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Octasulfur information


Octasulfur
Stereo, skeletal formula of octathiocane
Stereo, skeletal formula of octathiocane
Spacefill model of octathiocane
Spacefill model of octathiocane
Ball and stick model of octathiocane
Sample of pulverised octasulfur
Names
Systematic IUPAC name
  • cyclo-Octasulfur[1]
  • Octathiocane[2]
  • Cyclooctasulfane
Other names
Octasulfur
Identifiers
CAS Number
  • 10544-50-0 checkY
3D model (JSmol)
  • Interactive image
ChEBI
  • CHEBI:29385
ChEMBL
  • ChEMBL1235452 checkY
ChemSpider
  • 59726 checkY
Gmelin Reference
2973
MeSH Cyclooctasulfur
PubChem CID
  • 66348
UNII
  • 70FD1KFU70 checkY
CompTox Dashboard (EPA)
  • DTXSID80872924 Edit this at Wikidata
InChI
  • InChI=1S/S8/c1-2-4-6-8-7-5-3-1 checkY
    Key: JLQNHALFVCURHW-UHFFFAOYSA-N checkY
SMILES
  • S1SSSSSSS1
Properties
Chemical formula
S8
Molar mass 256.48 g·mol−1
Appearance Vivid, yellow, translucent crystals
Density 2.07 g/cm3
Melting point 119 °C; 246 °F; 392 K
Boiling point 444.6 °C; 832.4 °F; 717.8 K
log P 6.117
Thermochemistry
Std molar
entropy (S298)
32 J·mol−1·K−1[3]
Std enthalpy of
formation fH298)
0 kJ/mol[3]
Related compounds
Related compounds
Hexathiane
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Octasulfur is an inorganic substance with the chemical formula S8. It is an odourless and tasteless yellow solid, and is a major industrial chemical. It is the most common allotrope of sulfur and occurs widely in nature.[4]

  1. ^ International Union of Pure and Applied Chemistry (2005). Nomenclature of Inorganic Chemistry (IUPAC Recommendations 2005). Cambridge (UK): RSC–IUPAC. ISBN 0-85404-438-8. p. 49. Electronic version.
  2. ^ "cyclooctasulfur (CHEBI:29385)". Chemical Entities of Biological Interest. UK: European Bioinformatics Institute. Main.
  3. ^ a b Zumdahl, Steven S. (2009). Chemical Principles 6th Ed. Houghton Mifflin Company. p. A23. ISBN 978-0-618-94690-7.
  4. ^ Steudel, R., "Homocyclic Sulfur Molecules", Topics Curr. Chem. 1982, 102, 149.

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