Hazmat UN Number Lookup

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🏷️ Primary Hazard Class Filter

UN3216

Persulfates, inorganic, aqueous solution, n.o.s

Oxidizers

Class 5.1PG III

CAS RegistryN/A

Hazchem / EAC1E

ERG Guide Number140

49 CFR Placards & Labels

OxidizerClass 5.1

⇩ 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)

5.1

PIH Zone

—

Packaging references (49 CFR §173.xxx)

Exceptions (col 8A)

§173.152

Non-Bulk (col 8B)

§173.203

Bulk (col 8C)

§173.241

Aircraft quantity limits (col 9)

Passenger / Rail (9A)

2.5 L

Cargo Aircraft Only (9B)

30 L

Vessel stowage (col 10)

Location (10A)

Other codes (10B)

56, 58, 133

Special provisions (col 7 — §172.102)

IB2 T4 TP1 TP29

Hazard Classification & Risks

Class 5.1 — Oxidizer. Yields oxygen and may cause or intensify the combustion of other materials (49 CFR §173.127). Packing Group III — minor danger.

Transport Regulations

Hazard class 5.1, Packing Group III. Placard/label codes: 5.1. Special provisions: IB2, T4, TP1, TP29. Packaging (49 CFR §173): exceptions §152, non-bulk §203, bulk §241. Quantity limits: passenger aircraft/rail 2.5 L, cargo aircraft only 30 L. Vessel stowage: A (other: 56, 58, 133). Classified per 49 CFR §172.101.

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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.