Vistanex (b-100)
- Monomer Formula: C4H8
- Monomer Molecular weight: 56.1063
- CAS Registry Number: 9003-27-4
- 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: 1-Propene, 2-methyl-, homopolymer; polyisobutene; polyisobutylene
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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°liquid | 22.90 | cal/mol*K | N/A | Furukawa and Reilly, 1956 | |
| S°liquid | 23.06 | cal/mol*K | N/A | Furukawa and Reilly, 1955 |
Constant pressure heat capacity of liquid
| Cp,liquid (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 26.22 | 300. | Rabinovich and Lebedev, 1971 | T = 10 to 300 K. |
| 26.123 | 298.15 | Furukawa and Reilly, 1956 | T = 14 to 380 K. Cp(liq) = 0.844 + 3.03x10-3T + 2.24x10-6T2 J/g*K (210 to 380 K). |
| 26.22 | 300. | Furukawa and Reilly, 1955 | T = 14 to 380 K. Cp(c) = 0.844 + 3.03 x 10-3T + 2.24 x 10-6T2 J/g*K (210 to 380 K). |
| 26.15 | 294.9 | Ferry and Parks, 1936 | T = 121 to 295 K. Annealed sample. |
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.
Data compiled by: Coblentz Society, Inc.
Condensed Phase Spectrum
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Notice: Except where noted, spectra from this collection were measured on dispersive instruments, often in carefully selected solvents, and hence may differ in detail from measurements on FTIR instruments or in other chemical environments. More information on the manner in which spectra in this collection were collected can be found here.
Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.
Additional Data
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| Owner | COBLENTZ SOCIETY Collection (C) 2018 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
|---|---|
| Source reference | COBLENTZ NO. 2340 |
| Date | Not specified, most likely prior to 1970 |
| Name(s) | POLYISOBUTYLENE |
| State | SOLID |
| Instrument | Not specified, most likely a prism, grating, or hybrid spectrometer. |
| Resolution | 4 |
| Sampling procedure | TRANSMISSION |
| Data processing | DIGITIZED BY NIST FROM HARD COPY |
References
Go To: Top, Condensed phase thermochemistry data, IR Spectrum, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Furukawa and Reilly, 1956
Furukawa, G.T.; Reilly, M.L.,
Heat capacity of polyisobutylene from 0 to 380K,
J. Research, 1956, NBS 56(5), 285-288. [all data]
Furukawa and Reilly, 1955
Furukawa, G.T.; Reilly, M.L.,
Heat capacity of polyisobutylene from 0 to 380K,
NBS Report, 1955, No. 4024, 16pp. [all data]
Rabinovich and Lebedev, 1971
Rabinovich, I.B.; Lebedev, B.V.,
On the thermodynamic stability of polyisobutylene. Tr. Khim. Khim. Tekhnol., 1971, 194-196. [all data]
Ferry and Parks, 1936
Ferry, J.D.; Parks, G.S.,
Studies on glass XIII. Glass formation by a hydrocarbon polymer,
J. Chem. Phys., 1936, 4, 70-75. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, IR Spectrum, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid S°liquid Entropy of liquid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
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