UN 2210 — Maneb preparation, with not less than 60% maneb
Placard: Spontaneously Combustible. ERG Guide 135. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 2210 is Maneb preparation, with not less than 60% maneb, a toxic pesticide/fungicide preparation assigned to ERG Guide 135. Dust, formulation toxicity and contaminated runoff require control.
Hazard overview: TOXIC pesticide/fungicide preparation; inhalation, ingestion or skin contact may cause injury. Dust can irritate eyes, skin and respiratory tract and contaminate clothing/equipment. May decompose in fire to produce sulfur oxides, nitrogen oxides and metal-containing smoke.
Response guidance: For a UN 2210 incident, verify the product with shipping papers, container markings, SDS and ERG Guide 135. Establish incident command, isolate the area, stay upwind, control ignition or incompatibility hazards, prevent runoff or vapor spread and base entry/fire-control actions on monitoring and local SOP.
Firefighter training notes: Training for UN 2210 should emphasize exposure routes, air monitoring, PPE selection, fire behavior, decontamination, runoff containment and ERG/SDS verification. Use ERG 135, SDS and local SOP.
Regulatory context: Maneb preparation, with not less than 60% maneb is regulated as a hazardous material for transportation and emergency response purposes. Storage, workplace exposure, emergency planning, spill reporting, waste handling and environmental 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: Maneb preparation, with not less than 60% maneb should be stored in tightly closed compatible containers in a secure, ventilated toxic-material area with secondary containment, restricted access and segregation from incompatible chemicals according to SDS.
UN 2210 Quick Details
Common Hazards of UN 2210
- TOXIC pesticide/fungicide preparation; inhalation, ingestion or skin contact may cause injury.
- Dust can irritate eyes, skin and respiratory tract and contaminate clothing/equipment.
- May decompose in fire to produce sulfur oxides, nitrogen oxides and metal-containing smoke.
- Runoff may carry pesticide contamination and harm waterways.
- Combustibility depends on formulation and carrier materials.
- Containers may rupture or fail when heated.
- Exact active ingredient percentage and formulation should be confirmed from label and SDS.
Chemical Identity & Physical Properties
Yellow to brownish powder or granules with a faint sulfurous odor. Solid at room temperature. Fungicide formulation.
| Also known as | Manganese ethylenebis(dithiocarbamate)Maneb fungicideDithane M-22ManzateManganese ethylene-1,2-bisdithiocarbamate |
| CAS Number | 12427-38-2 |
| Appearance | Yellow to brownish powder or granules with a faint sulfurous odor. Solid at room temperature. Fungicide formulation. |
| Flash Point | Not applicable (combustible solid) |
| Boiling Point | Not applicable (decomposes before boiling) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | May decompose on contact with moisture, releasing toxic fumes and heat; avoid prolonged water contact |
Fireground Response Guidance — UN 2210
Extinguishing Media
PPE Requirements
Use positive-pressure SCBA for vapor, dust, mist, fire or confined-space exposure. Wear chemical-resistant gloves, eye/face protection and protective clothing selected from SDS; avoid skin contact.
Isolation & Evacuation
First Actions for a UN 2210 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 gas, vapor, dust, mist, smoke or fumes and avoid skin or eye contact.
- 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 spill or release area and expand the perimeter for fire involvement, vapor/gas spread, cylinder heating, oxidizer reaction or unknown product identity.
- Use ERG Guide 135, shipping papers, SDS, air monitoring and incident command for protective actions.
📋 Copy & Share Field Card
UN 2210 — Maneb preparation, with not less than 60Use 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.