UN1397: Aluminum phosphide
UN1397 appears 1 time in the Hazardous Materials Table (49 CFR §172.101). Hazard class 4.3, packing group I.
All §172.101 entries for UN1397
| Proper shipping name | Class | PG | Labels |
|---|---|---|---|
| Aluminum phosphide | 4.3 | I | 4.3, 6.1 |
Open any entry for packaging sections, special provisions, air limits and vessel stowage.
What it means
Packing group ranks danger within the class: PG I = great danger.
Label codes (column 6): 4.3, 6.1 → Dangerous when wet label + subsidiary Poison / Toxic label.
UN numbers are recognized for international and domestic transport.
Reportable quantity (RQ)
- Aluminum phosphide is listed in Appendix A with an RQ of 100 lb (45.4 kg).
If a single package contains the RQ or more, the material is also a hazardous substance and “RQ” is added to the shipping description. How RQ is measured →
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 UN1397 in the current PHMSA Emergency Response Guidebook.
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Common questions about UN1397
What is UN1397?
UN1397 is the identification number for Aluminum phosphide in the DOT Hazardous Materials Table (49 CFR §172.101).
What hazard class is UN1397?
UN1397 is listed under hazard class 4.3 (dangerous when wet).
What packing group is UN1397?
Packing group for UN1397: I. Where several rows exist, the packing group that fits your material decides which row applies.