Packing, Labeling, and Dangerous Goods: The Safety Basics

This is an independent educational guide, not the website of any carrier, freight forwarder, or regulator.

aerolink-logistics.com is an independent, non-commercial field guide to freight and logistics. It explains how goods move by air, sea, road, and rail, what documents a shipment needs, how packing, labeling, and dangerous-goods rules work, and the vocabulary of the industry. It sells nothing, arranges no shipments, accepts no advertising, recommends no specific carrier or service, and has no affiliation with IATA, the IMO, or ICAO, or any other named organization.

Before you pay a carrier or forwarder, you need to understand what you are handing over. A shipment is only as safe as the box it travels in and the labels on that box. This guide walks through the shipper's side of that bargain: how to pack for export, which marks must travel with the goods, and how regulated substances fit into the picture. You will meet the main rule-publishers by name, learn what a shipper's declaration is for, and find a quick decision table for common shipments. Nothing here replaces the actual regulations or the advice of a trained professional.

Why packing is the shipper's responsibility

A carrier moves what it is handed. It does not open your carton, test your cushioning, or decide whether your pallet can survive a stack of three. That decision belongs to you, the shipper, and it stays with you after the truck pulls away. When goods arrive crushed, wet, or rattling, the damage claim turns on how the goods were packed: was the outer box strong enough, was the load secured, were fragile items protected from movement? A carrier will typically point to the packing as the cause, and if the packing was weak, the claim is hard to win. Packing well is not paperwork. It is the part of the shipment you actually control.

The working principles of export packing

Four ideas cover most of it. First, a strong outer box or crate: the outer container carries the load, so it must be rigid enough to hold its shape when stacked or strapped. Second, cushioning that stops movement: fill voids so the contents cannot shift, because a box that rattles inside is a box that damages itself in transit. Third, weight spread across the pallet: heavy items belong over the pallet deck and its bearers, not cantilevered off one edge, and the load should sit squarely so a forklift can lift it. Fourth, a label on every handling unit: each carton, each pallet, each crate gets its own marks, because units get separated.

Illustrative example (invented for this guide, not real shipment data): a pallet carrying twelve cartons of ceramic tiles. The cartons are stacked in an interlocking pattern, a rigid sheet separates layers, stretch film and two vertical straps hold the stack to the pallet, and a label on the outside of the stack names the consignee and shows orientation arrows. The tiles do not move when the pallet is tilted.

Labels and marks that travel with the shipment

Marks fall into three groups. Shipper and consignee marks identify who sent the goods and who receives them, usually with a reference number that matches the paperwork. Handling marks tell people what to do with the package: orientation arrows show which way is up, and glass, keep-dry, and do-not-stack marks warn about the contents. The shipping label itself carries the routing information the carrier needs, such as the destination and the consignment reference. Keep marks legible on at least two sides of a carton, and never cover them with tape that obscures the text.

Dangerous goods in plain language

Many ordinary products are regulated in transport. Lithium batteries in a laptop, aerosols, paints and solvents, and perfumes with alcohol content all fall under dangerous-goods rules, because they can ignite, corrode, or react under pressure. The rules differ by mode. For air, IATA publishes the Dangerous Goods Regulations, the working manual airlines and forwarders use. Behind those rules sit the Technical Instructions published by the International Civil Aviation Organization, the body that sets the international standards for civil aviation. For sea, the IMDG Code from the International Maritime Organization governs how dangerous goods are classified, packed, marked, and documented on vessels. Each publisher issues its own text; none of them is a how-to for a first-time shipper, which is why most businesses rely on trained staff or a qualified provider.

The shipper's duties when goods are regulated

If your goods are regulated, four duties land on you. Correct classification means identifying what the substance is and which hazard class it belongs to, using the official lists rather than guesswork. Approved packaging means using packaging that meets the standard for that class, not a reused carton. Marks and labels means applying the hazard labels and proper shipping name the rules require. A shipper's declaration is the signed document stating what the goods are and that they have been prepared correctly; carriers rely on it. Get any of these wrong and the shipment can be refused at acceptance. Use trained staff or a qualified dangerous-goods provider rather than teaching yourself from a summary.

A decision table for common shipments

FAQ

Who is responsible if my goods arrive damaged?

The packing is usually examined first. If the outer box or cushioning was inadequate, the claim is difficult, so document how you packed before handover.

Do I need a label on every carton?

Yes. Each handling unit should carry shipper and consignee marks plus handling marks, because units get separated in transit.

Is a laptop with a battery a dangerous good?

Lithium batteries are regulated in transport, though installed batteries in small devices are treated differently from loose cells. Check the air rules before shipping.

Where do I find the sea rules for paint?

The IMDG Code from the IMO is the reference for dangerous goods by sea. A qualified provider can apply it to your specific product.

Can I write my own shipper's declaration?

Only if you know the classification and packing requirements. Most shippers use trained staff or a qualified provider to prepare and sign it.