ETHYLENE OXIDE, (12%) AND FREON 12 (80%) Chemical compatibility with O-rings, rubbers, & plastics

A mixture of ethylene oxide (EtO) at approximately 12 percent and Freon 12, also known as dichlorodifluoromethane or CFC 12, at about 80 percent is commonly used in sterilization systems and specialized industrial processing. Ethylene oxide is highly reactive and toxic, while Freon 12 is a chlorofluorocarbon refrigerant. In sterilization equipment and gas handling systems, O-rings, rubber seals, gaskets, and plastic components should be evaluated for chemical compatibility to prevent degradation. Proper handling, storage, ventilation, and protective practices are essential for safe operation.

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