UN2978: Radioactive material, uranium hexafluoride
As listed: Radioactive material, uranium hexafluoride non fissile or fissile-excepted
UN2978 appears 1 time in the Hazardous Materials Table (49 CFR §172.101). Hazard class 7.
All §172.101 entries for UN2978
| Proper shipping name | Class | PG | Labels |
|---|---|---|---|
| Radioactive material, uranium hexafluoride non fissile or fissile-excepted | 7 | — | 7, 6.1, 8 |
Open any entry for packaging sections, special provisions, air limits and vessel stowage.
What it means
Label codes (column 6): 7, 6.1, 8 → Radioactive label + subsidiary Poison / Toxic, Corrosive labels.
UN numbers are recognized for international and domestic transport.
Example basic description
Proper shipping name shown without the table's italic descriptive text. Order per §172.202: ID number, proper shipping name, hazard class, packing group. Example only — add technical names, “RQ”, quantities and other elements your shipment requires.
What to check next
- Match the name. Compare your SDS Section 14 to the proper shipping names above and pick the row with your packing group.
- Read the special provisions on the entry page (§172.102) — they can add limits or exceptions.
- Check packaging — the entry page lists the Part 173 sections for exceptions, non-bulk and bulk.
- Labels & placards. Placarding depends on class and quantity — see Table 1 vs Table 2.
- Emergency response. Find the response guide for UN2978 in the current PHMSA Emergency Response Guidebook.
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Common questions about UN2978
What is UN2978?
UN2978 is the identification number for Radioactive material, uranium hexafluoride in the DOT Hazardous Materials Table (49 CFR §172.101).
What hazard class is UN2978?
UN2978 is listed under hazard class 7 (radioactive material).
What packing group is UN2978?
Packing group for UN2978: not assigned. Where several rows exist, the packing group that fits your material decides which row applies.