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crotonaldehyde; 2-butenal [1] (E)-2-butenal; (E)-crotonaldehyde [2]

CAS 4170-30-3 · C4H6O
Hazard class
Danger — Flammable, Health hazard, Toxic, Corrosive, Environmental hazard
Pictograms
FlammableHealth hazardToxicCorrosiveEnvironmental hazard
H-statements
  • H225 Highly flammable liquid and vapour
  • H341 Suspected of causing genetic defects
  • H330 Fatal if inhaled
  • H311 Toxic in contact with skin
  • H301 Toxic if swallowed
  • H335 May cause respiratory irritation
  • H373 May cause damage to organs through prolonged or repeated exposure
  • H315 Causes skin irritation
  • H318 Causes serious eye damage
  • H400 Very toxic to aquatic life
Common uses (US EPA CDR)
Intermediate
Workplace exposure limits
NIOSH REL TWA 2 ppm (6 mg/m3) (Aldehydes)
OSHA PEL TWA 2 ppm (6 mg/m3)
IDLH 50 ppm
Occupational exposure limits — NIOSH Pocket Guide.
Synonyms
CROTONALDEHYDE · 2-Butenal · Crotonal · Crotylaldehyde · (E)-but-2-enal · (2E)-but-2-enal · Crotonic aldehyde · Methylpropenal
Molecular weight
70.09 g/mol
Browse similar
Flammable · Health hazard · Toxic · Corrosive · Environmental hazard
Data source
Harmonised classification ECHA — EU CLP Annex VI
Legally binding EU classification adopted by ECHA under CLP Annex VI — the highest-confidence GHS source.
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GHS/CLP classification from authoritative registries (ECHA Annex VI, PubChem). SNRL is a free chemical safety search. Browse categories · API · Console
Guide only. This information is compiled from published safety data sheets and public regulatory registries and is believed correct at the date of publication shown. It is not all-inclusive and shall be used only as a guide. It does not replace the manufacturer’s current Safety Data Sheet, which governs in all cases. SNRL shall not be held liable for any injury, loss or damage resulting from handling of, or contact with, any product listed.