Ethylene oxide is volatile in the liquid state, its vapor is flammable and explosive, and its explosive limit in the air is 3%-100% (volume fraction).Ethylene oxide begins to polymerize when the temperature is above 40℃.

Ethylene oxide, mainly as a chemical intermediate, is widely used in many fields such as washing and dyeing, electronics, medicine, pesticide, textile, paper making, automobile, petroleum exploitation and refining, aerospace, etc.
Ethylene oxide is mainly consumed by ethylene glycol. 65% ~ 70% of global ethylene oxide production is converted to ethylene glycol.
The second largest use of ethylene oxide is the production of surfactants, other derivatives of ethylene oxide products include ethanolamine, solvents, glycol ether, plasticizer, lubricant, cement water reducer, solar cutting fluid, etc.Ethylene oxide is also used as fumigating insecticides, fungicides, and disinfectants for medical devices.