Type at least 2 characters to search 2,336 ADR 2025 dangerous goods entries
GET /api/adr?un=1203What is ADR?
ADR (Accord Dangereux Routier) is the European Agreement concerning the International Carriage of Dangerous Goods by Road. It governs how hazardous materials must be classified, packaged, labelled, and transported across road networks in the UK, EU, and 50 other signatory countries.
Each dangerous substance is assigned a UN number — a 4-digit code that uniquely identifies it across all transport modes (road, rail, sea, and air). The ADR Dangerous Goods List (Table A) sets out the rules for each UN number: which hazard class it belongs to, what labels must be displayed, packing group requirements, quantity limits, and tunnel restrictions.
ADR is updated every two years. This tool uses the ADR 2025 dataset, published by the United Nations Economic Commission for Europe (UNECE).
How to read an ADR entry
| Field | What it means |
|---|---|
| UN Number | Unique 4-digit identifier for the substance (e.g. 1203 = Petrol/Gasoline) |
| Proper Shipping Name | The official name that must appear on packages and transport documents |
| Class | Primary hazard category (1=Explosives, 2=Gases, 3=Flammable liquids, 4=Flammable solids, 5=Oxidising, 6=Toxic, 7=Radioactive, 8=Corrosive, 9=Miscellaneous) |
| Classification Code | Sub-category within the class (e.g. F1 = flammable liquid without subsidiary hazard) |
| Packing Group | Degree of danger: I (high), II (medium), III (low). Some substances have no packing group. |
| Labels | Hazard warning labels that must be displayed on packages and vehicles |
| Special Provisions | Numbered exemptions or additional requirements that modify the standard rules |
| Limited Quantity | Maximum net quantity per inner packaging for limited quantity relief from full ADR requirements |
| Transport Category | Determines quantity thresholds for the 1,000-point rule (exemptions from full ADR for small shipments) |
| Tunnel Restriction Code | Which road tunnels the substance may pass through (A=no restriction, B/C/D/E = increasing restrictions) |
| Hazard ID Number | The Kemler code displayed on orange plates on vehicles — first digit indicates primary hazard, second subsidiary |