Tetrasulfane

Tetrasulfane
Names
Other names
  • Dihydrogen tetrasulfide
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
184498
  • InChI=1S/H2S4/c1-3-4-2/h1-2H
    Key: IKRMQEUTISXXQP-UHFFFAOYSA-N
  • SSSS
Properties
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

Physical properties

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

References

  1. ^ PubChem. "Tetrasulfane". pubchem.ncbi.nlm.nih.gov. Retrieved 2025-10-20.
  2. ^ "Tetrasulfane". www.chemspider.com. Retrieved 2025-10-20.
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