What makes cargo count as dangerous goods?

Falling into one of the nine classes set by the IMDG Code — the international code every shipping line and port in Pakistan works from. It is a shipping and stowage classification first, not a customs one.

Which IMDG class do lithium batteries and battery storage fall under?

Class 9, miscellaneous dangerous goods. That covers lithium-ion and lithium-metal cells and batteries, and the battery energy storage systems built around them.

Which class do the chemicals and dyes we import usually fall under?

Most commonly Class 3, 6 or 8, depending on the specific chemical — flammable, toxic or corrosive respectively. The safety data sheet, not the trade name, is what settles it.

Does dangerous goods cargo need different paperwork from an ordinary shipment?

Yes. A Dangerous Goods Declaration in the IMDG Code's format, a safety data sheet, and UN-certified packaging travel alongside the usual invoice, packing list and bill of lading. Batteries need a UN 38.3 test summary as well.

Why does a dangerous goods container cost more to handle at the terminal?

It moves into a designated Dangerous Goods Shed rather than the general transit shed, and for some IMDG classes it is discharged into barges rather than worked directly at the berth. Both are handling steps ordinary cargo does not go through, and both carry their own charges under the port's tariff.

Is dangerous goods cargo examined differently by customs?

The examination channel itself is assigned on the same risk-based system as any other declaration. What differs is where the container sits at the terminal while that plays out, which is a port-handling question rather than a customs one.

Does Port Qasim handle dangerous cargo differently from Karachi Port?

It is a separate port with its own authority, and we have not found a published dangerous-cargo tariff of its own the way Karachi Port Trust has one. IMDG classification and the shipping paperwork behind it still apply regardless of which port the vessel calls at.

Can dangerous goods cargo be cleared faster if we ask?

No. If anything, expect the opposite — the container still has to go through the dangerous-cargo shed process at the terminal no matter how quickly the declaration itself is filed and assessed.

Guides · Dangerous goods

What makes a shipment dangerous goods, and what that changes at clearance.

Shafiq Traders · Updated 14 September 2026

Cargo is dangerous goods when it falls into one of the nine classes set by the IMDG Code — the international rulebook every shipping line and port in Pakistan works from, whether or not the importer has ever read it. For this firm's own register, that mostly means lithium batteries and battery storage equipment under Class 9, and chemicals and dyes that fall under Class 3, 6 or 8 depending on what they are. Declaring cargo as dangerous goods does not change the customs duty on it or how it is assessed. It changes the shipping documents that have to travel with it, and it changes where the container sits at the terminal once it lands — which is where the extra cost and the extra time actually come from, not from customs itself.

Whose rulebook this actually is

"Dangerous goods" is not a customs term first. It is a shipping and stowage term, set by the IMDG Code — the International Maritime Dangerous Goods Code — which every vessel calling at a Pakistani port is required to follow. In Pakistan, the Mercantile Marine Department, under the Ministry of Maritime Affairs, is the body that examines and approves a vessel's plan for loading dangerous cargo against that code, and issues the compliance certificate a ship carrying it has to hold.

Customs comes in afterward, on the declaration itself, the same way it does for any other cargo. The port authority comes in on where the container physically goes once it is off the ship. Three different bodies, three different jobs, and an importer usually only meets the third one directly — because that is the one that shows up as a cost and a delivery date.

The classes an importer on this register actually meets

Classes set by the IMDG Code (International Maritime Organization); cargo definition cross-checked against Karachi Port Trust's own dangerous cargo rules on kpt.gov.pk. Checked 14 September 2026.
IMDG class	What it covers	Where it shows up on our register	What changes at the terminal
Class 3 — Flammable liquids	Solvent-based chemicals and some dyeing auxiliaries	Chemical and dye imports feeding the mills on this register	Segregated from general cargo and, for some vessels, worked off the ship into barges rather than direct to wharf
Class 6 — Toxic substances	Certain dye intermediates and industrial chemicals	The same chemical imports where a certificate of analysis already decides the customs heading	Composition decides both the IMDG class and the PCT heading — one document, two questions
Class 8 — Corrosive substances	Acids and alkalis used in textile and chemical processing	Processing chemicals ordered alongside dyes on the same account	Stored under the same dangerous-cargo rules as any other class, regardless of how mild the chemical seems on the drum
Class 9 — Miscellaneous dangerous goods	Lithium-ion and lithium-metal batteries, and battery energy storage systems	Most of the battery and solar-storage shipments we currently clear	Needs a battery-specific test summary beyond the general dangerous goods paperwork

What a dangerous goods consignment needs, beyond the usual paperwork

None of this replaces the ordinary invoice, packing list and bill of lading. It travels alongside them.

Dangerous Goods Declaration

A shipper's declaration in the IMDG Code's own format, naming the UN number, the class and the packing group. A commercial invoice does not stand in for it.

Safety data sheet

The chemical's SDS travels with the shipment, and it is what gets read first if a query is raised — not the product name on the invoice.

UN-certified packaging

The drum or container itself carries a UN mark certifying it for the class and packing group inside it. Unmarked packaging is something a terminal can refuse to move.

Battery test summary

Lithium cells and batteries travel with a UN 38.3 test summary confirming they have passed the transport safety tests, separate from any certification the finished equipment carries.

Advance notice to the terminal

The carrier's agent flags the consignment as dangerous cargo before discharge, because it does not go into the same shed as everything else on the vessel.

Why it costs more and takes longer, structurally

Karachi Port Trust's own rules define dangerous cargo by reference to the IMDG Code and require it to be moved into a designated Dangerous Goods Shed rather than a general transit shed — the shipping agent is responsible for making that move, not the importer, but it is the importer's container sitting in a different queue as a result. Cargo bearing IMDG Classes 1, 3 and 7 is discharged into barges under KPT's rules rather than worked directly at some berths, which is a handling step ordinary cargo does not go through. KPT's published tariff sets separate charges and a separate free-time category for dangerous cargo; we are not going to quote you a rupee figure or a day count from a tariff schedule we cannot confirm is the current revision, but the structure itself — a different shed, a different handling step, a different charge line — is real and it is set by the port, not by us.

Port Qasim is a different port with its own authority, and we have not found a dangerous-cargo tariff published on its own site the way KPT publishes one. That does not mean the cargo is treated as ordinary there — IMDG classification and the shipping documents behind it apply regardless of which port the vessel calls at. It means we cannot point you to a Port Qasim-specific rate the way we can for Karachi, and we would rather say that plainly than guess at a figure.

None of this changes how customs examines the declaration. A dangerous goods shipment goes through the same risk-based channel assessment as anything else. What is different is where the container physically sits while that happens.

We are not going to declare a dangerous goods shipment as general cargo to save you the shed fee, even if that is exactly what another agent offers to do quietly. A chemical drum or a battery consignment found undeclared at the terminal is a bigger problem than the fee it was trying to avoid, and by then it is our name on the file as well as yours.

Battery, chemical and energy importers we have cleared for

Most of the dangerous goods on this register arrives as batteries, battery storage equipment, or the chemicals and dyes that feed the textile mills we clear for.