Your Liquid Nitrogen Safety Resource Center
- CGA P-76, Hazards of Oxygen-Deficient Atmospheres
- CGA SA-29, Safety Alert, Hazards of Liquid Nitrogen in Near-Consumer Applications
- CGA TM-3, eLearning: Safe Handling of Cryogenic Liquids in Portable Containers
- CGA P-12, Safe Handling of Cryogenic Liquids
- CGA P-9, The Inert Gases: Argon, Nitrogen, and Helium
Product Information: Nitrogen
Nitrogen makes up more than 75% of the atmosphere. It is a colorless, odorless, tasteless, nontoxic, almost totally inert gas, and it is colorless as a liquid. Nitrogen is nonflammable, will not support combustion, and is not life supporting. It combines with some of the more active metals such as lithium and magnesium to form nitrides, and at high temperatures it will also combine with hydrogen, oxygen, and other elements.
Liquid nitrogen is extremely cold (–320 °F / –196 °C) and can quickly burn or freeze body tissue. It rapidly turns into a gas and expands rapidly at room temperature. For example, one cubic foot of liquid can expand into 700 cubic feet of gas.