ADR hazard number 239
Hazard identification number 239 on the orange plate: flammable gas able to lead spontaneously to a violent reaction.
Printed in the upper half of the orange-coloured plate above the UN number, 239 identifies a flammable gas able to lead spontaneously to a violent reaction.
| 2 | gas given off, either because of pressure or through a chemical reaction |
|---|---|
| 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. 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 12 Table A entries
UN 1001 · UN 1010 · UN 1041 · UN 1060 · UN 1081 · UN 1085 · UN 1086 · UN 1087 · UN 1860 · UN 1959 · UN 2200 · UN 2452
Source: ADR 2025 (ECE/TRANS/352), Volume II, section 5.3.2.3.2, 239, page 267.
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.