Azote liquide : un guide complet sur la sécurité, les utilisations et ...
Liquid nitrogen is the liquefied form of nitrogen gas (N2), making up about 78% of the Earth''s atmosphere. It is colorless, odorless, and extremely cold, with a boiling point of -196°C (-321°F). When exposed to the environment, liquid nitrogen rapidly evaporates, expanding to 695 times its liquid volume.