HomeUN NumbersClass 4.3UN3134
Hazard Class 4.3Packing Group I/II/III

UN Number

UN3134

Water-reactive solid, toxic, n.o.s

Official source: 49 CFR 172.101 (eCFR)

Hazardous Materials Table entry

3 rows in 49 CFR 172.101 for UN3134.

Sym.DescriptionClassPGLabelsSpecial provisions8A8B8C9A9B10A10B
GWater-reactive solid, toxic, n.o.s4.3I4.3, 6.1A8, IB4, IP1, N40, W31None211242Forbidden15 kgD13, 148
GWater-reactive solid, toxic, n.o.s4.3II4.3, 6.1IB5, IP2, T3, TP33, W31, W4015121224215 kg50 kgE13, 85, 148
GWater-reactive solid, toxic, n.o.s4.3III4.3, 6.1IB8, IP4, T1, TP33, W3115121324125 kg100 kgE13, 85, 148
  • 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 4.3 — Dangerous When Wet Material

See the full class list

Dangerous when wet material (Division 4.3) is a material that, by contact with water, is liable to become spontaneously flammable or to give off flammable or toxic gas at a rate greater than 1 L per kilogram of the material, per hour.

Source: 49 CFR 173.124 (eCFR).

Previous / next UN number

UN3133Water-reactive, solid, oxidizing, n.o.sUN3135Water-reactive solid, self-heating, n.o.s.

Nearby Class 4.3 UN Numbers

UN3130Water-reactive liquid, toxic, n.o.sUN3131Water-reactive solid, corrosive, n.o.sUN3132Water-reactive solid, flammable, n.o.s.UN3148Water-reactive liquid, n.o.s.UN3170Aluminum smelting by-products or Aluminum remelting by-productsUN3208Metallic substance, water-reactive, n.o.s
View the full Class 4.3 list →

Shipping a UN3134 Stream?

SymbioFlows matches your classified waste stream with verified recovery off-takers. Get a compliance-grounded recovery analysis with market benchmarks in minutes.

Request Recovery Analysis

Reviewed by our regulatory specialist within 1 business day.