UNunnums
1057

UN 1057Lighters or Lighter refills cigarettes, containing flammable gas

Division 2.1

Flammable gases

Summary

UN 1057 is the UN number for lighters or Lighter refills cigarettes, containing flammable gas. It is classed in Division 2.1 (flammable gases) of Class 2 for transport. Emergency responders use ERG guide 115 or 128.

Emergency response

The guide depends on the form of the material:

  • Guide115Lighter refills containing flammable gasLighters containing flammable gas
  • Guide128Lighters, non-pressurized, containing flammable liquid

From the 2024 Emergency Response Guidebook (ERG2024), published by U.S. Department of Transportation, PHMSA. Read the full guide in the ERG or on CAMEO Chemicals.

Identification

UN number
UN 1057
Name
Lighters or Lighter refills cigarettes, containing flammable gas
Hazard class
Class 2: Gases
Division
2.1: Flammable gases
What the class covers
Gases which ignite on contact with an ignition source.

U.S. Hazardous Materials Table

3 entries share this number in 49 CFR 172.101, by name, packing group or where the shipment is going.

  • UN1057Lighters

    containing flammable gas

    Special provisions: 168

    Class
    2.1
    Packing group
    None
    Labels
    2.1

  • UN1057Lighter refills

    containing flammable gas not exceeding 4 fluid ounces (7.22 cubic inches) and 65 grams of flammable gas

    Special provisions: 169

    Class
    2.1
    Packing group
    None
    Labels
    2.1

  • NA1057Lighters

    , non-pressurized, containing flammable liquid,

    Special provisions: 168

    Class
    3
    Packing group
    II
    Labels
    3

From the eCFR edition of 49 CFR 172.101 dated 2026-10-05 (section last amended 2026-09-08). The eCFR is an editorial compilation, not the official legal edition. Read the current table.

About Class 2

Class 2 covers gases, whether compressed, liquefied, dissolved under pressure or refrigerated. Division 2.1 is flammable gases such as propane, 2.2 is non-flammable, non-toxic gases such as nitrogen, and 2.3 is toxic gases such as chlorine.

See all Class 2 UN numbers

Check the official sources

For emergency response, packaging and quantity limits, use these: