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UN identification number

UN1969: Isobutane Petroleum gases, liquefied

As listed: Isobutane see also Petroleum gases, liquefied

UN1969 appears 1 time in the Hazardous Materials Table (49 CFR §172.101). Hazard class 2.1.

ID numberUN1969
Hazard class2.1
Packing groupnot assigned
Label codes2.1

All §172.101 entries for UN1969

Proper shipping nameClassPGLabels
Isobutane see also Petroleum gases, liquefied2.1—2.1

Open any entry for packaging sections, special provisions, air limits and vessel stowage.

What it means

2.1
Class 2.1 — Flammable gas. Gases that ignite easily in air — for example propane and butane.

Label codes (column 6): 2.1 → Flammable gas label.

UN numbers are recognized for international and domestic transport.

Example basic description

UN1969, Isobutane Petroleum gases, liquefied, 2.1

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

  1. Match the name. Compare your SDS Section 14 to the proper shipping names above and pick the row with your packing group.
  2. Read the special provisions on the entry page (§172.102) — they can add limits or exceptions.
  3. Check packaging — the entry page lists the Part 173 sections for exceptions, non-bulk and bulk.
  4. Labels & placards. Placarding depends on class and quantity — see Table 1 vs Table 2.
  5. Emergency response. Find the response guide for UN1969 in the current PHMSA Emergency Response Guidebook.
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Common questions about UN1969

What is UN1969?

UN1969 is the identification number for Isobutane Petroleum gases, liquefied in the DOT Hazardous Materials Table (49 CFR §172.101).

What hazard class is UN1969?

UN1969 is listed under hazard class 2.1 (flammable gas).

What packing group is UN1969?

Packing group for UN1969: not assigned. Where several rows exist, the packing group that fits your material decides which row applies.

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Source: Hazardous Materials Table (49 CFR §172.101), eCFR.gov — current as of Oct 23, 2026. View the official table. Reference only — verify current requirements before shipping.