UN1067: Dinitrogen tetroxide
UN1067 appears 1 time in the Hazardous Materials Table (49 CFR §172.101). Hazard class 2.3.
All §172.101 entries for UN1067
| Proper shipping name | Class | PG | Labels |
|---|---|---|---|
| Dinitrogen tetroxide | 2.3 | — | 2.3, 5.1, 8 |
Open any entry for packaging sections, special provisions, air limits and vessel stowage.
What it means
Label codes (column 6): 2.3, 5.1, 8 → Poison gas label + subsidiary Oxidizer, Corrosive labels.
UN numbers are recognized for international and domestic transport.
Reportable quantity (RQ)
- Dinitrogen tetroxide is listed in Appendix A with an RQ of 10 lb (4.54 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 UN1067 in the current PHMSA Emergency Response Guidebook.
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Common questions about UN1067
What is UN1067?
UN1067 is the identification number for Dinitrogen tetroxide in the DOT Hazardous Materials Table (49 CFR §172.101).
What hazard class is UN1067?
UN1067 is listed under hazard class 2.3 (poisonous (toxic) gas).
What packing group is UN1067?
Packing group for UN1067: not assigned. Where several rows exist, the packing group that fits your material decides which row applies.