α-Methylstyrene
- Formula: C9H10
- Molecular weight: 118.1757
- IUPAC Standard InChIKey: XYLMUPLGERFSHI-UHFFFAOYSA-N
- CAS Registry Number: 98-83-9
- 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: Benzene, (1-methylethenyl)-; Styrene, α-methyl-; α-Methylstyrol; β-Phenylpropylene; Isopropenylbenzene; 1-Methyl-1-phenylethylene; 1-Phenyl-1-methylethylene; 1-Propene, 2-phenyl-; 2-Phenyl-1-propene; 2-Phenylpropene; (1-Methylethenyl)benzene; AS-Methylphenylethylene; β-phenylpropene; α-Methylstyreen; α-Metil-stirolo; Isopropenil-benzolo; Isopropenyl-benzeen; Isopropenyl-benzol; 2-Phenylpropylene; UN 2303; Benzene, isopropenyl-; 2-Phenyl-2-propene; 1-Methyl-1-phenylethene; NSC 9400; a-methylstyrene
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Gas phase thermochemistry data
Go To: Top, 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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | 118.3 ± 1.4 | kJ/mol | Eqk | Guthrie, 1978 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°gas | -5083.77 | kJ/mol | Ccb | Krall and Roberts, 1958 | Corresponding ΔfHºgas = 113.0 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
Constant pressure heat capacity of gas
Cp,gas (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
45.52 | 50. | Thermodynamics Research Center, 1997 | p=1 bar.; GT |
57.42 | 100. | ||
73.78 | 150. | ||
94.14 | 200. | ||
128.36 | 273.15 | ||
140.49 | 298.15 | ||
141.38 | 300. | ||
187.68 | 400. | ||
227.07 | 500. | ||
259.1 | 600. | ||
285.1 | 700. | ||
306.5 | 800. | ||
324.3 | 900. | ||
339.3 | 1000. | ||
352.0 | 1100. | ||
362.7 | 1200. | ||
371.9 | 1300. | ||
379.8 | 1400. | ||
386.5 | 1500. |
References
Go To: Top, Gas phase thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Guthrie, 1978
Guthrie, J.P.,
Equilibrium constants for a series of simple aldol condensations, and linear free energy relations with other carbonyl addition reactions,
Can. J. Chem., 1978, 56, 962-973. [all data]
Krall and Roberts, 1958
Krall, R.E.; Roberts, J.D.,
Strain variation in the unsaturated cyclobutane ring,
Am. Chem. Soc. Div. Pet. Chem., 1958, 3, 63-68. [all data]
Thermodynamics Research Center, 1997
Thermodynamics Research Center,
Selected Values of Properties of Chemical Compounds., Thermodynamics Research Center, Texas A&M University, College Station, Texas, 1997. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, References
- Symbols used in this document:
Cp,gas Constant pressure heat capacity of gas ΔcH°gas Enthalpy of combustion of gas at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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