UNunnums
1376

UN 1376Iron oxide, spent, or Iron sponge, spent obtained from coal gas purification

Proper shipping name: Iron oxide, spent or Iron sponge, spent

Division 4.2

Spontaneously combustible

Summary

UN 1376 is the UN number for iron oxide, spent, or Iron sponge, spent obtained from coal gas purification. It is classed in Division 4.2 (spontaneously combustible) of Class 4 for transport. Packing group III. Emergency responders use ERG guide 135.

Emergency response

The Emergency Response Guidebook (ERG2024) guide for this number:

  • Guide135Iron oxide, spentIron sponge, spent

From the 2024 Emergency Response Guidebook (ERG2024), published by U.S. Department of Transportation, PHMSA. Read the full guide in the ERG or on CAMEO Chemicals.

Identification

UN number
UN 1376
Name
Iron oxide, spent, or Iron sponge, spent obtained from coal gas purification
Hazard class
Class 4: Flammable solids
Division
4.2: Spontaneously combustible
Packing group
III
What the class covers
Substances liable to spontaneous combustion.

U.S. Hazardous Materials Table

The entry for this number in 49 CFR 172.101.

  • UN1376Iron oxide, spent or Iron sponge, spent

    obtained from coal gas purification

    Special provisions: B18, B134, IB8, IP21, T1, TP33, W100

    Class
    4.2
    Packing group
    III
    Labels
    4.2

From the eCFR edition of 49 CFR 172.101 dated 2026-10-05 (section last amended 2026-09-08). The eCFR is an editorial compilation, not the official legal edition. Read the current table.

About Class 4

Class 4 covers flammable solids and other substances that can catch fire. Division 4.1 is flammable solids and self-reactive substances, 4.2 is substances that can spontaneously combust in air, and 4.3 is substances that give off flammable gas when wet.

See all Class 4 UN numbers

Check the official sources

For emergency response, packaging and quantity limits, use these: