Class 2 Dangerous Goods – Gases

Dangerous Goods which are classed as Gases are defined by dangerous goods regulations as substances which have a vapour pressure of 300 kPa or greater at 50°c or which are completely gaseous at 20°c at standard atmospheric pressure, and items containing these substances.

The class encompasses compressed gases, liquefied gases, dissolved gases, refrigerated liquefied gases, mixtures of one or more gases with one or more vapours of substances of other classes, articles charged with a gas and aerosols.


2.1: Flammable gases

2.2: Non-flammable, non-toxic gases

2.3: Toxic gases

Reason For Regulation

Gases are capable of posing serious hazards due to their flammability, potential as asphyxiants, ability to oxidize and/or their toxicity or corrosiveness to humans.

Commonly Transported Gases

  1. Aerosols
  2. Compressed air
  3. Hydrocarbon gas-powered devices
  4. Fire extinguishers
  5. Gas cartridges
  6. Fertilizer ammoniating solution
  7. Insecticide gases
  8. Refrigerant gases
  9. Lighters
  10. Acetylene / Oxyacetylene
  11. Carbon dioxide
  12. Helium / helium compounds
  13. Hydrogen / hydrogen compounds
  14. Oxygen / oxygen compounds
  15. Nitrogen / nitrogen compounds
  16. Natural gas
  17. Oil gas
  18. Petroleum gases
  19. Butane
  20. Propane
  21. Ethane
  22. Methane
  23. Dimethyl ether
  24. Propene / propylene
  25. Ethylene

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