UN 2001 — Cobalt naphthenates, powder
Placard: Flammable Solid. ERG Guide 133. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 2001 is Cobalt naphthenates, powder, a flammable solid/powder entry assigned to ERG Guide 133. Dust generation can increase fire and exposure hazards.
Hazard overview: FLAMMABLE/combustible powder; dust may ignite by heat, sparks or flame. Dust generation may increase fire and inhalation hazards. Cobalt compound dust can irritate respiratory tract, skin and eyes and may create toxic exposure concerns.
Response guidance: For a UN 2001 incident, verify the product with shipping papers, container markings, SDS and ERG Guide 133. Establish incident command, isolate the area, stay upwind, control ignition or downwind hazards, cool exposed containers from a protected distance when appropriate and base entry decisions on monitoring and local SOP.
Firefighter training notes: Training for UN 2001 should emphasize fire behavior, exposure routes, air monitoring, PPE selection, evacuation, runoff control and ERG/SDS verification. Use ERG 133, SDS and local SOP.
Regulatory context: Cobalt naphthenates, powder is regulated as a hazardous material for transportation and emergency response purposes. Storage, workplace exposure, emergency planning, spill reporting and waste handling requirements vary by exact product, concentration, quantity and jurisdiction. Verify current requirements through shipping papers, SDS, container markings and applicable DOT, OSHA, EPA, NFPA, state or local authority guidance.
Storage & handling: Cobalt naphthenates, powder should be stored in a cool, dry, ventilated area away from heat, sparks, flames, oxidizers and incompatible materials. Limit accumulation and protect from friction, impact and dust generation where applicable.
UN 2001 Quick Details
Common Hazards of UN 2001
- FLAMMABLE/combustible powder; dust may ignite by heat, sparks or flame.
- Dust generation may increase fire and inhalation hazards.
- Cobalt compound dust can irritate respiratory tract, skin and eyes and may create toxic exposure concerns.
- Fire may produce irritating/toxic smoke and metal-containing residues.
- Runoff may carry cobalt-containing contamination.
- Containers may rupture or fail when heated.
- Exact dust explosibility and toxicity should be confirmed from SDS.
Chemical Identity & Physical Properties
Purple to reddish-brown powder or solid mass with a mild hydrocarbon odor. Combustible solid at room temperature.
| Also known as | Cobalt naphthenateNaphthenic acids, cobalt saltsCobalt(II) naphthenateCobalt 2-ethylhexanoate |
| CAS Number | 61789-51-3 |
| Appearance | Purple to reddish-brown powder or solid mass with a mild hydrocarbon odor. Combustible solid at room temperature. |
| Flash Point | Not applicable (combustible solid) |
| Boiling Point | Not applicable (decomposes) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | No significant reaction with water, but may release heat upon dissolution |
Fireground Response Guidance — UN 2001
Extinguishing Media
PPE Requirements
Use structural firefighting PPE with SCBA for fire or smoke. For spill handling without fire, use gloves, eye protection and respiratory protection if dust or residues are present.
Isolation & Evacuation
First Actions for a UN 2001 Incident
- CALL 911. Then call the emergency response telephone number on the shipping paper, if available.
- Keep unauthorized personnel away.
- Stay upwind, uphill and/or upstream.
- Avoid breathing vapors, gas, smoke, mist or dust and avoid skin or eye contact.
- Avoid friction, sparks, heat and dust generation; watch for rapid burning or re-ignition.
- Do not touch damaged containers or spilled/released material unless properly trained and wearing appropriate protective equipment.
- Ventilate closed spaces before entering, but only if properly trained, equipped, monitored and authorized by incident command.
- Isolate the release or spill area and expand the perimeter for fire involvement, vapor accumulation, cylinder/tank heating or unknown product identity.
- Use ERG Guide 133, shipping papers, SDS, air monitoring and incident command for protective actions.
📋 Copy & Share Field Card
UN 2001 — Cobalt naphthenates, powderUse 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.