ADR hazard number 90
Hazard identification number 90 on the orange plate: environmentally hazardous substance, or a miscellaneous dangerous substance.
Printed in the upper half of the orange-coloured plate above the UN number, 90 identifies an environmentally hazardous substance, or a miscellaneous dangerous substance. 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.
| 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) |
|---|---|
| 0 | no further hazard: a single figure describes the hazard adequately, so it is followed by zero |
Note. 5.3.2.3.1 lists 90 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 16 Table A entries
UN 1841 · UN 1931 · UN 1941 · UN 1990 · UN 2211 · UN 2212 · UN 2315 · UN 2590 · UN 2969 · UN 3077 · UN 3082 · UN 3151 · UN 3152 · UN 3314 · UN 3432 · UN 3509
Source: ADR 2025 (ECE/TRANS/352), Volume II, section 5.3.2.3.2, 90, page 269.
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.