ADR hazard number 539
Hazard identification number 539 on the orange plate: flammable organic peroxide.
Printed in the upper half of the orange-coloured plate above the UN number, 539 identifies a flammable organic peroxide. This is one of the figure combinations that 5.3.2.3.1 gives a special meaning, read as a whole rather than figure by figure.
| 5 | oxidizing effect: the substance intensifies fire |
|---|---|
| 3 | flammable liquid (vapours) or gas, or a self-heating liquid |
| 9 | risk of a spontaneous violent reaction (by the nature of the substance: explosion, disintegration or polymerization with much heat or flammable and/or toxic gases released) |
Note. 5.3.2.3.1 lists 539 among the combinations with a special meaning, so read it as a whole from the 5.3.2.3.2 list; the per-figure reading in digits[] does not fully apply. Number and meaning pairing checked against a second text extraction of the list.
Refers to: 5.3.2.3.1; 5.3.2.2.3; Table A column (20).
Carried by 4 Table A entries
UN 3109 · UN 3110 · UN 3119 · UN 3120
Source: ADR 2025 (ECE/TRANS/352), Volume II, section 5.3.2.3.2, 539, page 268.
Paraphrase in FreightUtils' own words, not the official text. Not yet reviewed.
ADR 2027 amendments (accepted, applying from 1 January 2027) are not yet reflected on this page.