DGR Class 2 — Gases

DGR Class 2 — Gases is the IATA Dangerous Goods Regulation classification for all gaseous materials transported by air, divided into three divisions: Division 2.1 (flammable gases), Division 2.2 (non-flammable, non-toxic gases), and Division 2.3 (toxic gases). These materials require specific packaging, marking, labeling, and shipping procedures in compliance with IATA Dangerous Goods Regulations (DGR). Flammable gases can ignite when mixed with 13% or less air by volume, non-flammable gases may present asphyxiation or oxidizing hazards, and toxic gases are known or presumed to be toxic or corrosive to people with an LC50 value equal to or less than 5,000 mL/m3 (ppm).

A Lufthansa Cargo shipment on AWB 020-12345678 carries hydrogen gas cylinders classified as Division 2.1 flammable gases, requiring red hazard labels with flame symbols and specific packing instructions. A FedEx Express medical shipment on AWB 023-87654321 contains oxygen cylinders for medical use under Division 2.2, with each cylinder not exceeding 5 kg gross weight, shipped from Miami International Airport (MIA) to Frankfurt Airport (FRA).

• Class 2
• flammable gases cargo
• non-flammable gases
• toxic gases air freight

What are the three divisions of DGR Class 2 — Gases and their specific criteria?

Division 2.1 covers flammable gases, Division 2.2 covers non-flammable and non-toxic gases, and Division 2.3 covers toxic gases. Division 2.1 gases can ignite when mixed with 13% or less air by volume or have a flammable range determined by tests. Division 2.3 gases have an LC50 value equal to or less than 5,000 mL/m3 (ppm) and are known or presumed toxic or corrosive to people.

Which carriers prohibit DGR Class 2 Division 2.3 toxic gases in their air freight services?

UPS Global Freight Forwarding prohibits Division 2.3 Toxic Gases in their dangerous goods shipments through UPS Air Freight Services. Carriers often have specific operator variations that restrict or prohibit certain gas divisions, so shippers must verify acceptance policies with each airline before tendering Class 2 dangerous goods shipments.