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Ethylene Oxide

Ethylene Oxide, C2H4O, is a colourless, highly toxic, highly flammable, very unstable liquified gas with an ethereal odour above 500 ppm.

Pure ethylene oxide is used:

  • to produce ethylene oxide-based sterilant gases
  • as an intermediate in the manufacturing of other chemicals
  • in calibration mixtures
  • as a sterilant gas in various food, pesticide and medical consumable processes.

Materials Compatibility
Metals: Stainless Steel; Carbon Steel.
Plastics: Kel-F; PTFE.
Elastomers: Buna-N.

Technical Properties
Molecular Weight: 44.05
Specific Gravity (Air = 1): 1.49
Odour: Ethereal
CAS Registry No.: 75-21-8