Shipping It: Hazmat and DOT Basics

Send xylol (xylene) through the mail or a freight carrier and it stops being ordinary cargo. It is a regulated hazardous material, a flammable liquid, and moving it means classifying, packing, marking, and papering it correctly. Getting that wrong is not a paperwork nuisance; it carries real fines and, worse, real fire risk in a truck or plane.

The identifiers that follow xylene through the transport system:

• UN number: UN 1307, the entry for xylenes.
• Proper shipping name: Xylenes.
• Hazard class: 3, flammable liquid.
• Packing group: usually II or III, depending on the exact flash point and boiling range.
• Label: the red flammable-liquid diamond.

Those details drive everything else. In the United States the Department of Transportation sets the rules under 49 CFR, air shipments add IATA rules, and ocean freight follows the IMDG code, each with its own limits on quantity, packaging, and who may handle it. A shipper has to use approved containers, mark and label the package, complete a shipping paper or dangerous-goods declaration, and in many cases hold current hazmat training. Quantity matters too, since small amounts may ship under limited-quantity provisions while drums move under the full rules.

The practical takeaway is simple: do not drop xylol in a box and hand it to a carrier. If you need to send it, use a supplier or a hazmat-certified shipper who does this routinely, and never try to disguise it as non-hazardous to dodge the requirements. Rules differ by country and mode and are updated regularly, so confirm the current version for your route rather than relying on a general summary like this one.