UN 3476 — ADR 2025 Table A: class 4.3, classification code W3, packing group —, labels 4.3, special provisions 328 334, limited quantity 500 ml or 500 g, excepted quantity E0, packing instructions P004, transport category 3, tunnel restriction code (E), hazard identification number —.
UNECE ADR 2025, ECE/TRANS/352 · checked 2026-10-28
Table A — ADR 2025 (ECE/TRANS/352), UN 3476| (1) UN No. | 3476 |
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| (2) Name and description | FUEL CELL CARTRIDGES or FUEL CELL CARTRIDGES CONTAINED IN EQUIPMENT or FUEL CELL CARTRIDGES PACKED WITH EQUIPMENT, containing water-reactive substances |
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| (3a) Class | 4.3 |
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| (3b) Classification code | W3 |
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| (4) Packing group | — |
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| (5) Labels | 4.3 |
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| (6) Special provisions | 328 334 |
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| (7a) Limited quantities | 500 ml or 500 g |
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| (7b) Excepted quantities | E0 |
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| (8) Packaging: packing instructions | P004 |
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| (9a) Packaging: special packing provisions | — |
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| (9b) Packaging: mixed packing provisions | — |
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| (10) Portable tanks and bulk containers: instructions | — |
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| (11) Portable tanks and bulk containers: special provisions | — |
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| (12) ADR tank: tank code | — |
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| (13) ADR tank: special provisions | — |
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| (14) Vehicle for tank carriage | — |
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| (15) Transport category (Tunnel restriction code) | 3 (E) |
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| (16) Special provisions for carriage: packages | V1 |
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| (17) Special provisions for carriage: bulk | — |
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| (18) Special provisions for carriage: loading, unloading and handling | CV23 |
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| (19) Special provisions for carriage: operation | — |
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| (20) Hazard identification No. | — |
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ADR 2027 (accepted) — no change for UN 3476
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.
This entry under ADR 2027 on the API: /api/adr?un=3476&edition=2027 (editions and as_of).
ADR 2025 is the edition that applies until ADR 2027 takes effect on 1 January 2027, and FreightUtils answers on it by default until then; the API answers on ADR 2027 now with edition=2027. After that date, 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 (E): in tanks, Prohibited in E; in other carriage, Prohibited in E. Every category except E. (ADR 8.6.4; from the ADR table itself)
- Small-load exemption
- Transport category 3: at most 1000 per transport unit under 1.1.3.6, counted ×1 toward the 1,000-point limit (ADR 1.1.3.6.3; from the ADR table itself)
- Labels
- Labels: model 4.3 (Substances which emit flammable gases in contact with water) (ADR 5.2.2.2.2, label model No. 4.3; paraphrase, not yet reviewed)
- Packing
- Packing instruction P004: Fuel cell cartridges (UN 3473, 3476-3479) alone, packed with equipment or contained in equipment: packaging options for each case. (ADR 4.1.4.1, P004; 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 CV23: Take special measures when handling packages so they never come into contact with water. (ADR 7.2.4, V1, 7.5.11, CV23; 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 4.3 — Flammable Solids
- Packing Group
- N/A
- Not applicable
- Classification Code
- W3
- Tunnel Code
- (E) meaning →
- Code governing tunnel passage
- Transport Category
- 3
- For the 1,000-point rule (0 = highest restriction)
- Hazard ID No.
- —
- Kemler code
- Limited Quantity
- 500 ml or 500 g
- 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 3
×1 points per kg/L — up to 1,000 kg/L of this substance alone stays under the 1,000-point threshold
Per-substance max
1,000 kg/L
Per-substance maximum for 1.1.3.6 relief (1.1.3.6.3)
Limited Quantity
500 ml or 500 g
Max per inner packaging for LQ relief (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
Special Provisions
SP 328, SP 334
May alter scope or limits — full text in ADR 2025 Chapter 3.3
Hazard Labels Required
Label 4.3
These labels must be displayed on packages and vehicle placards in accordance with ADR 2025.
Special Provisions
SP 328SP 334
Refer to ADR 2025 Chapter 3.3 for full text of each provision.
Check if UN 3476 qualifies for 1.1.3.6 exemption
Calculate small load points and check exemption thresholds
📅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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