ADR hazard number 22
Hazard identification number 22 on the orange plate: refrigerated liquefied gas that is asphyxiant.
Printed in the upper half of the orange-coloured plate above the UN number, 22 identifies a refrigerated liquefied gas that is asphyxiant. 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.
| 2 | gas given off, either because of pressure or through a chemical reaction |
|---|---|
| 2 | repeated 2: doubling a figure means that hazard (gas given off) is intensified |
Note. 5.3.2.3.1 lists 22 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 9 Table A entries
UN 1913 · UN 1951 · UN 1963 · UN 1970 · UN 1977 · UN 2187 · UN 2591 · UN 3136 · UN 3158
Source: ADR 2025 (ECE/TRANS/352), Volume II, section 5.3.2.3.2, 22, 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.