Skip to main content

Cryogenic Liquids

ATTENTION: Use of liquid nitrogen requires online training and the passing of a liquid nitrogen quiz (located on SOLE). Contact 304-293-0952 for more information.

Defining Cryogenic Liquids

Cryogenic liquids (also known as cryogens) are gases at normal temperatures and pressures. However, at low temperatures, they are in their liquid state. These liquids are extremely cold and have boiling points less than -150°C (- 238°F). Even the vapors and gases released from cryogenic liquids are very cold. They often condense the moisture in air, creating a highly visible fog. Different cryogens become liquids under different conditions of temperature and pressure, but all have two properties in common; extremely cold and small amounts of liquid can expand into very large volumes of gas. Everyone who works with cryogenic liquids must be aware of their hazards and know how to work safely with them.

Types of Cryogenic Liquids

Each cryogenic liquid has its own specific properties but most cryogenic liquids can be placed into one of three groups:

Personal Protective Equipment to be worn

Handling Cryogenics Liquids

Storing Cryogenic Liquids

Hazards of Cryogenic Liquids

General Hazards of Cryogenic Liquids

Office of the Vice President for Strategic Initiatives