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HomeUN NumbersClass 8UN1829
Hazard Class 8Packing Group I

UN Number

UN1829

Sulfur trioxide, stabilized

Official source: 49 CFR 172.101 (eCFR)

Hazardous Materials Table entry

One row in 49 CFR 172.101 for UN1829.

Sym.DescriptionClassPGLabelsSpecial provisions8A8B8C9A9B10A10B
+Sulfur trioxide, stabilized8I8, 6.12, 387, B9, B14, B32, B49, B77, N34, T20, TP4, TP13, TP25, TP26, TP38, TP45None227244ForbiddenForbiddenA25, 40, 53, 58
  • 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).

Class 8 — Corrosive Material

See the full class list

"Corrosive material" (Class 8) is a liquid or solid that causes irreversible damage to human skin at the site of contact within a specified period of time, or a liquid (or solid that may become liquid in transportation) with a severe corrosion rate on steel or aluminum.

Source: 49 CFR 173.136 (eCFR).

Previous / next UN number

UN1828Sulfur chloridesUN1830Sulfuric acid with more than 51 percent acid

Nearby Class 8 UN Numbers

UN1825Sodium monoxideUN1826Nitrating acid mixtures, spent with more than 50 percent nitric acidUN1827Stannic chloride, anhydrousUN1831Sulfuric acid, fuming with less than 30 percent free sulfur trioxideUN1832Sulfuric acid, spentUN1833Sulfurous acid
View the full Class 8 list →

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