α-Methylstyrene
- Formula: C9H10
- Molecular weight: 118.1757
- IUPAC Standard InChI: InChI=1S/C9H10/c1-8(2)9-6-4-3-5-7-9/h3-7H,1H2,2H3
- 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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Condensed 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
DH - Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔcH°liquid | -5041.18 | kJ/mol | Ccb | Roberts and Jessup, 1951 | Corresponding ΔfHºliquid = 70.42 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
| ΔcH°liquid | -5093.2 | kJ/mol | Ccb | Lemoult, 1911 | Corresponding ΔfHºliquid = 123. kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
| ΔcH°liquid | -5000.3 | kJ/mol | Ccb | Auwsers, Roth, et al., 1910 | Corresponding ΔfHºliquid = 30. kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| S°liquid | 243.8 | J/mol*K | N/A | Lebedev and Rabinovich, 1971 | DH |
Constant pressure heat capacity of liquid
| Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 202.2 | 300. | Lebedev and Rabinovich, 1971 | T = 60 to 300 K.; DH |
References
Go To: Top, Condensed phase thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Roberts and Jessup, 1951
Roberts, D.E.; Jessup, R.S.,
Heat of polymerization of alpha-methylstyrene from heats of combustion of monomer and four polymer fractions,
J. Res. NBS, 1951, 46, 11-17. [all data]
Lemoult, 1911
Lemoult, M.P.,
Thermochimie. - Recherches sur les derives du styrolene; rectification de quelques erreurs experimentales,
Compt. Rend., 1911, 152, 1402-1404. [all data]
Auwsers, Roth, et al., 1910
Auwsers, K.; Roth, W.A.; Eisenlohr, F.,
III. Verbrennungswarmen von Terpenen und Styrolen,
Justus Liebigs Ann. Chem., 1910, 267-290. [all data]
Lebedev and Rabinovich, 1971
Lebedev, B.V.; Rabinovich, I.B.,
Heat capacities and thermodynamic functions of a-methylstyrene and poly(a-methylstyrene),
Tr. Khim. Khim. Tekhnol., 1971, 1, 12-15. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid S°liquid Entropy of liquid at standard conditions ΔcH°liquid Enthalpy of combustion of liquid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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