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Argon Asphyxiation

Argon in its liquid or gas state can't be smelled, tasted or seen. It is not toxic to humans, but it will displace oxygen and, if inhaled in confined spaces, cause asphyxiation. It is produced by partially distilling liquid air and separating out the liquid nitrogen and oxygen. Since there is an industrial need for making liquid nitrogen and oxygen, and argon is a byproduct of this process, it is very cheap and available for use in many things.

  1. Human Compatibility

    • When it comes to risk versus benefit analyses in the use of argon, benefits win. Because argon is a poor heat conductor, it is ideal as a filler in double glazed windows. It is used to preserve food and wine, and it is invaluable in the medical field. You are surrounded by argon: It's in light bulbs, electrical signs and car tires. It's in the atmosphere and as natural as the air you breathe.

    Uses

    • Argon is used in welding processes and by incandescent bulb manufacturers. Museums use it to protect documents, because oxidation can be damaging. Winemakers use it to displace oxygen in the top of wine barrels to prevent wine oxidation, which would turn wine into vinegar as it ages. The poultry industry uses it to kill chickens because it's more humane than electric baths. There are many uses for argon, especially since it extends shelf life due to oxidation prevention.

    Hazards

    • Argon is 39 percent denser than oxygen and, if breathed in confined places, will asphyxiate. It is especially dangerous working in closed areas. Welders who use it as an inert gas when welding inside tanks, for example, must be very cautious. Students working with argon in chemistry labs must follow protocols very carefully.

    Symptoms

    • The University of Arizona, in its Chemical Safety Bulletins, lists symptoms of asphyxiation as "air hunger, fatigue, reduced visual acuity, tunnel vision, dizziness, headache, numbness and tingling of extremities, poor judgment, memory loss and decreased ability to escape."

    Prevention/Solution

    • According to the University of Arizona's Risk Management & Safety program, people should always know the hazards of any gas or chemicals they are working with in advance. Argon needs to be stored in well-ventilated places. Work areas should be well ventilated. The equipment used with argon should be kept in good repair. Anyone experiencing any of the symptoms listed above should get help immediately.

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