☣️ UN 3415 • CLASS 6
UN 3415 — Sodium fluoride, solution
Placard: Toxic. ERG Guide 154. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
🚒☣️
⚠️ Verification required:
Broad or variable material category; verify exact product, SDS and shipping papers.
⚠️ 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.
UN 3415 is Sodium fluoride, solution, a toxic aqueous fluoride salt solution. It is not a flammable liquid, but exposure can cause systemic fluoride poisoning and corrosive injury depending on concentration.
Hazard overview: UN 3415 may injure skin, eyes, respiratory tract or gastrointestinal system after contact, inhalation of mist or ingestion. Fluoride exposure can have serious systemic effects, and fire may produce toxic or corrosive decomposition products.
Response guidance: For UN 3415, isolate the spill area, avoid splashes or aerosols and keep liquid out of drains and waterways. Use water spray, fog or compatible agents for surrounding fires, and handle contaminated runoff as toxic. Medical evaluation is important for significant fluoride exposure.
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UN 3415 Quick Details
UN 3415
Product name: Sodium fluoride, solution
DOT Class: 6
Placard type: Toxic
ERG Guide: 154 (check current ERG)
Initial isolation: ERG 154: Initial isolation 25m in all directions; protective action distance 0.1km daytime, 0.2km nighttime for small spills; increase distances for large spills or fire involvement
Common Hazards of UN 3415
- TOXIC and/or CORROSIVE; inhalation, ingestion or skin contact with material may cause severe injury
- Contact with molten substance may cause severe burns to skin and eyes.
- Avoid any skin contact.
- Fire may produce irritating, corrosive and/or toxic gases.
- Runoff from fire control or dilution water may be corrosive and/or toxic and cause environmental
- Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive
- Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.).
- Corrosives in contact with metals may evolve flammable hydrogen gas.
Chemical Identity & Physical Properties
UN 3415 is generally a clear to slightly cloudy aqueous liquid with little odor. It is miscible with water and does not support combustion, but concentration controls the severity of toxic and corrosive effects.
| Also known as | Sodium fluoride solutionDisodium difluoride solutionNatrium fluoride solutionNaF solution |
| CAS Number | 7681-49-4 |
| Appearance | Clear to slightly cloudy aqueous solution, odorless or faint chemical odor. Typically colorless liquid at room temperature. |
| Flash Point | Not applicable (aqueous solution, non-flammable) |
| Boiling Point | Approximately 100C (212F), similar to water depending on concentration |
| Vapor Density | Not applicable (aqueous solution) |
| Water Reactivity | Already in aqueous solution; no significant reaction with additional water |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 3415
Extinguishing Media
Water spray, fog, or regular foam acceptable for fire control; solution itself does not support combustion
PPE Requirements
⚠️ Level B minimum recommended; chemical-resistant gloves, splash goggles, face shield; SCBA for enclosed spaces or spills; acid-resistant protective clothing
Use SCBA where mist or confined-space exposure is possible, plus chemical-resistant gloves, splash goggles or face shield and protective clothing. For large spills or unknown concentration, Level B protection is appropriate.
Isolation & Evacuation
ERG 154: Initial isolation 25m in all directions; protective action distance 0.1km daytime, 0.2km nighttime for small spills; increase distances for large spills or fire involvement
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 154).
First Actions for a UN 3415 Incident
- 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 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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📋 Copy & Share Field Card
UN 3415 — Sodium fluoride, solutionHAZMAT RADIO NOTE — UN 3415
Product: Sodium fluoride, solution
Class 6 / Toxic / ERG 154
PPE: Level B minimum recommended; chemical-resistant gloves, splash goggles, face shield; SCBA for enclosed spaces or spills; acid-resistant protective clothing
ISOLATION: ERG 154: Initial isolation 25m in all directions; protective action distance 0.1km daytime, 0.2km nighttime for small spills; increase distances for large spills or fire involvement
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 3415 — Sodium fluoride, solution
Class: 6 | Placard: Toxic | ERG Guide: 154
Appearance: Clear to slightly cloudy aqueous solution, odorless or faint chemical odor. Typically colorless liquid at room temperature.
Water Reactivity: Already in aqueous solution; no significant reaction with additional water
Extinguishing: Water spray, fog, or regular foam acceptable for fire control; solution itself does not support combustion
PPE: Level B minimum recommended; chemical-resistant gloves, splash goggles, face shield; SCBA for enclosed spaces or spills; acid-resistant protective clothing
Isolation: ERG 154: Initial isolation 25m in all directions; protective action distance 0.1km daytime, 0.2km nighttime for small spills; increase distances for large spills or fire involvement
— Key Hazards —
• TOXIC and/or CORROSIVE; inhalation, ingestion or skin contact with material may cause severe injury
• Contact with molten substance may cause severe burns to skin and eyes.
• Avoid any skin contact.
— First Actions —
• 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 in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters
SOURCE: allfirefighter.com/hazmat/un/sodium-fluoride-solution-un-3415 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
UN3415 Sodium fluoride, solution Cls6 ERG154 | allfirefighter.com/hazmat/un/sodium-fluoride-solution-un-3415SMS / 160 CHAR
Use for: Quick text to command or incoming units. Fits in a single SMS.
⚠️ Quick-reference only. Always use current ERG + SOP/SOG for incident-specific actions.
Page: https://allfirefighter.com/hazmat/un/sodium-fluoride-solution-un-3415
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Frequently Asked Questions about UN 3415
UN 3415 is Sodium fluoride, solution. It should be identified from shipping papers, markings and the SDS before responders work near the release.
ERG Guide 154 applies to UN 3415 for initial isolation, protective actions and first-response guidance.
UN 3415 is not primarily classified as flammable, but fire may produce toxic or corrosive gases and containers may become dangerous when heated.
Use SCBA where mist or confined-space exposure is possible, plus chemical-resistant gloves, splash goggles or face shield and protective clothing. For large spills or unknown concentration, Level B protection is appropriate.
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.