HazmatTable Guide
How Do I Find a UN or NA Number?
The identification number is part of the basic hazmat shipping description and is found with the applicable entry in the Hazardous Materials Table.
Short answer
The identification number is part of the basic hazmat shipping description and is found with the applicable entry in the Hazardous Materials Table.
The identification number is part of the basic hazmat shipping description and is found with the applicable entry in the Hazardous Materials Table.
Why this matters
UN, NA or ID prefixes are part of the identification number used on shipping papers when applicable.
A better workflow
Find the proper shipping name first, then read across the HMT entry to the identification number and other classification fields. Do not select a UN number solely because the product name sounds similar.
Check your material in HazmatTable
Search the table, compare the listed RQ, and see the source in seconds.
What HazmatTable helps with
- Search a chemical, synonym, waste code or radionuclide.
- See the listed RQ and units without scanning a long PDF.
- Preserve important Appendix A footnotes and source context.
- Compare an entered package quantity with the listed RQ.
- Continue into related shipping and classification guides.
Important: HazmatTable is a reference and workflow tool, not a legal certification of a shipment. The shipper must verify the current HMR and the actual material, quantity, packaging and mode.
Authoritative references: 49 CFR §172.101 / Appendix A and PHMSA hazmat guidance. PHMSA Hazmat · Appendix A source used for this database