Ethylene Oxide

CAS RN: 75-21-8

Explosive Limits / Potential

Lower explosive limit: 3.0%, upper explosive limit: 100%. Explosion hazard: severe, when exposed to flame.
Gas is explosive in concn above 3% & must be mixed with carbon dioxide or fluorocarbons.
Flammable gas. Volatile flammable liquid below room temperature. Explosive decomposition may occur in vapor or liquid phase. Vapor forms explosive mixtures with air over a wide range. Vapors are heavier than air and may travel to a source of ignition and flash back. Closed containers may rupture violently when heated.
Ethylene oxide is highly reactive and potentially explosive when heated or in the presence of alkali metal hydroxides and highly active catalytic surfaces. ... Vapors may be flammable or explosive if there is inadequate heat dissipation.
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