# Ethynol

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Not to be confused with [ethanol](/source/Ethanol) or [Vinyl alcohol](/source/Vinyl_alcohol).

**Ethynol** (or **hydroxyacetylene**, **ethynyl alcohol**) is an [alkyne](/source/Alkyne)–[alcohol](/source/Alcohol_(chemistry)) ([ynol](/source/Ynol)) with the [formula](/source/Chemical_formula) C2H2O or CHCHOH. It is the much-less-stable [tautomer](/source/Tautomer) of [ethenone](/source/Ethenone).

At low temperature in a [solid argon matrix](/source/Matrix_isolation) it is possible to tautomerise ethenone to form ethynol.[2][3]

## See also

- [Ethanol](/source/Ethanol) (ethyl alcohol)
- [Ethenol](/source/Vinyl_alcohol) (vinyl alcohol)
- [Acetylenediol](/source/Acetylenediol)

## References

1. ["Ethynol"](https://pubchem.ncbi.nlm.nih.gov/compound/123441). *The PubChem Project*. USA: National Center for Biotechnology Information.

1. Hochstrasser, Remo & Wirz, Jakob (1990). "Reversible Photoisomerisierung von Keten zu Ethinol". *Angewandte Chemie*. **102** (4): 454. [Bibcode:1990AngCh.102..454H](https://ui.adsabs.harvard.edu/abs/1990AngCh.102..454H). [doi:10.1002/ange.19901020438](https://doi.org/10.1002/ange.19901020438)

1. Hochstrasser, Remo & Wirz, Jakob (1989). "Ethinol: Photochemische Erzeugung in einer Argonmatrix, IR-Spektrum und Photoisomerisierung zu Keten". *Angewandte Chemie*. **101** (2): 183. [Bibcode:1989AngCh.101..183H](https://ui.adsabs.harvard.edu/abs/1989AngCh.101..183H). [doi:10.1002/ange.19891010209](https://doi.org/10.1002/ange.19891010209)

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Adapted from the Wikipedia article [Ethynol](https://en.wikipedia.org/wiki/Ethynol) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Ethynol?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.