Name: UN 2421 — NITROGEN TRIOXIDE
Creator: FreightUtils
License: https://creativecommons.org/licenses/by/4.0/

Carriage prohibited by ADR (road)

ADR 2025 Table A lists UN 2421 (NITROGEN TRIOXIDE) as “CARRIAGE PROHIBITED” — it may not be carried by road under ADR. No packing group, transport category, or 1.1.3.6 small-load exemption applies: the entry is banned from carriage, not exempt from it.

UN 2421Class 2 — GasesCarriage prohibited

Packing Group: None; Carriage prohibited — see the verdict above
Classification Code: 2TOC
Tunnel Code: None meaning →; Carriage prohibited — see the verdict above
Transport Category: —; None — the entry may not be carried by road under ADR
Hazard ID No.: —; Kemler code
Limited Quantity: —; Carriage prohibited — see the verdict above
Excepted Quantity: —; Carriage prohibited — see the verdict above