Cyclic octaatomic sulfur
- Formula: S8
- Molecular weight: 256.520
- IUPAC Standard InChI: InChI=1S/S8/c1-2-4-6-8-7-5-3-1
- IUPAC Standard InChIKey: JLQNHALFVCURHW-UHFFFAOYSA-N
- CAS Registry Number: 10544-50-0
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Sulfur (S8); Sulfur octamer; Sulfur, mol. (S8); Cyclooctasulfur; Octathiocane; Orthorhombic sulfur; Sulfur molecule (S8); S8; Cyclooctasulphur; Octasulfur; 115725-44-5; Sulfur
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Gas phase thermochemistry data
Go To: Top, Mass spectrum (electron ionization), Gas Chromatography, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| S°gas,1 bar | 430.23 | J/mol*K | Review | Chase, 1998 | Data last reviewed in September, 1977 |
Gas Phase Heat Capacity (Shomate Equation)
Cp° = A + B*t + C*t2 + D*t3 +
E/t2
H° − H°298.15= A*t + B*t2/2 +
C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 −
E/(2*t2) + G
Cp = heat capacity (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 298. to 6000. |
|---|---|
| A | 180.6697 |
| B | 1.918988 |
| C | -0.520130 |
| D | 0.044394 |
| E | -2.270155 |
| F | -61.56045 |
| G | 635.5496 |
| H | 0.000000 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in September, 1977 |
Mass spectrum (electron ionization)
Go To: Top, Gas phase thermochemistry data, Gas Chromatography, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
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Due to licensing restrictions, this spectrum cannot be downloaded.
| Owner | NIST Mass Spectrometry Data Center Collection (C) 2014 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
|---|---|
| Origin | GAZ DE FRANCE D.E.T.N., B.P. 33, LA PLAINE ST. DENIS, FRANCE |
| NIST MS number | 12510 |
Gas Chromatography
Go To: Top, Gas phase thermochemistry data, Mass spectrum (electron ionization), References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Van Den Dool and Kratz RI, non-polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | HP-5MS | 2083.2 | Andriamaharavo, 2014 | 30. m/0.25 mm/0.25 μm, He; Program: 60C (1 min) => 5 C/min => 210C => 10 C/min => 280C (15 min) |
Normal alkane RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | HP-5 MS | 1998. | Kotowska, Zalikowski, et al., 2012 | 30. m/0.25 mm/0.25 μm, Helium, 35. C @ 5. min, 3. K/min, 300. C @ 15. min |
Normal alkane RI, non-polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | HP-5 MS | 2004. | Kotowska, Zalikowski, et al., 2012 | 30. m/0.25 mm/0.25 μm, Helium; Program: not specified |
| Capillary | RTX-5 MS | 2055. | Nadaf, Halimi, et al., 2012 | 15. m/0.25 mm/0.25 μm, Helium; Program: 35 0C (6 min) 5 0C/min -> 150 0C 10 0C/min -> 280 0C (3 min) |
Lee's RI, non-polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | Methyl Silicone | 342.96 | Eckel, Ross, et al., 1993 | Program: not specified |
References
Go To: Top, Gas phase thermochemistry data, Mass spectrum (electron ionization), Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Chase, 1998
Chase, M.W., Jr.,
NIST-JANAF Themochemical Tables, Fourth Edition,
J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]
Andriamaharavo, 2014
Andriamaharavo, N.R.,
Retention Data. NIST Mass Spectrometry Data Center., NIST Mass Spectrometry Data Center, 2014. [all data]
Kotowska, Zalikowski, et al., 2012
Kotowska, U.; Zalikowski, M.; Isidorov, V.A.,
HS-SPME/GC-MS analysis of volatile and semi-volatile organic compounds emitted from municipal sewage sludge,
Environ. Monit. Asses., 2012, 184, 5, 2893-2907, https://doi.org/10.1007/s10661-011-2158-8
. [all data]
Nadaf, Halimi, et al., 2012
Nadaf, M.; Halimi, M.; Mortazavi, M.,
Identification of nonpolar chemical composition Spartium junceum flower growing in Iran by GC-MS,
Middle-East J. Sci. Res., 2012, 11, 2, 221-224. [all data]
Eckel, Ross, et al., 1993
Eckel, W.P.; Ross, B.; Isensee, R.K.,
Pentobarbital found in ground water,
Ground Water, 1993, 31, 5, 801-804, https://doi.org/10.1111/j.1745-6584.1993.tb00853.x
. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Mass spectrum (electron ionization), Gas Chromatography, References
- Symbols used in this document:
S°gas,1 bar Entropy of gas at standard conditions (1 bar) - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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