NA1993: Combustible liquid, n.o.s.
NA1993 appears 9 times in the Hazardous Materials Table (49 CFR §172.101). Hazard class Comb liq, 3, packing group III, I, II.
All §172.101 entries for NA1993
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; PG I = great danger; PG II = medium danger.
Label codes (column 6): No hazard label required (label code “None”) · 3 → Flammable liquid label.
NA numbers are North-America-only identification numbers — not recognized for international transport except to and from Canada.
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 NA1993 in the current PHMSA Emergency Response Guidebook.
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Common questions about NA1993
What is NA1993?
NA1993 is the identification number for Combustible liquid, n.o.s.; Compounds, cleaning liquid; Compounds, tree killing, liquid or Compounds, weed killing, liquid; Diesel fuel; Fuel oil in the DOT Hazardous Materials Table (49 CFR §172.101).
What hazard class is NA1993?
NA1993 is listed under hazard class Comb liq, 3.
What packing group is NA1993?
Packing group for NA1993: III, I, II. Where several rows exist, the packing group that fits your material decides which row applies.