UN 3085 — Oxidizing solid, corrosive, n.o.s.
Placard: Oxidizer. ERG Guide 140. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 3085 is Oxidizing solid, corrosive, n.o.s., a broad oxidizing corrosive solid assigned to ERG Guide 140. Contamination can intensify fire or decomposition.
Hazard overview: OXIDIZING and CORROSIVE solid, n.o.s.; can accelerate burning and cause severe contact burns. May decompose violently if heated, confined or contaminated. Contact with fuels, organics, oils, reducing agents or combustible material can create fire or explosion risk.
Response guidance: For UN 3085, isolate the area, keep combustibles/reducing agents away and identify the exact product. Use oxidizer-compatible tactics and contain runoff under ERG 140.
Firefighter training notes: Training for UN 3085 should emphasize product verification, incompatible media, dust control, SCBA use, runoff containment and escalation criteria. Use ERG 140, SDS and local SOP.
Regulatory context: Oxidizing solid, corrosive, n.o.s. is regulated as a hazardous material for transport and emergency response. Storage, reporting, exposure, waste and incident-notification duties depend on quantity, formulation and jurisdiction; verify shipping papers, SDS and authority guidance.
Storage & handling: Oxidizing solid, corrosive, n.o.s. should be stored in compatible oxidizer/corrosive-rated containers away from combustibles, organics, fuels, reducing agents, moisture-sensitive materials and contamination.
UN 3085 Quick Details
Common Hazards of UN 3085
- OXIDIZING and CORROSIVE solid, n.o.s.; can accelerate burning and cause severe contact burns.
- May decompose violently if heated, confined or contaminated.
- Contact with fuels, organics, oils, reducing agents or combustible material can create fire or explosion risk.
- Dust or solution can burn eyes, skin and respiratory tissue.
- Fire may release toxic/corrosive gases.
- Runoff may be oxidizing, corrosive and harmful to waterways.
- Exact product and water compatibility must be verified from SDS.
Chemical Identity & Physical Properties
Variable appearance depending on specific chemical; typically a solid powder, granules, or crystals that may be white, colored, or colorless. May have irritating or corrosive odor. This is a shipping classification for multiple chemicals.
| Also known as | Oxidizing solid corrosive NOSOxidizing corrosive solid not otherwise specifiedUN3085Class 5.1 corrosive oxidizer |
| Appearance | Variable appearance depending on specific chemical; typically a solid powder, granules, or crystals that may be white, colored, or colorless. May have irritating or corrosive odor. This is a shipping classification for multiple chemicals. |
| Flash Point | Not applicable (oxidizing solid, non-flammable but supports combustion) |
| Boiling Point | Variable depending on specific substance |
| Vapor Density | Not applicable (solid material) |
| Water Reactivity | Variable; some materials may react with water generating heat or corrosive solutions. Consult specific chemical information. |
Fireground Response Guidance — UN 3085
Extinguishing Media
PPE Requirements
Use positive-pressure SCBA and chemical-resistant protective clothing. Level A or B may be needed for unknown product, heavy vapor/dust or splash risk.
Isolation & Evacuation
First Actions for a UN 3085 Incident
- Call 911 and the emergency response number on the shipping paper, if available.
- Keep unauthorized personnel away and establish incident command.
- Stay upwind, uphill and upstream.
- Avoid breathing vapor, dust, gas, mist, smoke or fumes and avoid skin or eye contact.
- Keep water or moisture contact controlled when it may increase fuming, heat or corrosive runoff.
- Do not touch damaged containers or spilled material without proper training and PPE.
- Prevent contaminated liquid, dust, runoff and decontamination waste from spreading.
- Ventilate confined spaces only after monitoring and only if properly trained and equipped.
- Use ERG Guide 140, SDS, shipping papers and monitoring to set isolation, evacuation and entry decisions.
📋 Copy & Share Field Card
UN 3085 — Oxidizing solid, corrosive, n.o.s.Use for: Quick radio or face-to-face size-up. Short, structured, field-ready.
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
Use for: Quick text to command or incoming units. Fits in a single SMS.