UN2672: Ammonia solution
As listed: Ammonia solution, relative density between 0.880 and 0.957 at 15 degrees C in water, with more than 10 percent but not more than 35 percent ammonia
UN2672 appears 1 time in the Hazardous Materials Table (49 CFR §172.101). Hazard class 8, packing group III.
All §172.101 entries for UN2672
| Proper shipping name | Class | PG | Labels |
|---|---|---|---|
| Ammonia solution, relative density between 0.880 and 0.957 at 15 degrees C in water, with more than 10 percent but not more than 35 percent ammonia | 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 UN2672 in the current PHMSA Emergency Response Guidebook.
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Common questions about UN2672
What is UN2672?
UN2672 is the identification number for Ammonia solution in the DOT Hazardous Materials Table (49 CFR §172.101).
What hazard class is UN2672?
UN2672 is listed under hazard class 8 (corrosive).
What packing group is UN2672?
Packing group for UN2672: III. Where several rows exist, the packing group that fits your material decides which row applies.