UN 3374 — ADR 2025 Table A: class 2, classification code 2F, packing group —, labels 2.1, special provisions 662, limited quantity 0, excepted quantity E0, packing instructions P200, transport category 2, tunnel restriction code (D), hazard identification number —.

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

Table A — ADR 2025 (ECE/TRANS/352), UN 3374
(1) UN No.	3374
(2) Name and description	ACETYLENE, SOLVENT FREE
(3a) Class	2
(3b) Classification code	2F
(4) Packing group	—
(5) Labels	2.1
(6) Special provisions	662
(7a) Limited quantities	0
(7b) Excepted quantities	E0
(8) Packaging: packing instructions	P200
(9a) Packaging: special packing provisions	—
(9b) Packaging: mixed packing provisions	MP9
(10) Portable tanks and bulk containers: instructions	—
(11) Portable tanks and bulk containers: special provisions	—
(12) ADR tank: tank code	—
(13) ADR tank: special provisions	—
(14) Vehicle for tank carriage	—
(15) Transport category (Tunnel restriction code)	2 (D)
(16) Special provisions for carriage: packages	—
(17) Special provisions for carriage: bulk	—
(18) Special provisions for carriage: loading, unloading and handling	CV9 CV10 CV36
(19) Special provisions for carriage: operation	S2 S20
(20) Hazard identification No.	—

ADR 2027 (accepted) — no change for UN 3374

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 (D): in tanks, Prohibited in D, E; in other carriage, Prohibited in D, E. Categories A, B, C. (ADR 8.6.4; from the ADR table itself)
Small-load exemption: Transport category 2: at most 333 per transport unit under 1.1.3.6, counted ×3 toward the 1,000-point limit (ADR 1.1.3.6.3; from the ADR table itself)
Labels: Labels: model 2.1 (Gases: flammable gases) (ADR 5.2.2.2.2, label model No. 2.1; 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)
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 S2: Flammable liquids/gases: no ordinary portable lights in closed load compartments; FL heaters off during loading; earth FL vehicles before filling. Operation provision S20: Chapter 8.4 supervision applies above 10 000 kg in packages, or above 3 000 litres in tanks. (ADR 7.5.11, CV9, 7.5.11, CV10, 7.5.11, CV36, 8.5, S2, 8.5, S20; 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 3374Class 2 — Gases