☣️ UN 3419 • CLASS 8
UN 3419 — Boron trifluoride acetic acid complex, solid
Placard: Corrosive. ERG Guide 157. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
🚒☣️
⚠️ 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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UN 3419 Quick Details
UN 3419
Product name: Boron trifluoride acetic acid complex, solid
DOT Class: 8
Placard type: Corrosive
ERG Guide: 157 (check current ERG)
Initial isolation: ERG 157: isolate 25-50m initial; large spill 800m downwind evacuation day, 1600m night
Common Hazards of UN 3419
- TOXIC and/or CORROSIVE; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance
- Reaction with water or moist air may release toxic, corrosive or flammable gases.
- Reaction with water may generate much heat that will increase the concentration of fumes in the air.
- Fire will 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
- UN1802, UN2032, UN3084, UN3093, UN1796 (above 50%), UN1826 (above 50%), and UN2031 (above
- Vapors may accumulate in confined areas (basement, tanks, hopper/tank cars, etc.).
Chemical Identity & Physical Properties
| Also known as | Boron trifluoride acetate complexBF3 acetic acid complexTrifluoroborane acetic acid adduct |
| CAS Number | 373-61-5 |
| Appearance | White to off-white crystalline solid with a pungent, acetic acid-like odor at room temperature. |
| Flash Point | Not applicable (non-flammable solid) |
| Boiling Point | Decomposes before boiling, releases acetic acid and boron trifluoride |
| Vapor Density | Not applicable (solid, but vapors heavier than air upon decomposition) |
| Water Reactivity | Reacts with water releasing corrosive vapors (acetic acid, HF); generates heat |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 3419
Extinguishing Media
Dry chemical, CO2, dry sand; avoid water-based agents
PPE Requirements
⚠️ Level B minimum; full-face SCBA required; chemical-resistant suit for liquid/solid contact
Isolation & Evacuation
ERG 157: isolate 25-50m initial; large spill 800m downwind evacuation day, 1600m night
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 157).
First Actions for a UN 3419 Incident
- 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 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 3419 — Boron trifluoride acetic acid complex, sHAZMAT RADIO NOTE — UN 3419
Product: Boron trifluoride acetic acid complex, solid
Class 8 / Corrosive / ERG 157
PPE: Level B minimum; full-face SCBA required; chemical-resistant suit for liquid/solid contact
ISOLATION: ERG 157: isolate 25-50m initial; large spill 800m downwind evacuation day, 1600m night
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 3419 — Boron trifluoride acetic acid complex, solid
Class: 8 | Placard: Corrosive | ERG Guide: 157
Appearance: White to off-white crystalline solid with a pungent, acetic acid-like odor at room temperature.
Water Reactivity: Reacts with water releasing corrosive vapors (acetic acid, HF); generates heat
Extinguishing: Dry chemical, CO2, dry sand; avoid water-based agents
PPE: Level B minimum; full-face SCBA required; chemical-resistant suit for liquid/solid contact
Isolation: ERG 157: isolate 25-50m initial; large spill 800m downwind evacuation day, 1600m night
— Key Hazards —
• TOXIC and/or CORROSIVE; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance
• Reaction with water or moist air may release toxic, corrosive or flammable gases.
• Reaction with water may generate much heat that will increase the concentration of fumes in the air.
— 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/3419 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN3419 Boron trifluoride acetic acid complex, solid Cls8 ERG157 | allfirefighter.com/hazmat/un/3419SMS / 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/3419
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Frequently Asked Questions about UN 3419
TOXIC and/or CORROSIVE; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance Reaction with water or moist air may release toxic, corrosive or flammable gases. Reaction with water may generate much heat that will increase the concentration of fumes in the air. Fire will 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 UN1802, UN2032, UN3084, UN3093, UN1796 (above 50%), UN1826 (above 50%), and UN2031 (above Vapors may accumulate in confined areas (basement, tanks, hopper/tank cars, etc.).
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; full-face SCBA required; chemical-resistant suit for liquid/solid contact
Water reactivity: Reacts with water releasing corrosive vapors (acetic acid, HF); generates heat. Recommended extinguishing: Dry chemical, CO2, dry sand; avoid water-based agents.
ERG Guide 157 recommendation: ERG 157: isolate 25-50m initial; large spill 800m downwind evacuation day, 1600m night
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 157 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.