What are UN/ID number and proper shipping name used for?

• A. They are used for customs classification only.
• B. They identify the packaging material.
• C. They indicate the shipment's destination country.
• D. UN/ID number identifies the specific substance; proper shipping name is the official name used on shipping papers and labels.

Answer: (D)

UN/ID numbers identify the specific hazardous material across all modes of transport, so everyone from shippers to emergency responders knows exactly what substance is involved, even if different languages or regulations are in play. The official shipping name is the exact name used on shipping papers and on labels or placards, ensuring clear, consistent identification in documentation and communications. Together, the UN/ID number points to the substance, while the proper shipping name communicates its precise legal name for paperwork and labeling. This isn’t about customs classification, packaging materials, or destination country; it’s about reliably identifying the material itself for safe handling and regulatory compliance.