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HomeUN NumbersClass 4.3UN1408
Hazard Class 4.3Packing Group III

UN Number

UN1408

Ferrosilicon with 30 percent or more but less than 90 percent silicon

Official source: 49 CFR 172.101 (eCFR)

Hazardous Materials Table entry

One row in 49 CFR 172.101 for UN1408.

Sym.DescriptionClassPGLabelsSpecial provisions8A8B8C9A9B10A10B
—Ferrosilicon with 30 percent or more but less than 90 percent silicon4.3III4.3, 6.1A1, A19, B6, IB8, IP4, IP7, T1, TP33, W10015121324025 kg100 kgA13, 40, 52, 53, 85, 103, 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

UN1407Cesium or CaesiumUN1409Metal hydrides, water reactive, n.o.s

Nearby Class 4.3 UN Numbers

UN1403Calcium cyanamide with more than 0.1 percent of calcium carbideUN1404Calcium hydrideUN1405Calcium silicideUN1410Lithium aluminum hydrideUN1411Lithium aluminum hydride, etherealUN1413Lithium borohydride
View the full Class 4.3 list →

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