Hazmat UN Number Lookup

Search hazardous materials database, check safety specifications, and view Emergency Response guides.

🏷️ Primary Hazard Class Filter

UN1376

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

Spontaneously Combustible

Class 4.2PG III

CAS RegistryN/A

Hazchem / EAC1Y

ERG Guide Number133

49 CFR Placards & Labels

Spontaneously CombustibleClass 4.2

⇩ SVG

Not listed as a Reportable Quantity (RQ) hazardous substance under §172.101 Appendix A.

Not listed as a Marine Pollutant under §172.101 Appendix B.

Regulatory Facts

Packing Group

III

Symbols (col 1)

—

Labels (col 6)

4.2

PIH Zone

—

Packaging references (49 CFR §173.xxx)

Exceptions (col 8A)

None

Non-Bulk (col 8B)

§173.213

Bulk (col 8C)

§173.240

Aircraft quantity limits (col 9)

Passenger / Rail (9A)

Forbidden

Cargo Aircraft Only (9B)

Forbidden

Vessel stowage (col 10)

Location (10A)

Other codes (10B)

13, 148

Special provisions (col 7 — §172.102)

B18 B134 IB8 IP21 T1 TP33 W100

Hazard Classification & Risks

Class 4.2 — Spontaneously combustible; pyrophoric (ignites within 5 minutes of air contact) or self-heating (49 CFR §173.124). Packing Group III — minor danger.

Transport Regulations

Hazard class 4.2, Packing Group III. Placard/label codes: 4.2. Special provisions: B18, B134, IB8, IP21, T1, TP33, W100. Packaging (49 CFR §173): exceptions §None, non-bulk §213, bulk §240. Quantity limits: passenger aircraft/rail Forbidden, cargo aircraft only Forbidden. Vessel stowage: E (other: 13, 148). Classified per 49 CFR §172.101.

Shortcuts:

p Printd SVGc Copy Names Copy Spilla Copy First-Aid

Source & sourcing note

Regulatory data mirrors the U.S. 49 CFR §172.101 Hazardous Materials Table and companion columns (packaging, quantity limits, vessel stowage, special provisions) as published by the U.S. Pipeline and Hazardous Materials Safety Administration (PHMSA).

Emergency-response content is drawn from the 2024 Emergency Response Guidebook (ERG), a joint publication of PHMSA, Transport Canada, and Mexico’s SCT.

The U.S. edition of the ERG and all U.S. federal regulations are public-domain works under 17 U.S.C. §105. Descriptions on this page are plain-English paraphrases; for any compliance decision, consult the authoritative text on eCFR Title 49 and the ERG at PHMSA.dot.gov. “ERG™” is attributed to PHMSA / Transport Canada / SCT and used nominatively.

Regulatory Facts

Packing Group

III

Symbols (col 1)

—

Labels (col 6)

4.2

PIH Zone

—

Packaging references (49 CFR §173.xxx)

Exceptions (col 8A)

None

Non-Bulk (col 8B)

§173.213

Bulk (col 8C)

§173.240

Aircraft quantity limits (col 9)

Passenger / Rail (9A)

Forbidden

Cargo Aircraft Only (9B)

Forbidden

Vessel stowage (col 10)

Location (10A)

Other codes (10B)

13, 148

Special provisions (col 7 — §172.102)

B18 B134 IB8 IP21 T1 TP33 W100

Source & sourcing note

Emergency-response content is drawn from the 2024 Emergency Response Guidebook (ERG), a joint publication of PHMSA, Transport Canada, and Mexico’s SCT.