Propiolaldehyde, propiolic aldehyde
3D model (JSmol)
|Molar mass||54.05 g·mol−1|
|Melting point||59–61 °C (138–142 °F; 332–334 K)|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Propynal is an organic compound with molecular formula HC2CHO. It is the simplest chemical compound containing both alkyne and aldehyde functional groups. It is a colorless liquid with explosive properties.
Occurrence in interstellar medium
Propynal has been observed in the interstellar medium. It is hypothesized to be formed from a carbon monoxide-acetylene complex. Another possible pathway is through the reaction of propynylidyne (C3H) with water.
- P. Perlmutter (2001), "Propargyl Aldehyde", e-EROS Encyclopedia of Reagents for Organic Synthesis, doi:10.1002/047084289X.rp262m
- Zhou, Li; Ralf I. Kaiser (2008), "Pathways to Oxygen-Bearing Molecules in the Interstellar Medium and in Planetary Atmospheres: Cyclopropenone (c-C3H2O) and Propynal (HCCCHO)", The Astrophysical Journal, 686 (2), doi:10.1086/591072/meta
- Xie, Hong-bin; Chang-bin Shao (2007), "Radical-Molecule Reaction C3H + H2O on Amorphous Water Ice: A Promising Route for Interstellar Propynal", The Astrophysical Journal, 670 (1), doi:10.1086/520757/meta
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