ADR hazard number 223

Hazard identification number 223 on the orange plate: refrigerated liquefied gas that is flammable.

Printed in the upper half of the orange-coloured plate above the UN number, 223 identifies a refrigerated liquefied gas that is flammable. A repeated figure means that hazard is intensified.

Digit by digit
2gas given off, either because of pressure or through a chemical reaction
2repeated 2: doubling a figure means that hazard (gas given off) is intensified
3flammable liquid (vapours) or gas, or a self-heating liquid

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 6 Table A entries

UN 1038 · UN 1961 · UN 1966 · UN 1972 · UN 3138 · UN 3312

Source: ADR 2025 (ECE/TRANS/352), Volume II, section 5.3.2.3.2, 223, 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.