What is nitrogen used for?

- Feb 28, 2020-

1. Preservation of food

Nitrogen is used for creating a modified atmosphere where is applied along with carbon dioxide for preservation of the fresh of packaged or bulk foods by safeguarding against oxidative damage. Pure nitrogen is also leveled as food additive in the European Union with E number E941.

2. Use of nitrogen in pharmaceuticals

It is extensively used in the pharmaceutical industry. In fact, it is present in every major pharmacological drug class, including antibiotics. As nitrous oxide, it is used as an anesthetic. Besides, cryopreservation also uses nitrogen to preserve sperm, egg, blood various other biological specimens.

3. Application of nitrogen in Manufacturing and construction industry

It finds application in shrink fitting which is now more commonly used than the traditional expansion fitting. The inner part of the metal is cooled by using liquid nitrogen making it to shrink. Upon its insertion, the metal returns to its original size once the temperature is normal giving it a tight fit. It is also used as liquid nitrogen in tunnel construction where the ground is water-soaked for freezing the ground. Liquid nitrogen is pumped into the ground through pipes. When nitrogen is deposited into the soil, it vaporizes eliminating heat from the soil and freezing it.

4. Use of nitrogen in electronics industry

It is used in the CPUs of computers in order to prevent them from heating up. It is widely used in the fire suppression systems for Information Technology (IT) equipment. Nitrogen is also used X-ray detectors

5. Use of nitrogen in stainless steel

Nitrogen finds application as a purging gas in the steel industry. It also finds application as a shield gas for safeguarding technological processes against oxidation. It is used for creating an inert atmosphere for steel casting and vacuum degassing of molten metal.


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