We use cookies to improve your experience and save your reports. Privacy Policy

HomeUN NumbersClass 4.3UN2950
Hazard Class 4.3Packing Group III

UN Number

UN2950

Magnesium granules, coated, particle size not less than 149 microns

Official source: 49 CFR 172.101 (eCFR)

Hazardous Materials Table entry

One row in 49 CFR 172.101 for UN2950.

Sym.DescriptionClassPGLabelsSpecial provisions8A8B8C9A9B10A10B
—Magnesium granules, coated, particle size not less than 149 microns4.3III4.3A1, A19, IB8, IP4, T1, TP33, W10015121324025 kg100 kgA13, 52, 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

UN2949Sodium hydrosulfide with not less than 25 percent water of crystallizationUN29565-tert-Butyl-2,4,6-trinitro-m-xylene or Musk xylene

Nearby Class 4.3 UN Numbers

UN2813Water-reactive solid, n.o.sUN2830Lithium ferrosiliconUN2835Sodium aluminum hydrideUN2844Calcium manganese siliconUN2965Boron trifluoride dimethyl etherateUN2968Maneb stabilized or Maneb preparations, stabilized against self-heatingUN2988Chlorosilanes, water-reactive, flammable, corrosive, n.o.sUN3078Cerium, turnings or gritty powder
View the full Class 4.3 list →

Shipping a UN2950 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.