Gases — dangerous goods classification
Class 2 splits into flammable (2.1), non-flammable non-toxic (2.2) and toxic (2.3). Cylinders, cartridges, lighters and aerosols all land here.
The mistake this category generates
Gases have no packing group, and lighters and lighter refills are forbidden as cargo on both passenger and cargo aircraft.
Entries (8)
| UN | Proper shipping name | Class | PG | Labels | Air |
|---|---|---|---|---|---|
| UN1950 | Aerosols, flammable | 2.1 | none | FLAMMABLE GAS | pax limited·cargo permitted |
| UN1950 | Aerosols, non-flammable | 2.2 | none | NON-FLAMMABLE GAS | pax limited·cargo permitted |
| UN1057 | Lighters or Lighter refills | 2.1 | none | FLAMMABLE GAS | pax forbidden·cargo forbidden |
| UN1978 | Propane | 2.1 | none | FLAMMABLE GAS | pax forbidden·cargo forbidden |
| UN2037 | Receptacles, small, containing gas | 2.2 | none | NON-FLAMMABLE GAS | pax limited·cargo permitted |
| UN1044 | Fire extinguishers | 2.2 | none | NON-FLAMMABLE GAS | pax limited·cargo permitted |
| UN1072 | Oxygen, compressed(subsidiary 5.1) | 2.2 | none | NON-FLAMMABLE GAS, OXIDIZER | pax forbidden·cargo limited |
| UN1013 | Carbon dioxide | 2.2 | none | NON-FLAMMABLE GAS | pax limited·cargo permitted |
Shipper notes
UN1950 Aerosols, flammable
- Aerosols have no packing group. A flammable propellant — butane, propane, isobutane, DME — makes the article Division 2.1 whatever the payload is.
- Aerosols with a capacity of 1 L or less are the classic limited-quantity case under 49 CFR 173.306, which is what makes ground shipment practical.
UN1950 Aerosols, non-flammable
- Compressed-air dusters and nitrogen-propelled sprays fall here. Many 'canned air' products actually use a flammable HFC/hydrocarbon blend — read the SDS before choosing between the 2.1 and 2.2 entries.
UN1057 Lighters or Lighter refills
- Forbidden on both passenger and cargo aircraft as cargo. Passengers may carry one lighter on their person under a separate provision — that is not a cargo acceptance.
- Lighters must meet the ISO 9994 test requirements before offer for transport.
UN1978 Propane
- Forbidden by air. Cylinders must be DOT-specification and within test date.
UN2037 Receptacles, small, containing gas
- The division follows the gas inside: CO2 and nitrogen cartridges are 2.2, butane and propane cartridges are 2.1 and carry the flammable gas label instead.
UN1044 Fire extinguishers
- Charged with compressed or liquefied gas; must be protected against discharge in transit.
UN1072 Oxygen, compressed
- Oxidiser subsidiary risk. Portable oxygen concentrators without a cylinder are not this entry.
Questions
- What UN number applies to gases?
- Class 2 splits into flammable (2.1), non-flammable non-toxic (2.2) and toxic (2.3). Cylinders, cartridges, lighters and aerosols all land here.
- What do people get wrong about shipping gases?
- Gases have no packing group, and lighters and lighter refills are forbidden as cargo on both passenger and cargo aircraft.
- Which entries does Classify7 encode for gases?
- UN1950 Aerosols, flammable (class 2.1); UN1950 Aerosols, non-flammable (class 2.2); UN1057 Lighters or Lighter refills (class 2.1); UN1978 Propane (class 2.1); UN2037 Receptacles, small, containing gas (class 2.2); UN1044 Fire extinguishers (class 2.2); UN1072 Oxygen, compressed (class 2.2); UN1013 Carbon dioxide (class 2.2)
Classify your actual product
Which of these entries applies depends on the formulation, not the category. Send the product and Classify7 returns the entry with the evidence that selected it — or tells you which measurement it needs first.
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