LIQUID NITROGEN


Liquid nitrogen is a form of element nitrogen that's cold enough to exist in a liquid state and can be used to many cooling and cryogenic purposes. Because of the severe problems on contact with living tissue, you must wear proper safety gear when handling liquid nitrogen to prevent contact or inhalation of the extremely cold vapour. Cover and insulate skin to avoid exposure. It boils so rapidly, so that the phase transition from liquid to gas can generate a lot of pressure very quickly.


Do not enclose liquid nitrogen in a sealed container, as this may result in it bursting or an explosion. Adding large quantities of nitrogen to the air reduces the relative amount of oxygen, which may result in an asphyxiation risk. Cold nitrogen gas is heavier than air, so the risk is greatest near the ground. Use liquid nitrogen in a well-ventilated area. Liquid nitrogen containers may accumulate oxygen that is condensed from the air. As the nitrogen evaporates, there's a risk of violent oxidation of organic matter.


Liquid Nitrogen Uses

  1. The freezing and transporting of food products
  2. The cryopreservation of biological samples, such as sperm, eggs, and animal genetic samples
  3. Use as a coolant for superconductors, vacuum pumps, and other materials and equipment
  4. Use in cryotherapy to remove skin abnormalities
  5. The shielding of materials from oxygen exposure
  6. The quick freezing of water or pipes to allow work on them when valves are unavailable
  7. A source of extremely dry nitrogen gas
  8. The branding of cattle
  9. The molecular gastronomy preparation of unusual foods and beverages
  10. The cooling of materials for easier machining or fracturing


                Location: Thrissur, Kerala, India

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