Consolidating Dangerous Goods in LCL: Acceptance and Segregation for Forwarders

Accepting dangerous goods (DG) into an LCL consolidation is a different decision from accepting them into a container one shipper fills. In a shared box, the consolidator or CFS decides which shippers' goods sit together, usually certifies the packing of the whole container under the IMDG Code, and often becomes the party that signs the declaration to the ocean carrier. Several of the rules are unforgiving: not every consolidator or service takes DG at all, incompatible classes cannot simply be put in the same box, and a misdeclared drum becomes your problem the moment you pack it. This guide is the forwarder's operating view. The shipper-side detail is covered elsewhere, so we link to it rather than repeat it: the dangerous goods declaration guide, segregation and stowage of dangerous goods at sea and the nine classes explained.

Which edition of the IMDG Code applies in October 2026?

The IMDG Code has been mandatory for packaged dangerous goods by sea under SOLAS since 1 January 2004, and IMO amends it on a two-year cycle. As of October 2026 the amendment set in force is Amendment 42-24 (the 2024 edition). IMO's summary of the Maritime Safety Committee session that adopted these amendments gave 1 January 2026 as their expected entry-into-force date. Amendments can often be applied voluntarily earlier, so a carrier may have moved before the formal date. Make sure your DG reference or software is the current edition, because segregation tables and special provisions change between amendments. Check IMO's own IMDG Code publication page for the current status, because the next amendment cycle will follow.

Can dangerous goods go LCL at all?

Only if the consolidator and the carrier service both say yes, and the answer is specific to the lane, the line and the class. This is the first misconception to clear up: LCL DG is not simply FCL DG on a smaller scale. A full-container shipper deals with the carrier directly on one booking; an LCL shipper depends on a consolidator who has to run a mixed container past the carrier's DG department.

• Many LCL services refuse DG entirely. Some consolidators run general cargo only on certain trades, and some CFS facilities have no DG storage or permit. Give a "no DG" answer early.
• Where DG is taken, it is usually limited by class. In practice the classes most often declined for shared containers are the highest-risk ones, such as explosives, toxic gases, infectious substances and radioactive material, with some self-reactive substances and organic peroxides also commonly restricted. Treat that as a pattern, not a rule: each consolidator and line publishes its own acceptance list, and it can change without notice.
• The carrier must accept each DG booking as well. Even where a consolidator takes the class, the line normally has to approve the specific UN number and packing on the master booking, and may decline a particular combination, vessel or port.
• The facility may need a permit. Warehouse storage of DG is usually regulated nationally or locally, separately from the IMDG Code.

The shipper may have a way out of full DG rules if the goods qualify as limited or excepted quantities, but that is a claim to check, not a presumption; see limited and excepted quantities and do not let the CFS treat a quantity exemption as proven because the paperwork says so.

What to check at the CFS before you accept dangerous goods

Acceptance happens twice: on paper at booking, and physically at the door. The point of the door check is that paper and cargo are two different things. A declaration describing UN 1993 in good packaging does not prove that the pallets in front of you are UN 1993 in good packaging.

• Declaration against the cargo. Compare the shipper's dangerous goods declaration with what arrived: UN number, proper shipping name, class and any subsidiary hazard, packing group, number and type of packages, and net and gross quantities. Mismatched counts or a different product on the label are grounds to stop.
• Packaging marks. Look for the UN specification mark on each package that needs one. It shows the packaging type code, the highest packing group the packaging is rated for (X, Y or Z) and other test details. Check that the rated group is suitable for the packing group declared. Damaged, leaking or visibly contaminated packages do not get loaded.
• Labels and marks on each package. Hazard labels for the class and any subsidiary risk, the proper shipping name and UN number, orientation arrows where needed, and the marine pollutant mark where applicable.
• The consignment's exemption claim. If the shipper declares limited or excepted quantities, confirm the packages carry the right marks and do not exceed the allowed inner and outer package limits for that entry.
• Emergency contact and documents. The declaration needs a person who can answer questions during transit, and the safety data sheet should match the declared UN entry.

Segregation applies to the whole container, not to each shipper

This is where LCL differs most from a shipper-packed box. The IMDG Code's segregation provisions in chapter 7.2 assign a relationship to each pair of classes and, for some substances, to groups such as acids or alkalis. Chapter 7.3 covers packing and loading a cargo transport unit. The consolidator therefore has to check every DG consignment against every other DG consignment going into the same container, and also against general cargo and the container itself.

• Check every pair. If shipper A's flammable liquid and shipper B's oxidiser are both booked into the same sailing, look them up against each other before allocating a container, not after cargo is on the floor.
• Distance inside a box is not a free fix. The segregation terms in the table were written with a ship's holds and deck in mind, and the Code has specific provisions for how they apply inside one container. Do not assume that stowing two incompatible consignments at opposite ends of the same box satisfies the rule. Read the container-level provisions in the edition in force. When a pair is restricted and you are not certain, put the goods in different containers or refuse one of them.
• The box must be suitable. The container must be clean, dry and structurally sound, and the load must be blocked and braced so it cannot shift. The CTU Code (the IMO, ILO and UNECE code of practice for packing cargo transport units) is the practical reference; it is a non-mandatory code of practice, so use it as good practice alongside the IMDG Code's own binding packing provisions.
• Placards and marks go on the container. The packer applies placards and the marine pollutant mark to the outside of the loaded container for the classes inside, including subsidiary risks.

