UN1845: Carbon dioxide, solid or Dry ice
UN1845 appears 1 time in the Hazardous Materials Table (49 CFR §172.101). Hazard class 9.
All §172.101 entries for UN1845
| Proper shipping name | Class | PG | Labels |
|---|---|---|---|
| Carbon dioxide, solid or Dry ice | 9 | — | None |
Open any entry for packaging sections, special provisions, air limits and vessel stowage.
What it means
Label codes (column 6): No hazard label required (label code “None”).
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 UN1845 in the current PHMSA Emergency Response Guidebook.
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Common questions about UN1845
What is UN1845?
UN1845 is the identification number for Carbon dioxide, solid or Dry ice in the DOT Hazardous Materials Table (49 CFR §172.101).
What hazard class is UN1845?
UN1845 is listed under hazard class 9 (miscellaneous hazardous material).
What packing group is UN1845?
Packing group for UN1845: not assigned. Where several rows exist, the packing group that fits your material decides which row applies.