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HomeUN NumbersClass 2.3UN2191
Hazard Class 2.3

UN Number

UN2191

Sulfuryl fluoride

Official source: 49 CFR 172.101 (eCFR)

Hazardous Materials Table entry

One row in 49 CFR 172.101 for UN2191.

Sym.DescriptionClassPGLabelsSpecial provisions8A8B8C9A9B10A10B
—Sulfuryl fluoride2.3—2.34None304314, 315ForbiddenForbiddenD40
  • 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

UN2190Oxygen difluoride, compressedUN2192Germane

Nearby Class 2.3 UN Numbers

UN2186Hydrogen chloride, refrigerated liquidUN2188ArsineUN2189DichlorosilaneUN2194Selenium hexafluorideUN2195Tellurium hexafluorideUN2196Tungsten hexafluoride
View the full Class 2.3 list →

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