Propiolaldehyde

Propiolaldehyde
Names
	Preferred IUPAC name Prop-2-ynal
	Other names Propynal; Propiolic aldehyde
Identifiers
CAS Number	624-67-9 ;
3D model (JSmol)	Interactive image;
ChemSpider	11721;
ECHA InfoCard	100.009.871
PubChem CID	12222;
UNII	SJ8A65XF7N ;
CompTox Dashboard (EPA)	DTXSID3060790 ;
	SMILES C#CC=O;
Properties
Chemical formula	C3H2O
Molar mass	54.048 g·mol−1
Appearance	colorless liquid
Density	0.9152 g/cm3
Boiling point	54–57 °C (129–135 °F; 327–330 K)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Propiolaldehyde 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.