UN 3225 — ADR 2025 Table A: class 4.1, classification code SR1, packing group —, labels 4.1, special provisions 194 274, limited quantity 125 ml, excepted quantity E0, packing instructions P520, 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 3225
(1) UN No.	3225
(2) Name and description	SELF-REACTIVE LIQUID TYPE D
(3a) Class	4.1
(3b) Classification code	SR1
(4) Packing group	—
(5) Labels	4.1
(6) Special provisions	194 274
(7a) Limited quantities	125 ml
(7b) Excepted quantities	E0
(8) Packaging: packing instructions	P520
(9a) Packaging: special packing provisions	—
(9b) Packaging: mixed packing provisions	MP2
(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	V1
(17) Special provisions for carriage: bulk	—
(18) Special provisions for carriage: loading, unloading and handling	CV15 CV22
(19) Special provisions for carriage: operation	S19
(20) Hazard identification No.	—

ADR 2027 (accepted) — no change for UN 3225

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 4.1 (Flammable solids, self-reactive and polymerizing substances, and solid desensitized explosives) (ADR 5.2.2.2.2, label model No. 4.1; paraphrase, not yet reviewed)
Packing: Packing instruction P520: Organic peroxides (5.2) and self-reactive substances (4.1): packing methods OP1-OP8 set per-package quantity limits; metal only for OP7/OP8. Mixed packing provision MP2: No mixed packing: the goods must be alone in their package. (ADR 4.1.4.1, P520, 4.1.10.4, MP2; paraphrase, not yet reviewed)
Carriage: Carriage provision V1: Packages must go on a closed or sheeted vehicle or in a closed or sheeted container; open vehicles and containers are not allowed. Loading provision CV15: Pointer: the mixed-loading limits in 7.5.5.3 apply. Loading provision CV22: Load for free air circulation; above 5 000 kg per vehicle or large container, split into stacks ≤ 5 000 kg with ≥ 0.05 m gaps. Operation provision S19: Chapter 8.4 vehicle supervision applies when the total mass in the vehicle exceeds 5 000 kg. (ADR 7.2.4, V1, 7.5.11, CV15, 7.5.11, CV22, 8.5, S19; 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 4.1 — Flammable Solids

UN 3225Class 4.1 — Flammable Solids