Colourless, tasteless, odourless, and nontoxic, nitrogen is virtually inert under most conditions. It makes up 78% of the air on earth. Air separation plants extract nitrogen from liquid air in large quantities. The gas turns into a liquid at -195.2°C (-320.4°F).
Supply Options
| Nitrogen Product | Concentration | Supply Options |
|---|---|---|
| Industrial Nitrogen Gas | >99.99% v/v | Mini and Large gas cylinders |
| High Purity Nitrogen Gas | >99.999% v/v | Mini and Large gas cylinders |
| Medical Nitrogen Gas | >99.999% v/v | Mini and Large gas cylinders |
| Liquid Nitrogen | >99.999% v/v | Liquid canisters Liquid ranger and bowser |
Uses
The inertness of nitrogen makes it useful in applications in chemical and food industries, such as blanketing, purging, and sparging. It is used to remove oxygen from industrial processes or protect them from it.
Electronics manufacturers use nitrogen as an inerting agent, while laboratories use nitrogen as a carrier, zero, or balancing gas. The metal industry uses nitrogen for welding, soldering, and brazing. Nitrogen is also used to pressurise liquid propellants in aerosol cans. MAP (Modified Atmosphere Packaging) extends the shelf life of food by using nitrogen as a preservation agent. The gas is also used to preserve historical documents.
In liquid form, nitrogen is used for quick freezing, preserving food for transport, storing biological materials, cryosurgery, and grinding plastics and rubber. Nitrogen gas mixtures are also commonly used in fire extinguishers and fertilisers.
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