Ethylene Oxide

CAS ID#: 75-21-8

Affected Organ Systems: Cancer, Developmental (effects during periods when organs are developing) , Endocrine (Glands and Hormones), Hematological (Blood Forming), Neurological (Nervous System), Reproductive (Producing Children), Respiratory (From the Nose to the Lungs)

Cancer Classification:  Please contact NTP, IARC, or EPA with questions on cancer and cancer classification.

Chemical Classification: None

Summary: Ethylene oxide is a flammable gas with a somewhat sweet odor. It dissolves easily in water. Ethylene oxide is a man-made chemical that is used primarily to make ethylene glycol (a chemical used to make antifreeze and polyester). A small amount (less than 1%) is used to control insects in some stored agricultural products and a very small amount is used in hospitals to sterilize medical equipment and supplies.

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Page last reviewed: February 10, 2021