UN2491: Ethanolamine or Ethanolamine solutions
UN2491 appears 1 time in the Hazardous Materials Table (49 CFR §172.101). Hazard class 8, packing group III.
All §172.101 entries for UN2491
| Proper shipping name | Class | PG | Labels |
|---|---|---|---|
| Ethanolamine or Ethanolamine solutions | 8 | III | 8 |
Open any entry for packaging sections, special provisions, air limits and vessel stowage.
What it means
Packing group ranks danger within the class: PG III = minor danger.
Label codes (column 6): 8 → Corrosive label.
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 UN2491 in the current PHMSA Emergency Response Guidebook.
Get the HazmatTable Field Guide poster pack
8 printable hazmat reference posters — reading a table entry, hazard classes, placards, segregation, shipping papers and more. Free, sent to your inbox.
Common questions about UN2491
What is UN2491?
UN2491 is the identification number for Ethanolamine or Ethanolamine solutions in the DOT Hazardous Materials Table (49 CFR §172.101).
What hazard class is UN2491?
UN2491 is listed under hazard class 8 (corrosive).
What packing group is UN2491?
Packing group for UN2491: III. Where several rows exist, the packing group that fits your material decides which row applies.