Trisulfuryl chloride

Trisulfuryl chloride

Names
Other names Bis(chlorosulfonyl) sulfate
Identifiers
CAS Number	13637-77-9
3D model (JSmol)	Interactive image
PubChem CID	101282780
InChI InChI=1S/Cl2O8S3/c1-11(3,4)9-13(7,8)10-12(2,5)6 Key: QRCGDDSWWPZGAR-UHFFFAOYSA-N
SMILES O=S(=O)(OS(=O)(=O)Cl)OS(=O)(=O)Cl
Properties
Chemical formula	Cl2O8S3
Molar mass	295.07 g·mol−1
Appearance	liquid
Solubility in water	reacts with water
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Trisulfuryl chloride is an inorganic compound of chlorine, oxygen, and sulfur with the chemical formula S₃O₈Cl₂. ^[1]

Synthesis

Trisulfuryl chloride is obtained from sulfur trioxide and carbon tetrachloride at 80 °C: ^{[2] [3]}

3SO₃ + CCl₄ → S₃O₈Cl₂ + OCCl₂

Physical properties

The compound decomposes to disulfuryl chloride and SO₃ when heated to 116 °C: ^[2]

S₃O₈Cl₂ → S₂O₅Cl₂ + SO₃

It fumes in air and hydrolizes slowly in cold water. It is insoluble in concentrated H₂SO₄. ^[4]

See also

• Sulfuryl chloride
• Sulfuryl fluoride
• Disulfuryl chloride
• Disulfuryl fluoride

References

1. Sneed, Mayce Cannon (1961). Comprehensive Inorganic Chemistry: Brasted, R. C. Sulfur, selenium, tellurium, polonium, and oxygen. Van Nostrand. p. 105. Retrieved 20 August 2025.
2. Bailar, J. C. (15 October 2013). Comprehensive Inorganic Chemistry. Elsevier. p. 858. ISBN   978-1-4832-8313-5 . Retrieved 20 August 2025.
3. Lehmann, Hans-Albert; Ladwig, Gerhard (1956). "Zur Chemie des Schwefeltrioxyds. VIII. Darstellung und Eigenschaften von Polysulfurylchloriden; Trisulfurylchlorid, S3O8Cl2". Zeitschrift für anorganische und allgemeine Chemie (in German). 284 (1–3): 1–9. Bibcode:1956ZAACh.284....1L. doi:10.1002/zaac.19562840102. ISSN   1521-3749 . Retrieved 20 August 2025.
4. Cotton, F. Albert (17 September 2009). Progress in Inorganic Chemistry, Volume 2. John Wiley & Sons. p. 87. ISBN   978-0-470-16653-6 . Retrieved 20 August 2025.