☣️ UN 1306 • CLASS 3
Wood preservatives, liquid
Placard: Flammable. 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 1306
Class: 3
Placard type: Flammable
ERG: Guide 129 (check current ERG)
Isolation: ERG 129: isolate spill area minimum 50m all directions; if tank/railcar involved in fire, isolate 800m all directions and evacuate for 1600m
Chemical & Response Details
| Also known as | Wood preservative solutionTimber treatment liquidWood treatment chemicalPreservative wood coating |
| Appearance | Liquid mixture typically amber to dark brown in color with a characteristic chemical or petroleum-like odor. May contain various biocides, fungicides, or insecticides dissolved in flammable solvents. |
| Flash Point | Varies by formulation, typically below 23C (73F) for Class 3 flammable liquids |
| Boiling Point | Varies by solvent carrier, typically 60-150C (140-302F) depending on formulation |
| Vapor Density | Greater than 1 (heavier than air) due to organic solvent content |
| Water Reactivity | No significant reaction with water, though immiscible and may form surface layer |
| Extinguishing | Alcohol-resistant foam, dry chemical, CO2; water spray for cooling containers |
| PPE | ⚠️ Level B minimum; SCBA required in fire or confined space; chemical-resistant suit and gloves to prevent skin absorption of biocides |
| Isolation | ERG 129: isolate spill area minimum 50m all directions; if tank/railcar involved in fire, isolate 800m all directions and evacuate for 1600m |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.
- Vapors may form explosive mixtures with air.
- Vapors may travel to source of ignition and flash back.
- Most vapors are heavier than air. They will spread along the ground and collect in low or confined areas
- Vapor explosion hazard indoors, outdoors or in sewers.
- Those substances designated with a (P) may polymerize explosively when heated or involved in a fire.
- Runoff to sewer 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
- Keep unauthorized personnel away.
- Stay upwind, uphill and/or upstream.
- Ventilate closed spaces before entering, but only if properly trained and equipped.
- Isolate spill or leak area for at least 50 meters (150 feet) in all directions.
- Consider initial downwind evacuation for at least 300 meters (1000 feet).
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UN 1306 — Wood preservatives, liquid HAZMAT RADIO NOTE — UN 1306
Product: Wood preservatives, liquid
Class 3 / Flammable / ERG 129
PPE: Level B minimum; SCBA required in fire or confined space; chemical-resistant suit and gloves to prevent skin absorption of biocides
ISOLATION: ERG 129: isolate spill area minimum 50m all directions; if tank/railcar involved in fire, isolate 800m all directions and evacuate for 1600m
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 1306 — Wood preservatives, liquid
Class: 3 | Placard: Flammable | ERG Guide: 129
Appearance: Liquid mixture typically amber to dark brown in color with a characteristic chemical or petroleum-like odor. May contain various biocides, fungicides, or insecticides dissolved in flammable solvents.
Water Reactivity: No significant reaction with water, though immiscible and may form surface layer
Extinguishing: Alcohol-resistant foam, dry chemical, CO2; water spray for cooling containers
PPE: Level B minimum; SCBA required in fire or confined space; chemical-resistant suit and gloves to prevent skin absorption of biocides
Isolation: ERG 129: isolate spill area minimum 50m all directions; if tank/railcar involved in fire, isolate 800m all directions and evacuate for 1600m
— Key Hazards —
• HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.
• Vapors may form explosive mixtures with air.
• Vapors may travel to source of ignition and flash back.
— First Actions —
• CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper
• Keep unauthorized personnel away.
• Stay upwind, uphill and/or upstream.
• Ventilate closed spaces before entering, but only if properly trained and equipped.
SOURCE: allfirefighter.com/hazmat/un/1306 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1306 Wood preservatives, liquid Cls3 ERG129 | allfirefighter.com/hazmat/un/1306SMS / 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/1306
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FAQ
HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along the ground and collect in low or confined areas Vapor explosion hazard indoors, outdoors or in sewers. Those substances designated with a (P) may polymerize explosively when heated or involved in a fire. Runoff to sewer 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 Keep unauthorized personnel away. Stay upwind, uphill and/or upstream.
Level B minimum; SCBA required in fire or confined space; chemical-resistant suit and gloves to prevent skin absorption of biocides
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 129 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.