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Crotonaldehyde
From Wikipedia, the free encyclopedia
| Crotonaldehyde | |
|---|---|
 |
|
| IUPAC name | (E)-2-Butenal |
| Other names | Crotonaldehyde crotoinic aldehyde β-Methacrolein |
| Molecular formula | C4H6O |
| Identifiers | |
| CAS number | [] |
| SMILES | O=C/C=C/C |
| Properties | |
| Molar mass | 70.09 g/mol |
| Density | 0.853 g/cm3 |
| Melting point |
-76.5 °C |
| Boiling point |
104.0 °C |
| Hazards | |
| NFPA 704 |
3
4
2
|
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
|
Crotonaldehyde, or 2-butenal, is an unsaturated aldehyde. It is a clear, highly flammable, lachrymatory liquid. It is moderately soluble in water and well soluble in most organic solvents.
Industrially, crotonaldehyde is used primarily as an intermediate in the synthesis of other chemicals such as butanol, butyraldehyde and quinaldine.
The vapors of crotonaldehyde are extremely irritating to eyes, skin, and mucous membranes. It is sometimes used in small quantities as a warning agent in fuel gases. Its ability to irritate allows detection of small leaks.
Crotonaldehyde is also believed to be mutagenic and carcinogenic. It is listed as an "extremely hazardous substance" as defined by the U.S. Emergency Planning and Community Right-to-Know Act.
- Merck Index, 11th Edition, 2599
- Hazardous Substance Fact Sheet