Tetrasulfane

Tetrasulfane
Names
	Other names Dihydrogen tetrasulfide;
Identifiers
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:50364;
ChemSpider	74749;
Gmelin Reference	184498
PubChem CID	82836;
	InChI InChI=1S/H2S4/c1-3-4-2/h1-2H Key: IKRMQEUTISXXQP-UHFFFAOYSA-N;
	SMILES SSSS;
Properties
Chemical formula	H2S4
Molar mass	130.26 g·mol−1
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Tetrasulfane (S₄H₂) is an inorganic chemical compound featuring a disulfide and two thiol groups.

Production

Similar to other polysulfanes, it can be made by neutralizing the given polysulfane salt with an acid, such as HCl or H₂SO₄. Example given with HCl and Na₂S₄:^[1]

Na₂S₄ + 2 HCl → 2 NaCl + H₂S₄

Same as other polysulfanes, tetrasulfane it is a yellowish, oily liquid. Its density is around 1.5 g/cm³ (±0.1 g/cm³).^[2]