Hydrogen disulfide

Hydrogen disulfide

Sulfur, S   Hydrogen, H
Names
IUPAC name Dihydrogen disulfide
Systematic IUPAC name Disulfane
Other names Dithioperoxol Hydrogen disulphide Hydrogen persulfide Hydrogen persulphide Thiosulfenic acid
Identifiers
CAS Number	13465-07-1 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:33114 Y
ChemSpider	97274 Y
PubChem CID	108196
CompTox Dashboard (EPA)	DTXSID10158844
InChI InChI=1S/H2S2/c1-2/h1-2H Y Key: BWGNESOTFCXPMA-UHFFFAOYSA-N Y InChI=1/H2S2/c1-2/h1-2H Key: BWGNESOTFCXPMA-UHFFFAOYAV
SMILES SS
Properties
Chemical formula	H2S2
Molar mass	66.14 g·mol−1
Appearance	Pale yellow liquid
Density	1.334 g/cm3
Melting point	−89.6 °C (−129.3 °F; 183.6 K)
Boiling point	70.7 °C (159.3 °F; 343.8 K)
Hazards
Flash point	flammable
Related compounds
Related compounds	Hydrogen sulfide Hydrogen peroxide Hydrogen diselenide Hydrogen ditelluride Disulfur dichloride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

Hydrogen disulfide is the inorganic compound with the formula H₂S₂. This hydrogen chalcogenide is a pale yellow volatile liquid with a camphor-like odor. It decomposes readily to hydrogen sulfide (H₂S) and elemental sulfur.^[1]