Trithionic acid

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;
Identifiers
CAS Number	27621-39-2;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:29210;
ChEMBL	ChEMBL3754893;
ChemSpider	KRURGYOKPVLRHQ-UHFFFAOYSA-N;
PubChem CID	492;
CompTox Dashboard (EPA)	DTXSID90182006 ;
	InChI 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;
	SMILES OS(=O)(=O)SS(=O)(=O)O;
Properties
Chemical formula	H2O6S3
Molar mass	194.19 g·mol−1
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)
Solubility in water	1.0·106 mg/L
log P	−1.1
Vapor pressure	1.07·10−16 Pa (8.05·10−19 mm Hg)
Acidity (pKa)	−6.94
Conjugate base	Hydrogen trithionate
Refractive index (nD)	1.700
Pharmacology
	Pharmacokinetics:
Biological half-life	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

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

References

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

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