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Cryogen

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A cryogen is a substance or mixture of substances used to produce very low temperatures. Common cryogens include liquid nitrogen, liquid helium and carbon dioxide.[1]

Cryogens boil at temperatures below about 110 kelvin (roughly -217 Fahrenheit).[2]

References

  1. http://www.ilpi.com/msds/ref/cryogen.html
  2. http://www.copper.org/education/c-facts/c-electrical.html
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