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Crotonaldehyde (trans)C4H6O

CAS-No.:
123-73-9
UN-No.:
1143
EC-No.:
204-647-1
Hazard identification number:
663
Hazard signs
GHS02
GHS05
GHS06
GHS08
GHS09

*Source: GESTIS Substance Database, https://gestis-database.dguv.de

Occupational exposure limit
ACGIH (US)
  • STEL (ppm) C 0,3
  • STEL (mg/m3) C 0,86
NIOSH (REL) (US)
  • TWA (ppm) 2
  • TWA (mg/m3) 6
OSHA (PEL) (US)
  • TWA (ppm) 2
  • TWA (mg/m3) 6
  • H: 225
    Highly flammable liquid and vapour
  • H: 301
    Toxic if swallowed
  • H: 311
    Toxic in contact with skin
  • H: 315
    Causes skin irritation
  • H: 318
    Causes serious eye damage.
  • H: 330
    Fatal if inhaled
  • H: 335
    May cause respiratory irritation
  • H: 341
    Suspected of causing genetic defects.

  • H: 373
    May cause damage to organs (state all organs affected, if known) through prolonged or repeated exposure (state route of exposure if it is conclusively
    proven that no other routes of exposure cause the hazard)

  • H: 400
    Very toxic to aquatic life

*Source: GESTIS Substance Database, https://gestis-database.dguv.de

  • Melting point:
    -101.2 °F
  • Boiling Point:
    215.6 °F
  • Density (at 20 °C, if not notified otherwise):
    0,85 g/cm3
  • Ionization:
    9,73 eV
  • Flash Point:
    46.4 °F
  • Ignition Temperature:
    446 °F
  • Vapour Pressure (at 20 °C, if not notified otherwise):
    43 hPa
  • Lower Explosive Limit:
    2.1 Vol.-%
  • Upper Explosive Limit:
    15.5 Vol.-%
  • Hazardous Effects:
    M

*Source: GESTIS Substance Database, https://gestis-database.dguv.de

Also known as:
  • (E)-2-Butenal
  • (E)-Crotonaldehyde
  • Acraldehyd
  • Aldehydether
  • alpha-Oxo-beta-Butylen
  • beta-Methylacrolein
  • but-2-enal
  • Crotonic aldehyde
  • Propylene aldehyde
  • trans-2-Butenal
  • trans-But-2-en-1-al
  • trans-Crotonaldehyd
  • trans-Crotonaldehyde
  • trans-Propylenaldehyd

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