If a material has a UN number, what must you ensure on the shipping paper?

• A. The UN number is omitted
• B. The UN number is included only if the material has a UN number
• C. The UN number is included on the bill of lading only
• D. The UN number is included on the shipping paper (along with other required details)

Answer: (D)

Hazardous materials require a clear, standardized identifier on the shipping paper so everyone along the transport chain can recognize the exact material and respond appropriately in an emergency. If a material has a UN number, that UN number must appear on the shipping paper, and it should be listed with the other required details such as the proper shipping name, hazard class, packing group, and the quantity.

This keeps the documentation consistent with regulations and helps responders quickly identify the material. Omitting the UN number would lead to noncompliance, and simply listing it on another document or only certain documents isn’t sufficient—the shipping paper itself must include the UN number along with the other required information.