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Dangerous goods classUpdated October 15, 2025

Class 5 — Oxidizing substances and organic peroxides

Supports combustion even without atmospheric oxygen; 5.2 thermally unstable.

The Class 5 — Oxidizing substances and organic peroxides of the UN Model Regulations is subject to specific rules in road transport (ADR), sea freight (IMDG) and air freight (IATA DGR). This article summarises the key transport requirements, example substances and labelling.

UN class
5
Examples
5.1: ammonium nitrate, peroxides. 5.2: organic peroxides (BPO, MEKP).
Label
Gelb mit Flammensymbol über Kreis

01Typical goods and risks

Examples: 5.1: ammonium nitrate, peroxides. 5.2: organic peroxides (BPO, MEKP).

Risks: Supports combustion even without atmospheric oxygen; 5.2 thermally unstable.

Before every shipment, conduct a risk assessment for the specific packaging, loading and routing combination — especially for tunnels, ferry passages and transit countries with special regimes.

02ADR — road transport

Temperaturkontrolle bei 5.2; getrennt von brennbaren Stoffen stauen.

Required: transport document per 5.4.1 ADR, UN packaging codes, hazard labels and orange warning panel on the vehicle. Drivers need the ADR certificate (basic and, if applicable, specialisation courses).

03IMDG — sea freight

IMDG, Stauung "away from heat sources".

Notes such as "Stow away from living quarters" or the segregation group are defined in IMDG Code Part 7. Mandatory document: Dangerous Goods Declaration. Containers must be CSC-certified and stowed per the CTU Code.

04IATA — air freight

Viele 5.2 CAO oder verboten; Temperaturlimits beachten.

IATA DGR is updated annually (currently 66th edition 2025). Operator variations (OV) of individual airlines are binding. Shipper's declaration is mandatory and often available electronically (eDG).

Frequently asked questions

Can Class 5 — Oxidizing substances and organic peroxides be transported by air?

Viele 5.2 CAO oder verboten; Temperaturlimits beachten. Always check the current IATA DGR edition and operator variations.

Topics

Gefahrgut Klasse 5OxidationsmittelPeroxidAmmoniumnitrat

Further resources