☣️ DOT Hazmat Classification
Oxidizers & Organic Peroxides
Can intensify fire and accelerate burning—cooling and isolation often critical.
⚗️
DOT CLASS 5
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Common Hazards — Class 5
- Intensifies combustion and fire spread
- Reactivity under heat/contamination
- Potential for oxygen release / decomposition
How to Recognize Class 5
- Placards indicating Oxidizer/Peroxide
- Unusually intense burning behavior
- Facility storage areas (pool supply, industrial)
First Actions Before Hazmat Team Arrives
Initial priorities for DOT Hazmat Class 5 (Oxidizers & Organic Peroxides) incidents. These are general guidelines — always verify with shipping papers, consult the current ERG, and follow your SOP/SOG.
- Isolate and keep combustibles away
- Cool exposures as directed and safe
- Request Hazmat early
- Consult ERG for protective actions
- Avoid contamination/mixing of products
What NOT To Do — Class 5
- Do not mix chemicals or runoff
- Do not store combustibles near oxidizers
- Do not treat as ordinary Class A fire
Common Examples — Class 5 Oxidizers & Organic Peroxides
Hydrogen peroxide solutionsPool chemicals (varies)Certain fertilizers (varies)
These are representative examples only. Product-specific hazards vary — always confirm via shipping papers and current ERG.
Common UN Numbers in Class 5 (Oxidizers & Organic Peroxides)
UN 1438Aluminum nitrateUN 1439Ammonium dichromateUN 1442Ammonium perchlorateUN 1444Ammonium persulphateUN 1445Barium chlorate, solidUN 1446Barium nitrateUN 1447Barium perchlorate, solidUN 1448Barium permanganateUN 1449Barium peroxideUN 1450Bromates, inorganic, n.o.s.UN 1451Caesium nitrateUN 1452Calcium chlorateUN 1453Calcium chloriteUN 1454Calcium nitrateUN 1455Calcium perchlorate
More UN numbers discoverable via the Hazmat Hub. Always consult current ERG + SOP/SOG for operations.
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FAQ — DOT Hazmat Class 5 (Oxidizers & Organic Peroxides)
They can supply oxygen or promote rapid oxidation, increasing heat release and spread.
Yes—many are oxidizers and can react dangerously when wet/contaminated; product specifics matter.
Isolation, cooling exposures if appropriate, Hazmat request, and ERG/SOP guidance.
Sources: DOT/PHMSA hazard class concepts, NFPA 704 overview, and ERG usage principles. This guide does not reproduce ERG guide text — always consult the current ERG for incident-specific protective actions.