Encyclopedia of Astrobiology

Living Edition
| Editors: Muriel Gargaud, William M. Irvine, Ricardo Amils, Henderson James Cleaves, Daniele Pinti, José Cernicharo Quintanilla, Michel Viso


  • Didier Despois
Living reference work entry
DOI: https://doi.org/10.1007/978-3-642-27833-4_1891-4



Thioformaldehyde is the simplest thial or thio aldehyde (an organic compound containing a formyl group and analogous to aldehydes, with CS replacing CO). It is unstable under usual laboratory conditions, but forms a stable cyclic trimer (H2CS)3, 1,3,5-Trithiane. H2CS has been detected in the interstellar medium and in comets.


The 211–212 transition of thioformaldehyde was observed in absorption in the direction of the Galactic Center source Sagittarius B2 by Sinclair et al. in 1973. It was later also detected also in comets by Woodney et al. (1997).

See Also


Organic Compound Laboratory Condition Bioorganic Chemistry Interstellar Medium Center Source 
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References and Further Reading

  1. Sinclair MW, Fourikis N, Ribes JC, Robinson BJ, Brown RD, Godfrey PD (1973) Detection of interstellar thioformaldehyde. Aust J Phys 26:85–91ADSCrossRefGoogle Scholar
  2. Woodney LM, A’Hearn MF, McMullin J, Samarasinha N (1997) Sulfur chemistry at millimeter wavelengths in C/Hale-Bopp. Moon Planet 78:69–70ADSCrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Observatoire de BordeauxFloraicFrance