Class 2.2 Non-Flammable, Non-Toxic Gases

General Information:

Class 2.2 Non-Flammable Non-Toxic gases are neither flammable nor toxic, but they are still stored under pressure in cylinders or tanks, which can make them hazardous if handled incorrectly. There is also a potential risk for asphyxiation. These gases are often used for industrial, medical or refrigeration purposes.

Due to the nature in which Non-Flammable Non-Toxic Gases (Class 2.2) must be stored, they are not assigned Packing Groups.

Main Hazards:

• May cause asphyxiation in confined spaces.
• Liquefied gases may cause frostbite.
• Liquefied oxygen may cause substances it contacts to become brittle.
• May support combustion.

Examples:

• Carbon dioxide found in soft drink dispensing machines.
• Oxygen for hospitals and oxy-acetylene welding.
• Compressed air.
• Compressed nitrogen and argon for welding.