Trithionic acid

Trithionic acid is a polythionic acid with three sulfur atoms. It can be viewed as two bisulfite radicals bridged by a sulfur atom.

Trithionic acid
Names
IUPAC names
Thiodisulfuric acid, 1,5-dihydrido-2,2,4,4-tetraoxido-1,5-dioxy-2,3,4-trisulfy-[5]catena, trithionic acid[1]
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
  • InChI=1S/H2O6S3/c1-8(2,3)7-9(4,5)6/h(H,1,2,3)(H,4,5,6)
    Key: KRURGYOKPVLRHQ-UHFFFAOYSA-N
  • OS(=O)(=O)SS(=O)(=O)O
Properties
H2O6S3[1][2][3]
Molar mass 194.19 g·mol−1[3]
Density 2.4±0.1 g/cm3
Melting point 324.41 °C (615.94 °F; 597.56 K)
Boiling point 739.35 °C (1,362.83 °F; 1,012.50 K)
1e+006 mg/L
log P -1.1[2]
Vapor pressure 1.07E-016 Pa (8.05E-019 mm Hg)
Acidity (pKa) -6.94[2]
Conjugate base Hydrogen trithionate
1.700
Pharmacology
Pharmacokinetics:
0.570 hours
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

References
  1. EBI Web Team. "trithionic acid (CHEBI:29210)". ChEBI. Retrieved 23 September 2018.
  2. "Compound Report Card". EBI. Retrieved 23 September 2018.
  3. "Trithionic acid". PubChem. Retrieved 23 September 2018.


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