Crotonaldehyde

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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 Structural formula of cis-crotonaldehyde.svg Structural formula of trans-crotonaldehyde.svg 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

  1. a b Entry on cis-crotonaldehyde in the GESTIS substance database of the IFA , accessed on January 8, 2020(JavaScript required) .
  2. a b Entry on trans-crotonaldehyde in the GESTIS substance database of the IFA , accessed on January 8, 2020(JavaScript required) .
  3. a b Entry on crotonaldehyde, cis-trans isomer mixture in the GESTIS substance database of the IFA , accessed on January 8, 2020(JavaScript required) .