☣️ UN 3417 • CLASS 6
UN 3417 — Xylyl bromide, solid
Placard: Toxic. ERG Guide 152. 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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UN 3417 Quick Details
UN 3417
Product name: Xylyl bromide, solid
DOT Class: 6
Placard type: Toxic
ERG Guide: 152 (check current ERG)
Initial isolation: ERG 152: isolate spill/leak area immediate 25m in all directions; large spill initial isolation 100m, protective action distance 300m downwind daytime
Common Hazards of UN 3417
- Highly toxic, may be fatal if inhaled, ingested or absorbed through skin.
- 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
- Combustible material: may burn but does not ignite readily.
- Containers may explode when heated.
- Those substances designated with a (P) may polymerize explosively when heated or involved in a fire.
Chemical Identity & Physical Properties
| Also known as | Xylyl bromideBromoxyleneDimethylbenzyl bromideα-Bromo-xylene |
| Appearance | White to pale yellow crystalline solid at room temperature. Pungent, irritating odor. Lachrymator (tear-producing agent). |
| Flash Point | Not applicable (solid) |
| Boiling Point | Approximately 212-220C (414-428F) depending on isomer |
| Vapor Density | 6.6 (heavier than air when volatilized) |
| Water Reactivity | Slowly hydrolyzes in water, releasing HBr vapors; avoid prolonged water contact |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 3417
Extinguishing Media
Dry chemical, CO2, or dry sand preferred; water spray may be used from distance to cool containers
PPE Requirements
⚠️ Level A required for spill response; SCBA mandatory; full chemical-resistant suit; avoid all skin contact due to extreme toxicity
Isolation & Evacuation
ERG 152: isolate spill/leak area immediate 25m in all directions; large spill initial isolation 100m, protective action distance 300m downwind daytime
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 152).
First Actions for a UN 3417 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.
- 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 3417 — Xylyl bromide, solidHAZMAT RADIO NOTE — UN 3417
Product: Xylyl bromide, solid
Class 6 / Toxic / ERG 152
PPE: Level A required for spill response; SCBA mandatory; full chemical-resistant suit; avoid all skin contact due to extreme toxicity
ISOLATION: ERG 152: isolate spill/leak area immediate 25m in all directions; large spill initial isolation 100m, protective action distance 300m downwind daytime
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 3417 — Xylyl bromide, solid
Class: 6 | Placard: Toxic | ERG Guide: 152
Appearance: White to pale yellow crystalline solid at room temperature. Pungent, irritating odor. Lachrymator (tear-producing agent).
Water Reactivity: Slowly hydrolyzes in water, releasing HBr vapors; avoid prolonged water contact
Extinguishing: Dry chemical, CO2, or dry sand preferred; water spray may be used from distance to cool containers
PPE: Level A required for spill response; SCBA mandatory; full chemical-resistant suit; avoid all skin contact due to extreme toxicity
Isolation: ERG 152: isolate spill/leak area immediate 25m in all directions; large spill initial isolation 100m, protective action distance 300m downwind daytime
— Key Hazards —
• Highly toxic, may be fatal if inhaled, ingested or absorbed through skin.
• Contact with molten substance may cause severe burns to skin and eyes.
• Avoid any skin contact.
— 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.
• 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/3417 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN3417 Xylyl bromide, solid Cls6 ERG152 | ERG 152: isolate spill/leak area immediate 25m in all directions; large spill in | allfirefighter.com/hazmat/un/3417SMS / 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/3417
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Frequently Asked Questions about UN 3417
Highly toxic, may be fatal if inhaled, ingested or absorbed through skin. 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 Combustible material: may burn but does not ignite readily. Containers may explode when heated. Those substances designated with a (P) may polymerize explosively when heated or involved in a fire.
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 A required for spill response; SCBA mandatory; full chemical-resistant suit; avoid all skin contact due to extreme toxicity
Water reactivity: Slowly hydrolyzes in water, releasing HBr vapors; avoid prolonged water contact. Recommended extinguishing: Dry chemical, CO2, or dry sand preferred; water spray may be used from distance to cool containers.
ERG Guide 152 recommendation: ERG 152: isolate spill/leak area immediate 25m in all directions; large spill initial isolation 100m, protective action distance 300m downwind daytime
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 152 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.