2-Pentene, 2-methyl-
- Formula: C6H12
- Molecular weight: 84.1595
- IUPAC Standard InChIKey: JMMZCWZIJXAGKW-UHFFFAOYSA-N
- CAS Registry Number: 625-27-4
- 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-Methyl-2-pentene; 4-Methyl-3-pentene; (CH3)2C=CHC2H5; 2-Methyl-pentene-2; 2-Methylpent-2-ene
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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:
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 |
---|---|---|---|---|---|
Tboil | 340.2 ± 0.8 | K | AVG | N/A | Average of 22 out of 25 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 138.09 | K | N/A | Boord, Greenlee, et al., 1947 | Uncertainty assigned by TRC = 0.3 K; TRC |
Tfus | 138.04 | K | N/A | Boord, Greenlee, et al., 1947 | Uncertainty assigned by TRC = 0.3 K; TRC |
Tfus | 138.04 | K | N/A | Boord, Perilstein, et al., 1944 | Uncertainty assigned by TRC = 0.4 K; TRC |
Tfus | 138.40 | K | N/A | Van Risseghem, Gredy, et al., 1933 | Uncertainty assigned by TRC = 0.5 K; TRC |
Tfus | 138.5 | K | N/A | Timmermans, 1922 | Uncertainty assigned by TRC = 0.3 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 7.55 | kcal/mol | N/A | Reid, 1972 | AC |
ΔvapH° | 7.55 | kcal/mol | V | Camin and Rossini, 1956 | ALS |
ΔvapH° | 7.55 | kcal/mol | N/A | Pennington, Scott, et al., 1956 | Based on data from 292. to 341. K.; AC |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
7.74 | 292. | A | Stephenson and Malanowski, 1987 | Based on data from 277. to 346. K.; AC |
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
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Additional Data
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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-9061 |
NIST MS number | 230826 |
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.
Boord, Greenlee, et al., 1947
Boord, C.E.; Greenlee, K.W.; Perilstein, W.L.; Derfer, J.M.,
The Synthesis, Purification and Prop. of Hydrocarbons of Low Mol. Wt., Am. Pet. Inst. Res. Proj. 45, Ninth Annu. Rep., Ohio State Univ., June 30, 1947. [all data]
Boord, Perilstein, et al., 1944
Boord, C.E.; Perilstein, W.L.; Greenlee, K.W.,
, Am. Pet. Inst. Hydrocarbon Res. Proj., Sixth Annu. Ref., Ohio State Univ., Aug. 31, 1944. [all data]
Van Risseghem, Gredy, et al., 1933
Van Risseghem, H.; Gredy, B.; Piaux, I.,
C. R. Hebd. Seances Acad. Sci., 1933, 196, 938. [all data]
Timmermans, 1922
Timmermans, J.,
Investigation of the Freezing Point of Organic Substances VII,
Bull. Soc. Chim. Belg., 1922, 31, 389. [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]
Camin and Rossini, 1956
Camin, D.L.; Rossini, F.D.,
Physical properties of the 17 isomeric hexenes of the API research series,
J. Phys. Chem., 1956, 60, 1446. [all data]
Pennington, Scott, et al., 1956
Pennington, R.E.; Scott, D.W.; Finke, H.L.; McCullough, J.P.; Messerly, J.F.; Hossenlopp, I.A.; Waddington, G.,
The chemical thermodynamic properties and rotational tautomerism of 1-propanethiol,
J. Am. Chem. Soc., 1956, 78, 3266-3272. [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, Phase change data, IR Spectrum, Mass spectrum (electron ionization), References
- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point 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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