☣️ UN 2688 • CLASS 6
UN 2688 — 1-Bromo-3-chloropropane
Placard: Toxic. ERG Guide 159. 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 2688 Quick Details
UN 2688
Product name: 1-Bromo-3-chloropropane
DOT Class: 6
Placard type: Toxic
ERG Guide: 159 (check current ERG)
Initial isolation: ERG 159: Isolate spill area 50m in all directions; evacuate downwind area for at least 300m; increase distances for large spills or fires
Common Hazards of UN 2688
- Inhalation of vapors or dust is extremely irritating.
- May cause burning of eyes and lachrymation (flow of tears).
- May cause coughing, difficult breathing and nausea.
- Brief exposure effects last only a few minutes.
- Exposure in an enclosed area may be very harmful.
- Fire will produce irritating, corrosive and/or toxic gases.
- Runoff from fire control or dilution water may cause environmental contamination.
- Some of these materials may burn, but none ignite readily.
Chemical Identity & Physical Properties
| Also known as | 1-Bromo-3-chloropropane3-Bromo-1-chloropropaneTrimethylene bromochlorideBCPPropane, 1-bromo-3-chloro- |
| CAS Number | 109-70-6 |
| Appearance | Colorless to pale yellow liquid with a pungent, irritating odor. Denser than water and will sink. |
| Flash Point | 105°F (41°C) |
| Boiling Point | 143°C (289°F) |
| Vapor Density | 5.4 (much heavier than air) |
| Water Reactivity | No significant reaction with water; slightly soluble |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 2688
Extinguishing Media
Alcohol-resistant foam, dry chemical, CO2; water spray for cooling containers
PPE Requirements
⚠️ Level B minimum; SCBA required in confined spaces or high vapor concentrations; chemical-resistant gloves and clothing mandatory
Isolation & Evacuation
ERG 159: Isolate spill area 50m in all directions; evacuate downwind area for at least 300m; increase distances for large spills or fires
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 159).
First Actions for a UN 2688 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
- Consider initial downwind evacuation for at least 100 meters (330 feet).
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📋 Copy & Share Field Card
UN 2688 — 1-Bromo-3-chloropropaneHAZMAT RADIO NOTE — UN 2688
Product: 1-Bromo-3-chloropropane
Class 6 / Toxic / ERG 159
PPE: Level B minimum; SCBA required in confined spaces or high vapor concentrations; chemical-resistant gloves and clothing mandatory
ISOLATION: ERG 159: Isolate spill area 50m in all directions; evacuate downwind area for at least 300m; increase distances for large spills or fires
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 2688 — 1-Bromo-3-chloropropane
Class: 6 | Placard: Toxic | ERG Guide: 159
Appearance: Colorless to pale yellow liquid with a pungent, irritating odor. Denser than water and will sink.
Water Reactivity: No significant reaction with water; slightly soluble
Extinguishing: Alcohol-resistant foam, dry chemical, CO2; water spray for cooling containers
PPE: Level B minimum; SCBA required in confined spaces or high vapor concentrations; chemical-resistant gloves and clothing mandatory
Isolation: ERG 159: Isolate spill area 50m in all directions; evacuate downwind area for at least 300m; increase distances for large spills or fires
— Key Hazards —
• Inhalation of vapors or dust is extremely irritating.
• May cause burning of eyes and lachrymation (flow of tears).
• May cause coughing, difficult breathing and nausea.
— 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/2688 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN2688 1-Bromo-3-chloropropane Cls6 ERG159 | allfirefighter.com/hazmat/un/2688SMS / 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/2688
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Frequently Asked Questions about UN 2688
Inhalation of vapors or dust is extremely irritating. May cause burning of eyes and lachrymation (flow of tears). May cause coughing, difficult breathing and nausea. Brief exposure effects last only a few minutes. Exposure in an enclosed area may be very harmful. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may cause environmental contamination. Some of these materials may burn, but none ignite readily.
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 confined spaces or high vapor concentrations; chemical-resistant gloves and clothing mandatory
Water reactivity: No significant reaction with water; slightly soluble. Recommended extinguishing: Alcohol-resistant foam, dry chemical, CO2; water spray for cooling containers.
ERG Guide 159 recommendation: ERG 159: Isolate spill area 50m in all directions; evacuate downwind area for at least 300m; increase distances for large spills or fires
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 159 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.