Styrene
- Formula: C8H8
- Molecular weight: 104.1491
- IUPAC Standard InChIKey: PPBRXRYQALVLMV-UHFFFAOYSA-N
- CAS Registry Number: 100-42-5
- 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, ethenyl-; Bulstren K-525-19; Cinnamene; Phenethylene; Phenylethene; Phenylethylene; Styrol (German); Styrole; Styrolene; Styropol SO; Vinylbenzene; Vinylbenzol; Ethenylbenzene; Cinnaminol; Cinnamol; Styrol; Benzene, vinyl-; Cinnamenol; Ethylene, phenyl-; NCI-C02200; Stirolo; Styreen; Styren; Styrene monomer; Vinylbenzen; Annamene; NSC 62785; ethenylbenzene (styrene); Vinylbenzene (styrene)
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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
DRB - Donald R. Burgess, Jr.
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | 146.9 ± 1.0 | kJ/mol | Ccb | Prosen and Rossini, 1945 | ALS |
ΔfH°gas | 151.5 | kJ/mol | N/A | Landrieu, Baylocq, et al., 1929 | Value computed using ΔfHliquid° value of 108.0 kj/mol from Landrieu, Baylocq, et al., 1929 and ΔvapH° value of 43.5 kj/mol from Prosen and Rossini, 1945.; DRB |
ΔfH°gas | 131.5 ± 4.0 | kJ/mol | Ccb | N/A | Value computed using ΔfHliquid° from missing citation and ΔvapH° value of 43.9 kJ/mol from Pitzer, Guttman, et al., 1946. recalculated with modern CO2,H2O thermo; estimated uncertainty (NOTE all values in source also have wrong sign); DRB |
ΔfH°gas | -15.1 | kJ/mol | N/A | Moureu and Andre, 1914 | Value computed using ΔfHliquid° value of -58.6 kj/mol from Moureu and Andre, 1914 and ΔvapH° value of 43.5 kj/mol from Prosen and Rossini, 1945.; DRB |
Quantity | Value | Units | Method | Reference | Comment |
S°gas | 345.1 ± 2.1 | J/mol*K | N/A | Pitzer K.S., 1946 | S(298.16 K)=343.38 J/mol*K was obtained from earlier experimental data [ Guttman L., 1943].; GT |
Constant pressure heat capacity of gas
Cp,gas (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
151.29 ± 0.76 | 373.15 | Scott R.B., 1945 | GT |
Constant pressure heat capacity of gas
Cp,gas (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
45.76 | 50. | Thermodynamics Research Center, 1997 | p=1 bar. Recommended values agree with other statistically calculated values of S(T) and Cp(T) [ Beckett C.W., 1946] within 0.8 and 1.9 J/mol*K, respectively.; GT |
54.19 | 100. | ||
65.81 | 150. | ||
81.77 | 200. | ||
110.03 | 273.15 | ||
120.19 | 298.15 | ||
120.94 | 300. | ||
159.79 | 400. | ||
192.59 | 500. | ||
219.0 | 600. | ||
240.4 | 700. | ||
258.0 | 800. | ||
272.8 | 900. | ||
285.2 | 1000. | ||
295.8 | 1100. | ||
304.9 | 1200. | ||
312.7 | 1300. | ||
319.4 | 1400. | ||
325.2 | 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.
Prosen and Rossini, 1945
Prosen, E.J.; Rossini, F.D.,
Heats of formation and combustion of 1,3-butadiene and styrene,
J. Res. NBS, 1945, 34, 59-63. [all data]
Landrieu, Baylocq, et al., 1929
Landrieu, P.; Baylocq, F.; Johnson, J.R.,
Etude thermochimique dans la serie furanique,
Bull. Soc. Chim. France, 1929, 45, 36-49. [all data]
Pitzer, Guttman, et al., 1946
Pitzer, K.S.; Guttman, L.; Westrum, E.F., Jr.,
The heat capacity, heats of fusion and vaporization, vapor pressure, entropy, vibration frequencies and barrier to internal rotation of styrene,
J. Am. Chem. Soc., 1946, 68, 2209-22. [all data]
Moureu and Andre, 1914
Moureu, C.; Andre, E.,
Thermochimie des composes acetyleniques,
Ann. Chim. Phys., 1914, 1, 113-145. [all data]
Pitzer K.S., 1946
Pitzer K.S., Jr.,
The heat capacity, heats of fusion and vaporization, vapor pressure, entropy, vibrational frequencies, and barrier to internal rotation of styrene,
J. Am. Chem. Soc., 1946, 68, 2209-2212. [all data]
Guttman L., 1943
Guttman L., Jr.,
The thermodynamics of styrene (phenylethylene), including equilibrium of formation from ethylbenzene,
J. Am. Chem. Soc., 1943, 65, 1246-1247. [all data]
Scott R.B., 1945
Scott R.B.,
Specific heats of gaseous 1,3-butadiene, isobutene, styrene, and ethylbenzene,
J. Res. Nat. Bur. Stand., 1945, 34, 243-254. [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]
Beckett C.W., 1946
Beckett C.W.,
The thermodynamics of styrene and its methyl derivatives,
J. Am. Chem. Soc., 1946, 68, 2213-2214. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, References
- Symbols used in this document:
Cp,gas Constant pressure heat capacity of gas S°gas Entropy 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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