Ethylene oxide is a versatile compound used in the production of other chemicals for a variety of industrial applications and everyday consumer products, including household cleaners, personal care items and fabrics and textiles.
A small but important use of ethylene oxide is the sterilization of medical equipment, including the sterilization of personal protective equipment used by doctors and hospitals across the country. It is estimated that ethylene oxide sterilizes 20 billion medical devices each year, helping to prevent disease and infection.
Uses & Benefits
Consumer Applications
Most ethylene oxide is used as an intermediate in the production of other chemicals used to manufacture products, such as fabrics for clothes, upholstery, carpet and pillows. It is used to produce ethylene glycols for engine antifreeze that keeps our automobiles performing. Other ethylene oxide derivatives are used in household cleaners and personal care items such as cosmetics and shampoos.
Medical Applications
Ethylene oxide sterilization processes can sanitize medical and pharmaceutical products that cannot support conventional, high-temperature steam sterilization procedures. Delicate, heat-sensitive medical devices that incorporate plastics and electronics could be warped or otherwise damaged by steam sterilization. A low-temperature sterilizer, ethylene oxide gas will not damage these types of medical devices.
Ethylene oxide also is used to sterilize other healthcare products, such as bandages and ointments, reducing potential damage to the product that may occur from other means of sterilization. Approximately 50 percent of medical supplies are sterilized with ethylene oxide, making it critical to the U.S. healthcare industry. The sterilization process is tightly controlled and the ethylene oxide gas is removed from the products before they are used. According to the FDA, “These standards help ensure levels of ethylene oxide on medical devices are within safe limits.”
Industrial Applications
Ethylene glycol, which is derived from ethylene oxide, is used to manufacture fiberglass used in products ranging from jet skis to bathtubs to bowling balls, as well as polyethylene terephthalate (PET) plastic resin to make beverage containers and packaging film. Ethylene oxide derivatives are used as ingredients in industrial cleaners, heat transfer liquids, polyurethanes and plasticizers.
Safety Information
Ethylene Oxide Exposure
Any potential association between ethylene oxide and cancer is linked only to chronic exposure. There is minimal cancer risk for the general population because most people are not exposed to significant quantities of ethylene oxide.
The Occupational Safety and Health Administration’s (OSHA) ethylene oxide standard requires employers where ethylene oxide is present in the workplace to monitor employee exposure. Under OSHA’s ethylene oxide standard, employers must provide appropriate protective clothing and equipment to employees who may be exposed to ethylene oxide. The National Institute of Occupational Safety and Health and the American Conference of Governmental Industrial Hygenists also provide guidance for industrial exposure to ethylene oxide.
Regulations
Sources of ethylene oxide emissions to the atmosphere are regulated under EPA’s National Emission Standards for Hazardous Air Pollutants (NESHAP) rules. These standards require, among other things, installation of control devices to reduce emissions, emissions monitoring, performance testing, site-specific operating parameters, and continued reporting and recordkeeping. The 2014 EPA National Emissions Inventory (NEI) reported a downward trend in national ethylene oxide emissions for the industrial sector (from 716.49 tons per year in 2002 to 153.16 tons per year in 2014).
Additionally, companies that make and work with ethylene oxide invest in research and product stewardship technologies so that they can continue to help protect communities, with advanced technologies to track and manage emissions. Manufacturers also share best practices for responsibly producing, shipping, and handling ethylene oxide.
SOURCE: https://www.chemicalsafetyfacts.org/ethylene-oxide/
