General
Nitrogen is colourless, odourless, non-toxic and non-flammable. It makes up 78% by volume of the atmosphere. Nitrogen in gaseous form is transported in cylinders. Liquid Nitrogen is packed in cyrogenic cylinders that are vacuum insulated.

Nitrogen has two key properties: 1) It is almost totally inert and intensely cold in liquid form. 2) Under normal conditions, Nitrogen is chemically inactive. It prevents most reactions and combustion from taking place.

Properties
• It is inert and non-combustible.
• It is intensely cold in liquid phase.