ADR Class 6.1 Toxic Substances

Toxic substances — all 522 UN numbers in ADR 2025 Table A

ADR 2025

Class 6.1 covers substances known, by experience or presumed from animal tests, to be liable to cause death or serious injury to health if swallowed, inhaled or absorbed through the skin. The packing group follows the degree of toxicity: I highly toxic, II toxic, III slightly toxic.

The list below gives every UN number that ADR 2025 Table A (Chapter 3.2) assigns to Class 6.1, with its proper shipping name and packing groups. A UN number with more than one row in Table A (for example one row per packing group or per physical state) is listed once and marked with its row count; its page shows every row. Open a UN number for its classification code, labels, tunnel restriction code, transport category, limited and excepted quantities and the 1.1.3.6 exemption points. The class of a substance is assigned under ADR Part 2 (Chapter 2.2.61); this list helps you find an entry, it does not classify a product.

Entries marked “not subject to ADR” are listed in Table A but carried outside ADR under the conditions their special provision sets; entries marked “carriage prohibited” may not be carried at all.

Class 6.1 UN numbers (522)

Other ADR classes

Class 1 · ExplosivesClass 2 · GasesClass 3 · Flammable LiquidsClass 4.1 · Flammable SolidsClass 4.2 · Spontaneously CombustibleClass 4.3 · Dangerous When WetClass 5.1 · Oxidizing SubstancesClass 5.2 · Organic PeroxidesClass 6.2 · Infectious SubstancesClass 7 · Radioactive MaterialClass 8 · Corrosive SubstancesClass 9 · Miscellaneous