When we talk about dangerous goods in Australia, Class 2.2 refers to non-flammable, non-toxic gases. These include common industrial gases like nitrogen, carbon dioxide (CO₂), compressed air and refrigerant gases. While they don’t burn or poison you directly, they’re still dangerous due to pressure hazards, asphyxiation risks, or chemical instability under certain conditions.
These gases are widely used across various industries from food and beverage to healthcare, welding and manufacturing. If your business stores, transports, or exports these types of gases, understanding your responsibilities under Australian and international regulations is key.
Examples of Class 2.2 Gases
Some common examples include:
- Carbon dioxide (UN1013) – used in carbonated drinks, extinguishers, and packaging
- Nitrogen (UN1066) – often used for blanketing or cooling
- Compressed air (UN1002) – used in tools or machinery
- Refrigerant gases like R-134a or R-410A used in HVAC systems and cold chain logistics
Even though they aren’t flammable or toxic, they can displace oxygen and pose serious hazards in confined spaces.
Key Hazards of Class 2.2 Gases
Don’t be fooled by the “non-flammable” label, these gases still come with risks:
- Pressure-related hazards – stored in high-pressure cylinders that can become projectiles if damaged
- Asphyxiation risk – especially in enclosed spaces, as gases like nitrogen can displace breathable air
- Cryogenic burns – some non-flammable gases are stored at extremely low temperatures and can cause severe skin damage
Labelling and Packaging Requirements in Australia
If you’re exporting from Australia or even transporting domestically, you must comply with both the ADG Code and IATA or IMDG rules, depending on whether it’s going by road, air or sea.
For Class 2.2 gases, the standard green label with the gas cylinder symbol is required.
Cylinders must:
- Have correct UN numbers and proper shipping names
- Be packaged in certified, pressure-rated containers
- Be secured upright during transport
Don't forget, incorrect labelling or documentation can result in shipment delays, fines, or even rejected exports.
Exporting Class 2.2 Gases from Australia
If you’re sending these gases internationally, you’ll need:
- Dangerous Goods certification (IATA or IMDG)
- DG Declaration
- Packaging that meets international performance standards
Just because Class 2.2 gases aren’t flammable or toxic doesn’t mean they’re harmless. Treat them with the same care as any other class of dangerous goods. Whether you’re moving goods locally or exporting overseas, getting the documentation and packaging right is not just good practice, it’s the law.
If you need help with your Class 2.2 shipments, DG Solutions Australia is here to make dangerous goods easy. Reach out today and let’s keep your goods moving, safely and legally.