Dangerous Goods

Dangerous Goods Class 2: Gases

Dangerous goods Class 2 (Gases): Substances which at 50°C have a vapor pressure greater than 300 kPa, or are completely gaseous at 20°C at standard pressure.

Class: 2
Name: Gases
Label: Red (2.1), Green (2.2), White (2.3), Flame (2.1), Gas cylinder (2.2), Skull (2.3)
Packing groups: N/A - Not applicable to gases

Substances which at 50°C have a vapor pressure greater than 300 kPa, or are completely gaseous at 20°C at standard pressure.

Air transport: restricted

Sea transport: allowed

Class 2 hazards

Flammability
Asphyxiation
Oxidizing
Toxicity
Pressure

Class 2 divisions

2.1 Flammable Gases: Gases which are ignitable at 20°C and standard pressure in a mixture with air Examples: Propane, Butane, Acetylene, Hydrogen, LPG.
2.2 Non-Flammable, Non-Toxic Gases: Gases which are asphyxiant or oxidizing Examples: Nitrogen, Carbon dioxide, Oxygen, Helium, Argon, Compressed air.
2.3 Toxic Gases: Gases which are toxic or corrosive Examples: Chlorine, Ammonia, Hydrogen sulfide, Carbon monoxide, Phosgene.

Class 2 examples

LPG
Aerosols
Fire extinguishers
Oxygen cylinders
Refrigerant gases

Special requirements for Class 2

Cylinders must meet pressure vessel regulations
Valve protection required
Temperature controls for some gases
Ventilation requirements for cargo holds
Maximum fill limits apply

Segregation of Class 2

2.1 away from oxidizers
2.3 requires separate stowage

Frequently asked questions

What is dangerous goods Class 2?

Class 2 covers gases. Substances which at 50°C have a vapor pressure greater than 300 kPa, or are completely gaseous at 20°C at standard pressure.

Can Class 2 goods travel by air?

restricted

Can Class 2 goods travel by sea?

allowed