Styrene, oligomers
- Monomer Formula: C8H8
- Monomer Molecular weight: 104.1491
- CAS Registry Number: 9003-53-6
- 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: polystyrene
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Condensed phase thermochemistry data
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| S°solid,1 bar | 32.225 | cal/mol*K | N/A | Chang and Bestul, 1968 | |
| S°solid,1 bar | 30.74 | cal/mol*K | N/A | Warfield and Petree, 1961 | |
| S°solid,1 bar | 32.22 | cal/mol*K | N/A | Lebedev, Smirnova, et al., 1983 | glass phase |
Constant pressure heat capacity of solid
| Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 30.47 | 298.15 | Lebedev, Smirnova, et al., 1983 | glass phase; T = 7 to 330 K. |
| 30.468 | 298.15 | Chang and Bestul, 1968 | T = 10 to 360 K. National Bureau of Standards sample 705. |
| 29.71 | 298. | Abu-Isa and Dole, 1965 | T = 223 to 553 K. Value per monomer unit. |
| 30.43 | 298.15 | Karasz, Bair, et al., 1965 | T = 305 to 525 K. Glass transition at 355 K. Values per C8H8 unit. |
| 30.52 | 298.15 | Karasz, Bair, et al., 1965 | amorphous phase; T = 80 to 480 K. Also annealed sample, 293 to 378 K. Glass transition at about 367 K. Values per C8H8 unit. |
| 31.36 | 298.16 | Warfield and Petree, 1961 | T = 5 to 395 K. Interpolated. |
IR Spectrum
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Condensed Phase Spectrum
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Additional Data
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| Owner | Public domain |
|---|---|
| Origin | Pacific Northwest National Laboratory Under IARPA Contract |
| Date | March 2017 |
| State | liquid |
| Instrument | Bruker Tensor 27 FTIR |
| Instrument resolution | 2.0 cm-1 |
| IR source | Silicon carbide glow bar |
| Aperture | 3 mm |
| Beam splitter | Broadband potassium bromide (KBr) |
| Detector | DLTGS at room temperature |
| Scanner velocity | 10 kHz |
| Phase correction | Mertz |
| Interferogram zero fill | 4x |
| Spectral interval after zero fill | 0.4823 cm-1 |
| Spectral range | 7800 to 400 cm-1 (1.282 to 25 microns) |
| Resolution | 0.48212986 |
| Apodization | Norton-Beer, Medium |
| Folding limits | 15802 to 0 cm-1 |
| Number of interferograms averaged per single channel spectrum | 128 |
References
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Chang and Bestul, 1968
Chang, S.S.; Bestul, A.B.,
Heat capacities for atactic polystyrene or narrow molecular weight distribution to 360K,
J. Polymer Sci., 1968, A-26, 849-860. [all data]
Warfield and Petree, 1961
Warfield, R.W.; Petree, M.C.,
Thermodynamic properties of polystyrene and styrene,
J. Polymer Sci., 1961, 55, 497-505. [all data]
Lebedev, Smirnova, et al., 1983
Lebedev, B.V.; Smirnova, N.N.; Lebedev, N.K.; Kozyreva, N.M.; Kirilin, A.I.; Korshak, V.V.,
Effect of replacing hydrogen by deuterium and the associated difference on chain links on the thermodynamic properties of polystyrene over the range 0-350°K,
Dokl. Akad. Nauk, 1983, SSSR 270, 129-132. [all data]
Abu-Isa and Dole, 1965
Abu-Isa, I.; Dole, M.,
Specific heat of synthetic high polymers. XII. Atactic and isotactic polystyrene,
J. Phys. Chem., 1965, 69, 2668-2675. [all data]
Karasz, Bair, et al., 1965
Karasz, F.E.; Bair, H.E.; O'Reilly, J.M.,
Thermal properties of atactic and isotactic polystyrene,
J. Phys. Chem., 1965, 69, 2657-2667. [all data]
Notes
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- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid S°solid,1 bar Entropy of solid at standard conditions (1 bar) - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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