Ethylene oxide (EO) sterilization

Ethylene oxide is an organic compound. It is a colorless and transparent liquid at low temperature, and is a colorless gas with pungent odor at normal temperature.
The boiling point is only 10.4℃, and the vapor pressure of ethylene oxide is as high as 141kPa at 30℃.
This high vapor pressure determines that ethylene oxide has a strong penetrating power during disinfection.
It can not only penetrate microporous cotton and wool fabrics, but also penetrate paper, thin cardboard, and plastic films (such as polyethylene, polyvinyl chloride, etc.),
Therefore, ethylene oxide gas can sterilize the articles sealed and packaged with the above materials.
Ethylene oxide is usually mixed with carbon dioxide in a ratio of 80:20 during sterilization.
Ethylene oxide is a gas bactericide, does not corrode metals, has no residual odor, and can kill bacteria (and its endospores),
Molds and fungi are generally used for disinfection and sterilization of items and materials that are not resistant to high temperatures.
Ethylene oxide is also widely used to disinfect medical supplies such as masks, bandages, surgical sutures and surgical instruments, and is called a broad-spectrum antiseptic.
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