☣️ UN 2210 • CLASS 4
Maneb preparation, with not less than 60% maneb
Placard: Spontaneously Combustible. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
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⚠️ This page is a quick-reference aid. For real incidents: stage upwind, isolate, deny entry, request Hazmat early, and consult the current ERG + SOP/SOG.
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Quick details
UN 2210
Class: 4
Placard type: Spontaneously Combustible
ERG: Guide 135 (check current ERG)
Isolation: ERG 135: isolate spill area at least 25m in all directions; for large spills consider initial evacuation 100m; if fire isolate 800m and evacuate downwind
Chemical & Response Details
| 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 |
| Extinguishing | Dry chemical, CO2, sand, or dry earth; water spray may be used from distance to cool containers |
| PPE | ⚠️ Level B minimum; SCBA and chemical-resistant protective clothing required; avoid inhalation of decomposition products |
| Isolation | ERG 135: isolate spill area at least 25m in all directions; for large spills consider initial evacuation 100m; if fire isolate 800m and evacuate downwind |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- Flammable/combustible material.
- May ignite on contact with moist air or moisture.
- May burn rapidly with flare-burning effect.
- Some react vigorously or explosively on contact with water.
- Some may decompose explosively when heated or involved in a fire.
- May re-ignite after fire is extinguished.
- Runoff may create fire or explosion hazard.
- Containers may explode when heated.
First actions (field-minded)
- CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper
- Stay upwind, uphill and/or upstream.
- Keep unauthorized personnel away.
- Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters
- For highlighted materials: see Table 1 - Initial Isolation and Protective Action Distances.
- For non-highlighted materials: increase the immediate precautionary measure distance, in the downwind
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UN 2210 — Maneb preparation, with not less than 60 HAZMAT RADIO NOTE — UN 2210
Product: Maneb preparation, with not less than 60% maneb
Class 4 / Spontaneously Combustible / ERG 135
PPE: Level B minimum; SCBA and chemical-resistant protective clothing required; avoid inhalation of decomposition products
ISOLATION: ERG 135: isolate spill area at least 25m in all directions; for large spills consider initial evacuation 100m; if fire isolate 800m and evacuate downwind
ACTION: Stage upwind · Isolate · Deny entry · Request HazmatRADIO
Use for: Quick radio or face-to-face size-up. Short, structured, field-ready.
=== IC HAZMAT BRIEFING ===
UN 2210 — Maneb preparation, with not less than 60% maneb
Class: 4 | Placard: Spontaneously Combustible | ERG Guide: 135
Appearance: Yellow to brownish powder or granules with a faint sulfurous odor. Solid at room temperature. Fungicide formulation.
Water Reactivity: May decompose on contact with moisture, releasing toxic fumes and heat; avoid prolonged water contact
Extinguishing: Dry chemical, CO2, sand, or dry earth; water spray may be used from distance to cool containers
PPE: Level B minimum; SCBA and chemical-resistant protective clothing required; avoid inhalation of decomposition products
Isolation: ERG 135: isolate spill area at least 25m in all directions; for large spills consider initial evacuation 100m; if fire isolate 800m and evacuate downwind
— Key Hazards —
• Flammable/combustible material.
• May ignite on contact with moist air or moisture.
• May burn rapidly with flare-burning effect.
— First Actions —
• CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper
• Stay upwind, uphill and/or upstream.
• Keep unauthorized personnel away.
• Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters
SOURCE: allfirefighter.com/hazmat/un/2210 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN2210 Maneb preparation, with not less than 60% maneb Cls4 ERG135 | allfirefighter.com/hazmat/un/2210SMS / 160 CHAR
Use for: Quick text to command or incoming units. Fits in a single SMS. Includes link to full page.
⚠️ Quick-reference only. Always use current ERG + SOP/SOG for incident-specific actions. Page: https://allfirefighter.com/hazmat/un/2210
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FAQ
Flammable/combustible material. May ignite on contact with moist air or moisture. May burn rapidly with flare-burning effect. Some react vigorously or explosively on contact with water. Some may decompose explosively when heated or involved in a fire. May re-ignite after fire is extinguished. Runoff may create fire or explosion hazard. Containers may explode when heated.
CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper Stay upwind, uphill and/or upstream. Keep unauthorized personnel away.
Level B minimum; SCBA and chemical-resistant protective clothing required; avoid inhalation of decomposition products
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 135 and your department SOP/SOG for incident-specific protective actions.
Sources (high level): DOT/PHMSA marking & class concepts + ERG usage principles. This page does not reproduce ERG guide text—always consult the current ERG for incident-specific protective actions.