UN 1067

DINITROGEN TETROXIDE (NITROGEN DIOXIDE)

UN 1067 — ADR 2025 Table A: class 2, classification code 2TOC, packing group —, labels 2.3 +5.1 +8, special provisions —, limited quantity 0, excepted quantity E0, packing instructions P200, transport category 1, tunnel restriction code (C/D), hazard identification number 265.

UNECE ADR 2025, ECE/TRANS/352 · checked 2026-10-28

Table A — ADR 2025 (ECE/TRANS/352), UN 1067
(1) UN No.1067
(2) Name and descriptionDINITROGEN TETROXIDE (NITROGEN DIOXIDE)
(3a) Class2
(3b) Classification code2TOC
(4) Packing group—
(5) Labels2.3 +5.1 +8
(6) Special provisions—
(7a) Limited quantities0
(7b) Excepted quantitiesE0
(8) Packaging: packing instructionsP200
(9a) Packaging: special packing provisions—
(9b) Packaging: mixed packing provisionsMP9
(10) Portable tanks and bulk containers: instructionsT50
(11) Portable tanks and bulk containers: special provisionsTP21
(12) ADR tank: tank codePxBH(M)
(13) ADR tank: special provisionsTU17 TA4 TT9
(14) Vehicle for tank carriageAT
(15) Transport category (Tunnel restriction code)1 (C/D)
(16) Special provisions for carriage: packages—
(17) Special provisions for carriage: bulk—
(18) Special provisions for carriage: loading, unloading and handlingCV9 CV10 CV36
(19) Special provisions for carriage: operationS14
(20) Hazard identification No.265

ADR 2027 (accepted) — no change for UN 1067

ADR 2027 was accepted: depositary notification C.N.395.2026 (9 October 2026) records no objection to the amendments proposed by C.N.252.2026. It applies from 1 January 2027, and ADR 2025 may still be applied until 30 June 2027 (1.6.1.1). (C.N.395.2026)

ADR 2027: no Table A change for this entry (checked against ECE/TRANS/WP.15/274, Add.1 and Corr.1). Other parts of ADR 2027 may still affect its carriage.

ADR 2025 remains the edition FreightUtils serves and the one that applies until ADR 2027 takes effect on 1 January 2027; after that, ADR 2025 may still be applied until 30 June 2027 (1.6.1.1).

All ADR 2027 Table A changes →Check a list of UN numbers →

In plain words

Tunnels
Tunnel code (C/D): in tanks, Prohibited in C, D, E; in other carriage, Prohibited in D, E. Tanks: A, B. Packages: A, B, C. (ADR 8.6.4; from the ADR table itself)
Small-load exemption
Transport category 1: at most 20 per transport unit under 1.1.3.6, counted ×50 toward the 1,000-point limit (ADR 1.1.3.6.3; from the ADR table itself)
Labels
Labels: model 2.3 (Gases: toxic gases), model 5.1 (Oxidizing substances), model 8 (Corrosive substances) (ADR 5.2.2.2.2, label model No. 2.3, 5.2.2.2.2, label model No. 5.1, 5.2.2.2.2, label model No. 8; paraphrase, not yet reviewed)
Packing
Packing instruction P200: Gases in cylinders, tubes, pressure drums and bundles: closure, test pressure, filling limits, periodic inspection and per-gas provisions. Mixed packing provision MP9: May share a combination outer packaging with other Class 2 goods, with other classes that permit it, or with non-ADR goods. (ADR 4.1.4.1, P200, 4.1.10.4, MP9; paraphrase, not yet reviewed)
Tanks
Portable tank instruction T50: Per-gas portable tank table for non-refrigerated liquefied gases and chemicals under pressure (UN 3500–3505): MAWP, openings, relief, filling. Portable tank provision TP21: Shell at least 8 mm thick; hydraulic test and internal inspection at least every 2.5 years. Tank code PxBH(M): ADR tank code for Class 2 gases: liquefied/dissolved gas tank, X (test pressure from 4.3.3.2.5), openings B, hermetically closed, suffix (M). — P: tank, battery-vehicle or MEGC for liquefied or dissolved gases; X: the minimum relevant test pressure taken from the table in 4.3.3.2.5 for the gas; B: tank filled or discharged from the bottom through openings having 3 closures; or a battery-vehicle/MEGC with openings below the liquid surface or for compressed gases; H: hermetically closed (see 1.2.1); (M): the substance may also be carried in battery-vehicles or MEGCs (3.2.1, column (12)) Tank provision TU17: Only to be carried in battery-vehicles or MEGCs whose elements are receptacles. Tank provision TA4: Conformity assessment under 1.8.7 by the competent authority or an inspection body to 1.8.6.3 accredited to EN ISO/IEC 17020:2012 type A. Tank provision TT9: Inspections and tests, including supervision of manufacture, under 1.8.7 by the competent authority or a type A accredited inspection body. Vehicle for tank carriage: AT — Tank vehicle for dangerous goods that is not EX/III, FL or a MEMU: tanks over 1 m³ / 3 m³, or battery-vehicle over 1 m³. (ADR 4.2.5.2.6, portable tank instruction T50, 4.2.5.3, TP21, 4.3.3.1.1, tank code PxBH(M), 4.3.5, TU17, 6.8.4 (c), TA4, 6.8.4 (d), TT9, 9.1.1.2, AT vehicle; paraphrase, not yet reviewed)
Carriage
Loading provision CV9: Do not throw packages or subject them to impact; stow receptacles so they cannot tip over or fall. Loading provision CV10: Cylinders lie along or across the vehicle axis (across at the front wall); stable or secured ones may stand; flat ones must be wedged. Loading provision CV36: Prefer open or ventilated units; if closed, isolate the cab from the load and mark doors "WARNING NO VENTILATION OPEN WITH CAUTION" (≥ 25 mm). Operation provision S14: Chapter 8.4 vehicle supervision applies for any amount of these substances. (ADR 7.5.11, CV9, 7.5.11, CV10, 7.5.11, CV36, 8.5, S14; paraphrase, not yet reviewed)

Assembled from FreightUtils' meanings of the Table A codes, not the official text. A statement marked “not yet reviewed” has not yet been checked against ADR by a person.

Class 2 — Gases
UN 1067Class 2 — Gases
Packing Group
N/A
Not applicable
Classification Code
2TOC
Tunnel Code
(C/D) meaning →
Code governing tunnel passage
Transport Category
1
For the 1,000-point rule (0 = highest restriction)
Hazard ID No.
265
Kemler code
Limited Quantity
0
Max per inner package for LQ relief
Excepted Quantity
E0
EQ code for excepted quantity relief
Thresholds — why, not just the verdict
Transport Category
Category 1
×50 points per kg/L — up to 20 kg/L of this substance alone stays under the 1,000-point threshold
Per-substance max
20 kg/L
Per-substance maximum for 1.1.3.6 relief (1.1.3.6.3)
Limited Quantity
Not permitted
No limited-quantity relief for this entry (Chapter 3.4)
Excepted Quantity
E0
No excepted-quantity relief for this entry (Chapter 3.5)
Tunnel Code
Governs which tunnel categories the load may pass
Hazard Labels Required
Label 2.3Label 5.1Label 8

These labels must be displayed on packages and vehicle placards in accordance with ADR 2025.

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Other Gases near UN 1067 (Class 2)

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All Class 2 UN numbers →
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📅Data: UNECE ADR 2025 (ECE/TRANS/352), via EU Directive 2008/68/EC. Last verified October 2026

ADR reference data only. Classification is the consignor's legal responsibility. Consult a DGSA for compliance decisions.

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