OAR 437-004-9740: Ethylene Oxide

Definition: Ethylene oxide or “EtO” means the organic compound with chemical formula C2H4O, and CAS 75-21-8. (1) The employer is responsible to determine, before work begins, if any task or activity assigned to workers will result in a potential exposure to ethylene oxide. (2) Work that exposes employees to ethylene oxide must comply with Division 2/Z, 1910.1047, Ethylene Oxide.