In plain English
Examples include flammable liquids, aerosols, batteries, paints and certain chemicals. Shipments must be classified, packaged and labeled to the rules, travel with a hazmat bill of lading and be moved by carriers that accept hazmat.
Carriers charge a hazmat accessorial fee, and some will not take certain classes at all.
Why it matters when you ship
Not declaring hazmat is dangerous and can bring fines. Even everyday items such as aerosols, lithium batteries and paint can count, so check the safety data sheet.
Example
A shop ships a pallet of spray paint. It is classified as hazmat, labeled and booked with a carrier that accepts it, with a hazmat fee.
Related terms
Learn more
Hazmat: common questions
How do I know if my freight is hazmat?
Check the product’s safety data sheet for a UN number and hazard class. If there is one, it is probably regulated; ask the carrier.
Cite this page
Cite as: Transportli, “Hazmat in Shipping: Meaning and Requirements”, https://transportli.com/glossary/hazmat/, updated November 11, 2026.
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