ADR hazard number 446

Hazard identification number 446 on the orange plate: toxic flammable solid carried molten at an elevated temperature.

Printed in the upper half of the orange-coloured plate above the UN number, 446 identifies a toxic flammable solid carried molten at an elevated temperature. 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.

Digit by digit
4flammable solid, or a self-heating solid
4repeated 4: doubling a figure means that hazard (flammable solid) is intensified
6toxic, or a risk of infection

Note. 5.3.2.3.1 lists 446 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 1 Table A entry

UN 2447

Source: ADR 2025 (ECE/TRANS/352), Volume II, section 5.3.2.3.2, 446, page 268.

Paraphrase in FreightUtils' own words, not the official text. Not yet reviewed.

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