UN2257

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Author: SymbioFlows

Potassium

Official source: 49 CFR 172.101 (eCFR)

Hazardous Materials Table entry

One row in 49 CFR 172.101 for UN2257.

Sym.	Description	Class	PG	Labels	Special provisions	8A	8B	8C	9A	9B	10A	10B
—	Potassium	4.3	I	4.3	A7, A19, A20, B27, IB4, IP1, N6, N34, T9, TP7, TP33, W31	151	211	244	Forbidden	15 kg	D	13, 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

UN2256Cyclohexene UN22581,2-Propylenediamine

Nearby Class 4.3 UN Numbers

UN2010Magnesium hydride UN2011Magnesium phosphide UN2012Potassium phosphide UN2013Strontium phosphide UN2463Aluminum hydride UN2624Magnesium silicide UN2805Lithium hydride, fused solid UN2806Lithium nitride

View the full Class 4.3 list →

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