The container packing certificate (IMDG 5.4.2)

When dangerous goods are packed into a container, the IMDG Code requires a container/vehicle packing certificate, set out in section 5.4.2. The certificate gives the container number and states that packing was done in accordance with the conditions in that section, which cover, among others, that the container was clean and dry and fit for the load, that the packages were inspected and only sound ones loaded, that the load is secured, that the container is marked and placarded, and that a DG transport document was received for each consignment. It can be a separate form or be combined with the dangerous goods transport document, so long as it is signed.

The person who signs is the one responsible for the packing of the container. Where a shipper packs and seals a full container, that is the shipper. In LCL, the consolidator or CFS operator that stuffs the container is typically the signatory, which means the certificate is your statement about other people's goods and about your own stuffing. Sign only after the packing has actually been checked against the conditions on the form.

The DG manifest and load plan

The carrier builds its ship's dangerous goods manifest and stowage plan from the data you submit, so errors at your end travel to the vessel. Submit the UN number, proper shipping name, class, subsidiary risk, packing group, marine pollutant status, package counts and quantities on the master booking, and make sure the container's load plan lists the same consignments and ties to the house bills. If a shipper changes a quantity or swaps a product after booking, resubmit rather than hoping the terminal catches it; a DG change close to cut-off often costs the slot.

What happens when DG is misdeclared

The shipper is liable for what the shipper declared, and bills of lading and the Hague-Visby Rules (and similar regimes) generally put the cost of loss and damage caused by dangerous goods shipped without proper disclosure on the shipper, and let the carrier land, destroy or render harmless goods it did not know were dangerous. In an LCL chain the carrier's "shipper" is often you, as the consolidator, so a misdeclaration at the origin door can reach the carrier as your breach, and recovering from the shipper depends on your contract and documents.

• Carrier action. Lines can refuse, hold, return or dispose of misdeclared goods and charge the party on the booking. Fines under national law are also possible; they vary, so we quote no amounts.
• Your insurance. Many forwarder liability policies and cargo covers restrict or exclude dangerous goods unless specifically agreed. Read the DG wording before you take your first consignment, not after an incident. See forwarder insurance explained.
• Your terms. Make sure your trading conditions require the shipper to indemnify you for misdeclared dangerous goods, and that you accept DG only from customers who have agreed those terms in writing.

DG surcharges and pricing

DG in LCL normally costs more than general cargo. The extra comes from the consolidator's DG handling fee, the carrier's DG surcharge on the master booking, container space lost when incompatible goods must be separated, and hazardous storage at the CFS. The basis (per cubic metre, per tonne, per shipment, with minimums) and the level vary by carrier, trade and class and change over time, so quote from current tariffs and do not carry a general-cargo rate across. For many DG shippers a small FCL booking can cost less overall than a restricted LCL service; the commercial side of consolidator terms is covered in LCL co-loading and consolidator relationships.

DG acceptance checklist for an LCL consolidator

• Written confirmation from the consolidator and the carrier that this class and UN number is accepted on this lane and service.
• Complete shipper DG declaration received, signed, and checked against the cargo (UN number, name, class, packing group, quantity).
• Packages inspected for damage, leaks and contamination; UN specification marks, labels and marks present and legible.
• Limited or excepted quantity claims validated against the actual package sizes.
• Segregation checked for every pair of DG in the container, and against general cargo, in the edition of the Code in force.
• Container clean, dry and suitable; load blocked and braced.
• Placards and marks applied to the loaded container.
• Container packing certificate signed by the person who actually supervised the packing.
• DG data submitted to the carrier matching the load plan and the house bills.
• File kept: declaration, photos, certificate, tally.

What to do next

1. Ask each consolidator and carrier you use for their written DG acceptance list by class and lane, and keep it current.
2. Build a segregation check into your booking process so incompatible pairs are caught when space is allocated, not at the door.
3. Make sure the person who signs packing certificates has had DG training; see dangerous goods training and certification for forwarders.
4. Review your insurance wording and customer terms for DG before the next enquiry arrives.

If you need a consolidator, CFS or carrier partner that handles DG on a specific lane, more than 29,300 logistics companies are searchable by country and service in the CargoLinked directory, and the public requests board lists freight that shippers have posted for forwarders to quote on directly.

This article is general information, not legal, regulatory or insurance advice. Dangerous goods rules differ by edition, mode, carrier and country, and you should confirm requirements in the current IMDG Code, with the carrier and CFS, and with a qualified dangerous goods safety adviser before accepting a consignment.