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Ethylenoxide C2H40

Learn everything about ethylene oxide (C2H4O) and find the right gas detection system for ethylene oxide monitoring.

Ethylene oxide (C2H40) and its properties

Ethylene oxide is a colourless, flammable gas with a sweet odour. It is mainly used in industry to produce ethylene glycol and other chemicals, and is also used to sterilise medical devices. Due to its toxic and carcinogenic properties, ethylene oxide must be handled with extreme care to avoid health risks.

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limit values

Information on ethylene oxide limit values

limit values

Lower explosion limit (LEL) 2.6 vol. – %

Pre-alarm: 20% LEL (0.26 vol. – %)
Main alarm 40% LEL (0.52 vol. – %)

gas density

Relative gas density 1.56
Mounting height 10 cm from floor

Gasmerkmale

Questions about the detection of ethylene oxide? Physical state: Colourless gas at room temperature, but can become liquid at low temperatures.
Smell: Sweetish, slightly unpleasant smell.
Flash point: Approximately -17 °C, highly flammable.
Boiling point: Approximately 10.5 °C, evaporates at room temperature.
Explosion hazard: Forms explosive mixtures with air.
Toxicity: Ethylene oxide is toxic and carcinogenic. It can be harmful to health if inhaled.

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Questions about ethylene oxide detection?

DANGERS

Explosion hazard: Ethylene oxide can form explosive mixtures with air. Open flames, sparks or hot surfaces can cause an explosion.
Fire hazard: Ethylene oxide is highly flammable due to its low flash point of -17 °C; it can ignite immediately upon contact with ignition sources.
Toxic vapours: Inhaling ethylene oxide vapours can have serious health consequences, such as breathing difficulties, headaches, nausea and, in the long term, carcinogenic effects.
Risk of frostbite upon escape: Escaping, pressurised, liquid ethylene oxide can cause severe frostbite upon skin contact.

HIGH-RISK SCENARIOS

Explosion in case of leakage: Ethylene oxide that escapes can form explosive mixtures with air. An explosion may occur if an ignition source, such as a spark or open flame, is present.
Fire caused by sparks or hot surfaces: Due to its low ignition temperature, ethylene oxide can ignite immediately upon contact with sparks or hot surfaces and cause a fire.
Risk of suffocation: Ethylene oxide in high concentrations can reduce the oxygen content of the air; in poorly ventilated rooms, this can lead to suffocation.
Health hazards from inhalation: Inhaling ethylene oxide vapours can cause serious health problems, including breathing difficulties, headaches, nausea and long-term carcinogenic effects.

Health risks and handling of ethylene oxide

Konzentration

Konzentration	Symptome/folgen
below 1 ppm	Normal values outdoors
From approximately 50 ppm	health hazard
500 ppm und mehr	Deadly concentrations

Konzentrationstabelle nur im Querformat sichtbar.

Erste Hilfe

1. Get people out of the danger zone:

To avoid further exposure, move to fresh air immediately.

2. Keep the airways clear:

If the person affected is unconscious, they should be placed in the recovery position and their airways must be kept clear.

3. Fresh air and tranquillity:

Reassure those affected and leave them alone. Fresh air can help alleviate symptoms such as dizziness and nausea.

4. Call the emergency doctor:

4. Call the emergency doctor: Severe symptoms such as shortness of breath, loss of consciousness or severe irritation require emergency medical attention.

5. Resuscitation if necessary:

If the person is not breathing, start cardiopulmonary resuscitation immediately and wait for the emergency doctor.

Bei Unbeabsichtigter Freisetzung

1. Cordon off the danger zone:

Evacuate the area immediately and block access to unauthorised persons. Ethylene oxide is explosive and toxic.

2. Ventilation:

Thoroughly ventilate the affected area to reduce the concentration of ethylene oxide in the air.

3. Avoid ignition sources:

Remove any sparks, open flames or hot surfaces from the area to prevent an explosion.

4. Stop leakage:

If safe to do so, close the source of the release (e.g. valve) or reduce the pressure to stop the leak.

5. Make an emergency call:

Alert the fire brigade or emergency services, especially if the leak is large or difficult to control.

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Ethylenoxide C2H40

Ethylene oxide (C2H40) and its properties

Gasmessfühler