DGR Class 5 — Oxidizers & Organic Peroxides

DGR Class 5 comprises oxidizing substances and organic peroxides that cause or enhance fire, explosion, and combustion hazards. This class is divided into Division 5.1 (oxidizing substances) and Division 5.2 (organic peroxides), with air transport governed by IATA Dangerous Goods Regulations. Airline carriers may refuse shipments if IATA DGR training has not been completed within the previous 24 months.

[Cargo-only flight] A UPS Airlines freighter carries AWB number 406-78901234 containing ammonium nitrate fertilizer (Class 5.1, UN1942) from Louisville SDF to Frankfurt FRA, requiring specialized oxidizer handling procedures and cargo-only aircraft designation. [Temperature-controlled organic peroxide] A FedEx Express shipment moves AWB 023-56789012 containing dibenzoyl peroxide paste (Class 5.2, UN3107) from Memphis MEM to Amsterdam AMS under refrigerated conditions to maintain thermal stability.

• Class 5
• organic peroxides cargo
• oxidizing substances

What are the two divisions within DGR Class 5 oxidizers and organic peroxides?

Division 5.1 covers oxidizing substances and Division 5.2 covers organic peroxides. Division 5.1 materials yield oxygen to cause or enhance combustion of other materials, with solids tested against a 3:7 potassium bromate/cellulose mixture burning time standard. Division 5.2 organic peroxides contain the bivalent -O-O- structure as derivatives of hydrogen peroxide and are thermally unstable substances that may undergo exothermic self-accelerating decomposition.

How often must personnel complete IATA DGR Class 5 training for oxidizers and organic peroxides?

IATA DGR training must be renewed within 24 months of the previous training, and airline carriers may refuse shipments if training has not been completed within this timeframe. DOT rules require all HAZMAT employees to repeat training in its entirety at least every three years.