data]
Ambrose and Grant, 1957
Ambrose, D.; Grant, D.G.,
The Critical Temperatures of Some Hydrocarbons and Pyridine Bases,
Trans. Faraday Soc., 1957, 53, 771. [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]
Altschul, 1893
Altschul, M.,
The critical values of some organic compounds,
Z. Phys. Chem., Stoechiom. Verwandtschaftsl., 1893, 11, 577. [all data]
Ambrose, Broderick, et al., 1967
Ambrose, D.; Broderick, B.E.; Townsend, R.,
The Vapour Pressures above the Normal Boiling Point and the Critical Pressures of Some Aromatic Hydrocarbons,
J. Chem. Soc. , 1967, 1967, 1967, 633-41. [all data]
Hales and Townsend, 1972
Hales, J.L.; Townsend, R.,
Liquid Densities from 293 to 490 K of Nine Aromatic Hydrocarbons,
J. Chem. Thermodyn., 1972, 4, 763-72. [all data]
Cepeda, Gonzalez, et al., 1989
Cepeda, Emilio; Gonzalez, Cristina; Resa, Jose M.,
Isobaric vapor-liquid equilibrium for the cumene-phenol system,
J. Chem. Eng. Data, 1989, 34, 3, 270-273, https://doi.org/10.1021/je00057a004
. [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]
Willingham, Taylor, et al., 1945
Willingham, C.B.; Taylor, W.J.; Pignocco, J.M.; Rossini, F.D.,
Vapor pressures and boiling points of some paraffin, alkylcyclopentane, alkylcyclohexane, and alkylbenzene hydrocarbons,
J. RES. NATL. BUR. STAN., 1945, 35, 3, 219-17, https://doi.org/10.6028/jres.035.009
. [all data]
Williamham, Taylor, et al., 1945
Williamham, C.B.; Taylor, W.J.; Pignocco, J.M.; Rossini, F.D.,
Vapor Pressures and Boiling Points of Some Paraffin, Alkylcyclopentane, Alkylcyclohexane, and Alkylbenzene Hydrocarbons,
J. Res. Natl. Bur. Stand. (U.S.), 1945, 35, 3, 219-244, https://doi.org/10.6028/jres.035.009
. [all data]
Kishimoto, Suga, et al., 1973, 2
Kishimoto, K.; Suga, H.; Syuzo, S.,
Calorimetric study of the glassy state. VIII. Heat capacity and relaxational phenomena of isopropylbenzene,
Bull. Chem. Soc. Japan, 1973, 46, 3020-3031. [all data]
Notes
Go To: Top, Phase change data, IR Spectrum, Mass spectrum (electron ionization), 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 ρc Critical density - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.