Hazmat UN Number Lookup

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🏷️ Primary Hazard Class Filter

UN3320

Sodium borohydride and sodium hydroxide solution, with not more than 12 percent sodium borohydride and not more than 40 percent sodium hydroxide by mass

Corrosives

Class 8PG II

CAS Registry1310-73-2

Hazchem / EAC2X

ERG Guide Number154

49 CFR Placards & Labels

CorrosiveClass 8

⇩ SVG

Reportable Quantity — 10 lb (4.54 kg)

Any release meeting or exceeding this amount must be reported to the National Response Center at 1-800-424-8802 under 40 CFR 302.6 and 49 CFR 171.15.

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

Regulatory Facts

Packing Group

Symbols (col 1)

—

Labels (col 6)

PIH Zone

—

Packaging references (49 CFR §173.xxx)

Exceptions (col 8A)

§173.154

Non-Bulk (col 8B)

§173.202

Bulk (col 8C)

§173.242

Aircraft quantity limits (col 9)

Passenger / Rail (9A)

1 L

Cargo Aircraft Only (9B)

30 L

Vessel stowage (col 10)

Location (10A)

Other codes (10B)

Special provisions (col 7 — §172.102)

B2 IB2 N34 T7 TP2

Hazard Classification & Risks

Class 8 — Corrosive. Causes full-thickness skin destruction or severely corrodes steel/aluminum (49 CFR §173.136). Packing Group II — medium danger.

Transport Regulations

Hazard class 8, Packing Group II. Placard/label codes: 8. Special provisions: B2, IB2, N34, T7, TP2. Packaging (49 CFR §173): exceptions §154, non-bulk §202, bulk §242. Quantity limits: passenger aircraft/rail 1 L, cargo aircraft only 30 L. Vessel stowage: A (other: 52). 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.