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HomeUN NumbersClass 2.3UN3168
Hazard Class 2.3

UN Number

UN3168

Gas sample, non-pressurized, toxic, flammable, n.o.s., not refrigerated liquid

Official source: 49 CFR 172.101 (eCFR)

Hazardous Materials Table entry

One row in 49 CFR 172.101 for UN3168.

Sym.DescriptionClassPGLabelsSpecial provisions8A8B8C9A9B10A10B
—Gas sample, non-pressurized, toxic, flammable, n.o.s., not refrigerated liquid2.3—2.3, 2.16306302NoneForbidden1 LD—
  • Sym.: Column 1 symbols, 49 CFR 172.101(b).
  • Description: Column 2, the proper shipping name, 172.101(c).
  • Class: Column 3, hazard class or division, 172.101(d).
  • PG: Column 5, packing group, 172.101(f).
  • Labels: Column 6, label codes, 172.101(g).
  • Special provisions: Column 7, codes explained in 49 CFR 172.102, 172.101(h).
  • 8A / 8B / 8C: Packaging exceptions, non-bulk and bulk sections of 49 CFR part 173 (an entry of 202 means 173.202), 172.101(i).
  • 9A / 9B: Maximum quantity per package on passenger aircraft or rail, and on cargo aircraft only, 172.101(j).
  • 10A / 10B: Vessel stowage location and other stowage and handling codes, 172.101(k).

Division 2.3 — Gas Poisonous by Inhalation

See the full class list

A gas poisonous by inhalation (Division 2.3) is a gas at 20°C (68°F) or less and 101.3 kPa (14.7 psia) that is known to be so toxic to humans as to pose a hazard to health during transportation, or is presumed toxic based on laboratory animal LC50 data.

Source: 49 CFR 173.115 (eCFR).

Previous / next UN number

UN3167Gas sample, non-pressurized, flammable, n.o.s., not refrigerated liquidUN3169Gas sample, non-pressurized, toxic, n.o.s., not refrigerated liquid

Nearby Class 2.3 UN Numbers

UN3057Trifluoroacetyl chlorideUN3083Perchloryl fluorideUN3160Liquefied gas, toxic, flammable, n.o.s. Inhalation Hazard Zone AUN3162Liquefied gas, toxic, n.o.s. Inhalation Hazard Zone AUN3300Ethylene oxide and carbon dioxide mixture with more than 87 percent ethylene oxideUN3303Compressed gas, toxic, oxidizing, n.o.s. Inhalation Hazard Zone AUN3304Compressed gas, toxic, corrosive, n.o.s. Inhalation Hazard Zone A
View the full Class 2.3 list →

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