Crotonaldehyde
Crotonaldehydes are unsaturated aldehydes with four carbon atoms and one aldehyde group (-CHO). They have the general molecular formula C 4 H 6 O and a molar mass of 70.09 g · mol −1 . There are two stereoisomers , of which trans- protonaldehyde is of the greatest technical importance.
| Crotonaldehyde | |||
| Surname | cis -rotonaldehyde | trans -Crotonaldehyde | cis-trans crotonaldehyde |
| other names | ( Z ) -2-butenal | ( E ) -2-butenal | ( EZ ) -2-butenal |
| Structural formula |  |
 |
cis-trans isomer mixture |
| CAS number | 15798-64-8 | 123-73-9 | 4170-30-3 |
| EC number | - | 204-647-1 | 224-030-0 |
| ECHA info card | - | 100.004.226 | 100,021,846 |
| PubChem | 643950 | 447466 | 447466 |
| Molecular formula | C 4 H 6 O | ||
| Molar mass | 70.09 g mol −1 | ||
| Physical state | liquid | ||
| Melting point | −69 ° C | −74 ° C | −76.6 ° C |
| boiling point | 104 ° C | 102 ° C | 102.4 ° C |
Web links
Commons : Crotonaldehyde - Collection of images, videos and audio files
Individual evidence
- ↑ a b Entry on cis-crotonaldehyde in the GESTIS substance database of the IFA , accessed on January 8, 2020(JavaScript required) .
- ↑ a b Entry on trans-crotonaldehyde in the GESTIS substance database of the IFA , accessed on January 8, 2020(JavaScript required) .
- ↑ a b Entry on crotonaldehyde, cis-trans isomer mixture in the GESTIS substance database of the IFA , accessed on January 8, 2020(JavaScript required) .