UN3383: Toxic by inhalation liquid
As listed: Toxic by inhalation liquid, flammable, n.o.s. with an LC50 lower than or equal to 200 ml/m3 and saturated vapor concentration greater than or equal to 500 LC50
UN3383 appears 1 time in the Hazardous Materials Table (49 CFR §172.101). Hazard class 6.1, packing group I.
All §172.101 entries for UN3383
| Proper shipping name | Class | PG | Labels |
|---|---|---|---|
| Toxic by inhalation liquid, flammable, n.o.s. with an LC50 lower than or equal to 200 ml/m3 and saturated vapor concentration greater than or equal to 500 LC50 | 6.1 | I | 6.1, 3 |
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): 6.1, 3 → Poison / Toxic label + subsidiary Flammable liquid 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 UN3383 in the current PHMSA Emergency Response Guidebook.
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Common questions about UN3383
What is UN3383?
UN3383 is the identification number for Toxic by inhalation liquid, flammable, n.o.s. in the DOT Hazardous Materials Table (49 CFR §172.101).
What hazard class is UN3383?
UN3383 is listed under hazard class 6.1 (poisonous (toxic) material).
What packing group is UN3383?
Packing group for UN3383: I. Where several rows exist, the packing group that fits your material decides which row applies.