UN 3348 — Phenoxyacetic acid derivative pesticide, liquid, poisonous
Placard: Toxic. ERG Guide 153. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 3348 is Phenoxyacetic acid derivative pesticide, liquid, poisonous, a toxic phenoxyacetic pesticide liquid assigned to ERG Guide 153. Exact active ingredient and solvent must be verified.
Hazard overview: TOXIC phenoxyacetic acid derivative pesticide liquid; inhalation, ingestion or skin absorption may cause injury. Combustibility depends on formulation and carrier solvent. Liquid can contaminate clothing, soil, drains and waterways.
Response guidance: For UN 3348, 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 3348 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, liquid, 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, liquid, 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 3348 Quick Details
Common Hazards of UN 3348
- TOXIC phenoxyacetic acid derivative pesticide liquid; inhalation, ingestion or skin absorption may cause injury.
- Combustibility depends on formulation and carrier solvent.
- Liquid can contaminate clothing, soil, drains and waterways.
- Fire may produce hydrogen chloride, toxic pesticide smoke and irritating/corrosive gases.
- Runoff may be toxic, persistent and environmentally harmful.
- Avoid unprotected contact and prevent spread to waterways.
- Exact active ingredient, salt/ester form, solvent and concentration must be verified from SDS.
Chemical Identity & Physical Properties
Clear to amber-colored liquid with mild aromatic or phenolic odor. May be viscous depending on formulation concentration. Liquid at room temperature.
| Also known as | Phenoxy herbicide solution2,4-D liquid formulationMCPA pesticide liquidPhenoxyalkanoic acid pesticide |
| Appearance | Clear to amber-colored liquid with mild aromatic or phenolic odor. May be viscous depending on formulation concentration. Liquid at room temperature. |
| Flash Point | Varies by formulation, typically 60-93C (140-200F) for common solvent-based products |
| Boiling Point | Varies by carrier solvent, typically 100-200C (212-392F) depending on formulation |
| Vapor Density | Greater than 1 (heavier than air) for most organic solvent carriers |
| Water Reactivity | No significant reaction with water, though may slowly hydrolyze in alkaline conditions |
Fireground Response Guidance — UN 3348
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 3348 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 3348 — 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.