UN 2968 — Maneb preparation, stabilized
Placard: Dangerous When Wet. ERG Guide 135. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 2968 is Maneb preparation, stabilized, a stabilized pesticide preparation assigned to ERG Guide 135. Moisture, dust and formulation review are important.
Hazard overview: DANGEROUS WHEN WET stabilized pesticide preparation; moisture or heat may increase decomposition hazards. May release flammable or toxic gases depending on formulation and contamination. Dust can contaminate clothing, tools, soil and runoff.
Response guidance: For UN 2968, isolate the area, avoid skin contact and use SCBA where dust, vapor, mist or fire is present. Contain runoff and verify controls with SDS and ERG 135.
Firefighter training notes: Training for UN 2968 should emphasize exposure routes, SCBA use, vapor/dust monitoring, decontamination, runoff containment and SDS verification. Use ERG 135, SDS and local SOP.
Regulatory context: Maneb preparation, stabilized 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: Maneb preparation, stabilized should be stored dry in tightly closed compatible containers away from moisture, heat, ignition sources and incompatible materials. Keep compatible dry media available.
UN 2968 Quick Details
Common Hazards of UN 2968
- DANGEROUS WHEN WET stabilized pesticide preparation; moisture or heat may increase decomposition hazards.
- May release flammable or toxic gases depending on formulation and contamination.
- Dust can contaminate clothing, tools, soil and runoff.
- Fire may produce sulfur oxides, nitrogen oxides, manganese compounds and toxic pesticide smoke.
- Runoff may be toxic, persistent and harmful to waterways.
- Exact stabilization, active ingredient concentration and carrier must be verified from SDS.
- Avoid dust generation, moisture exposure and unprotected skin contact.
Chemical Identity & Physical Properties
Yellow to brownish-gray powder or granular solid with a slight sulfurous odor. Solid at room temperature.
| Also known as | Manganese ethylenebis(dithiocarbamate)Maneb stabilizedManganese ethylene-1,2-bisdithiocarbamateDithane M-22Manzate |
| CAS Number | 12427-38-2 |
| Appearance | Yellow to brownish-gray powder or granular solid with a slight sulfurous odor. Solid at room temperature. |
| Flash Point | Not applicable (combustible solid, no liquid flash point) |
| Boiling Point | Not applicable (decomposes before boiling) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | May react with moisture producing flammable gases; avoid contact with water in confined spaces |
Fireground Response Guidance — UN 2968
Extinguishing Media
PPE Requirements
Use positive-pressure SCBA for fire, dust or smoke. Wear flame/chemical protection and avoid dust, friction and incompatible media.
Isolation & Evacuation
First Actions for a UN 2968 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.
- 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 135, SDS, shipping papers and monitoring to set isolation, evacuation and entry decisions.
📋 Copy & Share Field Card
UN 2968 — Maneb preparation, stabilizedUse 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.