ADR hazard number 225

Hazard identification number 225 on the orange plate: refrigerated liquefied gas that is oxidizing (fire-intensifying).

Printed in the upper half of the orange-coloured plate above the UN number, 225 identifies a refrigerated liquefied gas that is oxidizing (fire-intensifying). 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
5oxidizing effect: the substance intensifies fire

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 4 Table A entries

UN 1003 · UN 1073 · UN 2201 · UN 3311

Source: ADR 2025 (ECE/TRANS/352), Volume II, section 5.3.2.3.2, 225, 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.