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ethylene oxide; oxirane

CAS 75-21-8 · C2H4O
Hazard class
Danger — Flammable, Gas under pressure, Health hazard, Toxic, Corrosive
Pictograms
FlammableGas under pressureHealth hazardToxicCorrosive
H-statements
  • H220 Extremely flammable gas
  • H350 May cause cancer
  • H340 May cause genetic defects
  • H360Fd May damage fertility. Suspected of damaging the unborn child
  • H331 Toxic if inhaled
  • H301 Toxic if swallowed
  • H335 May cause respiratory irritation
  • H336 May cause drowsiness or dizziness
  • H372 Causes damage to organs through prolonged or repeated exposure
  • H314 Causes severe skin burns and eye damage
  • H318 Causes serious eye damage
Common uses (US EPA CDR)
IntermediateMonomers
Workplace exposure limits
NIOSH REL Ca TWA <0.1 ppm (0.18 mg/m3) C 5 ppm (9 mg/m3) [10-min/day] E
OSHA PEL TWA 1 ppm 5 ppm [15-minute Excursion]
IDLH Ca [800 ppm]
Occupational exposure limits — NIOSH Pocket Guide.
Synonyms
Oxirane · ETHYLENE OXIDE · Epoxyethane · 1,2-Epoxyethane · Oxacyclopropane · Dihydrooxirene · Anprolene · Oxidoethane
Molecular weight
44.05 g/mol
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). Reagent 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.