Ketene
| Formula / Notation | CH₂=C=O |
|---|---|
| CAS Number | 463-51-4 |
| Also Known As | Ketene gas, ethenone, carbomethene, keten |
What is Ketene?
Ketene is the simplest member of the ketene family — an organic compound with the formula CH₂=C=O containing a cumulated diene system (C=C=O). It is a colorless, toxic gas with a penetrating odor. Ketene is highly reactive and acts as an acetylating agent. It is prepared industrially by pyrolysis of acetic acid or acetone.
Formula & Notation
Other Names / Synonyms: Ketene gas, ethenone, carbomethene, keten
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Ketene is the simplest member of the ketene family — an organic compound with the formula CH₂=C=O containing a cumulated diene system (C=C=O). It is a colorless, toxic gas with a penetrating odor. Ketene is highly reactive and acts as an acetylating agent. It is prepared industrially by pyrolysis of acetic acid or acetone.
Acetylation reactions in organic synthesis. Manufacturing acetic anhydride. Cellulose acetate production. Pharmaceutical synthesis. Polymer chemistry. Laboratory acetylating agent (alternative to acetic anhydride).
Highly toxic — TLV: 0.5 ppm. Lachrymatory and severe irritant to eyes, respiratory tract, and skin. Reactive with moisture, forming acetic acid. Highly flammable. Handle in fume hood with appropriate respiratory protection. IDLH: 1.5 ppm.
The formula or notation for Ketene is: CH₂=C=O