Labeling for batteries in ADR 2025: New UN numbers for batteries and their safety regulations

Table A of the ADR 2025 will be comprehensively revised and supplemented by 11 new UN numbers, including important innovations in the area of batteries and their transportation. Particularly noteworthy are the changes regarding sodium-ion batteries, which will have a significant impact both in practice and for dangerous goods logistics.

From 2025, the following new UN numbers will be introduced to regulate the handling of batteries:

UN 3551:

This number applies to sodium-ion batteries with organic electrolyte. Sodium-ion batteries are a more cost-effective alternative to lithium-ion batteries and offer improved thermal stability, which makes them safer for transportation. They can also be transported in a deeply discharged state.

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UN 3552:

This number covers sodium-ion batteries in equipment or packed together with equipment. This classification ensures that sodium-ion batteries transported in combination with equipment are also handled correctly.

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The previous UN number 3292 will now be renamed “Batteries or cells containing metallic sodium or sodium alloys” in order to create a clear distinction from the new numbers. This also entails new special provisions (SV 400, SV 401, SV 677).

The perfect combinations - at BOXLAB Services

Gefahrzettel

ÄNDERUNGEN IM ADR 2023: SONDERVORSCHRIFT 188 NEUES FORMAT BEI DER MARKIERUNG FÜR LITHIUMBATTERIEN IN ABSATZ 5.2.1.9.2

ADR SV 188

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ADR konform
Format: 100x100mm
Blattware oder Rollenware
Seewasserbeständig gem.
BS 5609 Sektion III
Beständig von -40 bis +60 °C
Material: Polypropylen (PP)

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Additional UN numbers for batteries and drive types

UN 3556:

This number is intended for vehicles with lithium-ion batteries. It covers the transportation of vehicles powered by these batteries.

UN 3557:

This number applies to vehicles powered by lithium metal batteries.

UN 3558:

This number applies to vehicles powered by sodium-ion batteries.

There is also a new special regulation for UN 3558: SV 404 and a new packing instruction P 912.

Further new UN numbers in ADR 2025

In addition to the battery-related numbers, there are also new UN numbers for other substances and materials:

UN 3553: For disilane, a pyrophoric hydrogen silicon gas used in industry.
UN 3554: For gallium in manufactured devices, as a mercury substitute to reduce pollutant emissions.
UN 3555: For trifluoromethyl-tetrazole sodium salt in acetone, a precursor for insecticides.
UN 3559 and UN 0514: Both numbers refer to fire extinguishing agent dispersing devices for aerosol extinguishing systems used in lithium battery fires.
UN 3560: For tetramethylammonium hydroxide in aqueous solution, a highly toxic caustic agent.

Conclusion and outlook

The new UN numbers and regulations in ADR 2025 are crucial for the safe and compliant transportation of batteries and other hazardous materials. The introduction of UN 3551 and UN 3552 shows the growing importance of sodium-ion technologies and their specific transportation requirements. The other changes expand the regulations for other hazardous substances and improve safety in the transportation of dangerous goods.

Further details on the changes and their effects can be found in the current publications on dangerous goods legislation.

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Labels in various designs

We are pleased to announce that BOXLAB Services has already responded to the change in the minimum size and layout for the marking of lithium and sodium batteries in ADR 2025. We have added labels in the new format and layout to our range and offer them in various designs. Whether you need single sheets, 500 or 3000 rolls, we have the right quantity for your needs. All our dangerous goods labels are seawater resistant to BS 5609 Section III, which means they will remain durable and highly visible even in harsh environments, including sea transportation.

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