Trithionic acid

Trithionic acid

Names
IUPAC names Thiodisulfuric acid[1] 1,5-dihydrido-2,2,4,4-tetraoxido-1,5-dioxy-2,3,4-trisulfy-[5]catena, trithionic acid[2]
Identifiers
CAS Number	27621-39-2[3][4]
3D model (JSmol)	Interactive image
ChEBI	[5] CHEBI:29210[5]
ChEMBL	[6] ChEMBL3754893[6]
ChemSpider	[7].html KRURGYOKPVLRHQ-UHFFFAOYSA-N[7]
PubChem CID	[8][9] 492[8][9]
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)[10][11][12] Key: KRURGYOKPVLRHQ-UHFFFAOYSA-N[13][14][15][16]
SMILES OS(=O)(=O)SS(=O)(=O)O
Properties
Chemical formula	H2O6S3[17][18][19][20]
Molar mass	194.19 g·mol−1[21]
Density	2.4±0.1 g/cm3[22]
Melting point	324.41[23] °C (615.94 °F; 597.56 K)
Boiling point	739.35[24] °C (1,362.83 °F; 1,012.50 K)
Solubility in water	1e+006 mg/L[25]
log P	-1.1[26]
Vapor pressure	1.07E-016 Pa (8.05E-019 mm Hg)[27]
Acidity (pKa)	-6.94[28]
Conjugate base	Hydrogen trithionate
Refractive index (nD)	1.700[29]
Pharmacology
Pharmacokinetics:
Biological half-life	0.570 hours[30]
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 consisting of three sulfur atoms. It can be viewed as two bisulfite radicals bridged by a sulfur atom.

References[]

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