| IUPAC name
| Other names
|Molar mass||42.037 g/mol|
|Density||0.65 g/cm3 (-60 °C)|
|Melting point||−150.5 °C (−238.9 °F; 122.6 K)|
|Boiling point||−56.1 °C (−69.0 °F; 217.1 K)|
|Solubility|| Reacts with carboxylic acids|
Soluble in acetone, benzene, chloroform, ethanol
Slightly soluble in diethyl ether
Std enthalpy of
|Safety data sheet||CPCB|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Ethenone, or simply ketene, is an organic compound with formula C2H2O or H2C=C=O. It is the simplest member of the ketene class. Ethenone is a tautomer of ethynol.
Ethenone is a colorless, toxic gas, with a strong pungent odor.
Due to its extreme toxicity, ethenone is not sold and has to be made in situ.
- Make acetic anhydride
- Make acetyl halide
DO NOT WORK WITH THIS CHEMICAL UNLESS YOU HAVE EXPERIENCE WORKING WITH VOLATILE LETHAL GASSES!
DO NOT STORE ETHENONE! Use it as soon as possible.
Ethenone can be neutralized by dissolving it in an aqueous alkali solution. Perform the neutralization in a well ventilated area.