UN 3168 — ADR 2025 Table A: class 2, classification code 7TF, packing group —, labels 2.3 +2.1, special provisions —, limited quantity 0, excepted quantity E0, packing instructions P201, transport category 1, 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 3168
(1) UN No.	3168
(2) Name and description	GAS SAMPLE, NON-PRESSURIZED, TOXIC, FLAMMABLE, N.O.S., not refrigerated liquid
(3a) Class	2
(3b) Classification code	7TF
(4) Packing group	—
(5) Labels	2.3 +2.1
(6) Special provisions	—
(7a) Limited quantities	0
(7b) Excepted quantities	E0
(8) Packaging: packing instructions	P201
(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)	1 (D)
(16) Special provisions for carriage: packages	—
(17) Special provisions for carriage: bulk	—
(18) Special provisions for carriage: loading, unloading and handling	CV9
(19) Special provisions for carriage: operation	S2
(20) Hazard identification No.	—

ADR 2027 (accepted) — no change for UN 3168

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 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 2.1 (Gases: flammable gases) (ADR 5.2.2.2.2, label model No. 2.3, 5.2.2.2.2, label model No. 2.1; paraphrase, not yet reviewed)
Packing: Packing instruction P201: UN 3167-3169 gas samples: approved cylinders, or hermetically sealed glass/metal inners of 5 l (non-toxic) or 1 l (toxic) in PG III packagings. 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, P201, 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. Operation provision S2: Flammable liquids/gases: no ordinary portable lights in closed load compartments; FL heaters off during loading; earth FL vehicles before filling. (ADR 7.5.11, CV9, 8.5, S2; 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 3168Class 2 — Gases