UN 3345 — Phenoxyacetic acid derivative pesticide, solid, poisonous
Placard: Toxic. ERG Guide 153. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 3345 At a Glance
UN 3345 (Phenoxyacetic acid derivative pesticide, solid, poisonous) is listed as DOT Class 6 Toxic and is assigned to ERG Guide 153. Use this page to review placard data, common hazards, PPE notes, isolation context, first actions, and related UN numbers.
UN 3345 is Phenoxyacetic acid derivative pesticide, solid, poisonous, a toxic phenoxyacetic pesticide solid assigned to ERG Guide 153. Dust, skin exposure and runoff control are priorities.
Hazard overview: TOXIC phenoxyacetic acid derivative pesticide solid; inhalation of dust, ingestion or skin absorption may cause injury. Dust can contaminate clothing, tools, soil and runoff. Combustible solid behavior depends on formulation and carrier.
Response guidance: For UN 3345, isolate the area, avoid skin contact and use SCBA for dust/vapor/fire. Contain pesticide runoff and verify active ingredient with SDS and ERG 153.
Firefighter training notes: Training for UN 3345 should emphasize product verification, SCBA use, exposure control, decontamination, runoff containment and SDS/shipping paper review. Use ERG 153, SDS and local SOP.
Regulatory context: Phenoxyacetic acid derivative pesticide, solid, poisonous is regulated as a hazardous material for transport and emergency response. Storage, reporting, exposure, waste and incident-notification duties depend on quantity, package type, formulation and jurisdiction; verify shipping papers, SDS and authority guidance.
Storage & handling: Phenoxyacetic acid derivative pesticide, solid, poisonous should be stored in tightly closed compatible containers or packages with ventilation, secondary containment, restricted access and SDS-based segregation from incompatible materials.
UN 3345 Quick Details
Common Hazards of UN 3345
- TOXIC phenoxyacetic acid derivative pesticide solid; inhalation of dust, ingestion or skin absorption may cause injury.
- Dust can contaminate clothing, tools, soil and runoff.
- Combustible solid behavior depends on formulation and carrier.
- Fire may produce hydrogen chloride, phenoxy/organic acid smoke and other toxic pesticide decomposition products.
- Runoff may be toxic, persistent and harmful to waterways.
- Avoid dust generation and unprotected skin contact.
- Exact active ingredient, salt/ester form and concentration must be verified from SDS.
Chemical Identity & Physical Properties
White to tan crystalline solid or powder at room temperature. Odor varies by specific compound, typically mild herbicidal or aromatic odor. May be formulated as granules or pellets.
| Also known as | Phenoxy herbicide solid2,4-D type pesticideMCPA-type herbicideChlorophenoxy pesticide solid |
| Appearance | White to tan crystalline solid or powder at room temperature. Odor varies by specific compound, typically mild herbicidal or aromatic odor. May be formulated as granules or pellets. |
| Flash Point | Not applicable (solid pesticide, typically non-flammable) |
| Boiling Point | Not applicable (decomposes before boiling, typically >200C) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | No significant reaction with water, though may slowly hydrolyze in alkaline conditions |
Fireground Response Guidance — UN 3345
Extinguishing Media
PPE Requirements
Use positive-pressure SCBA where vapor, dust, smoke or fire is present. Wear chemical-resistant gloves, boots, eye/face protection and protective clothing.
Isolation & Evacuation
First Actions for a UN 3345 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 aerosols and avoid skin or eye contact.
- Do not touch damaged containers, cylinders, packages or spilled material without proper training and PPE.
- Prevent contaminated liquid, dust, runoff, residue and decontamination waste from spreading.
- Ventilate confined spaces only after monitoring and only if properly trained and equipped.
- Use ERG Guide 153, SDS, shipping papers and monitoring to set isolation, evacuation and entry decisions.
📋 Copy & Share Field Card
UN 3345 — Phenoxyacetic acid derivative pesticide,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.