ADR hazard number 665
Hazard identification number 665 on the orange plate: highly toxic substance that is oxidizing (fire-intensifying).
Printed in the upper half of the orange-coloured plate above the UN number, 665 identifies a highly toxic substance that is oxidizing (fire-intensifying). A repeated figure means that hazard is intensified.
| 6 | toxic, or a risk of infection |
|---|---|
| 6 | repeated 6: doubling a figure means that hazard (toxic) is intensified |
| 5 | oxidizing 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 5 Table A entries
UN 1510 · UN 3086 · UN 3122 · UN 3387 · UN 3388
Source: ADR 2025 (ECE/TRANS/352), Volume II, section 5.3.2.3.2, 665, page 268.
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.