☣️ UN 1669 • CLASS 6
UN 1669 — Pentachloroethane
Placard: Toxic. ERG Guide 151. 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 1669 Quick Details
UN 1669
Product name: Pentachloroethane
DOT Class: 6
Placard type: Toxic
ERG Guide: 151 (check current ERG)
Initial isolation: ERG 151: isolate spill/leak area immediately for at least 50m in all directions; evacuate 300m downwind for large spills
Common Hazards of UN 1669
- Highly toxic, may be fatal if inhaled, ingested or absorbed through skin.
- 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
- Containers may explode when heated.
- Runoff may pollute waterways.
Chemical Identity & Physical Properties
| Also known as | PentalinEthane pentachloridePCE1,1,1,2,2-Pentachloroethane |
| CAS Number | 76-01-7 |
| Appearance | Colorless to yellowish liquid with a sweet, chloroform-like odor. Denser than water and relatively volatile at room temperature. |
| Flash Point | Not applicable (non-flammable liquid) |
| Boiling Point | 162°C (324°F) |
| Vapor Density | 6.9 (much heavier than air) |
| Water Reactivity | No significant reaction with water; insoluble and will sink |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 1669
Extinguishing Media
Dry chemical, CO2, or water spray for cooling; foam may be used to suppress vapors
PPE Requirements
⚠️ Level A or B with SCBA required; full chemical-resistant suit; avoid all skin contact due to high dermal toxicity
Isolation & Evacuation
ERG 151: isolate spill/leak area immediately for at least 50m in all directions; evacuate 300m downwind for large spills
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 151).
First Actions for a UN 1669 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 1669 — PentachloroethaneHAZMAT RADIO NOTE — UN 1669
Product: Pentachloroethane
Class 6 / Toxic / ERG 151
PPE: Level A or B with SCBA required; full chemical-resistant suit; avoid all skin contact due to high dermal toxicity
ISOLATION: ERG 151: isolate spill/leak area immediately for at least 50m in all directions; evacuate 300m downwind for large spills
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 1669 — Pentachloroethane
Class: 6 | Placard: Toxic | ERG Guide: 151
Appearance: Colorless to yellowish liquid with a sweet, chloroform-like odor. Denser than water and relatively volatile at room temperature.
Water Reactivity: No significant reaction with water; insoluble and will sink
Extinguishing: Dry chemical, CO2, or water spray for cooling; foam may be used to suppress vapors
PPE: Level A or B with SCBA required; full chemical-resistant suit; avoid all skin contact due to high dermal toxicity
Isolation: ERG 151: isolate spill/leak area immediately for at least 50m in all directions; evacuate 300m downwind for large spills
— Key Hazards —
• Highly toxic, may be fatal if inhaled, ingested or absorbed through skin.
• Avoid any skin contact.
• Fire may produce irritating, corrosive and/or toxic gases.
— 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/1669 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1669 Pentachloroethane Cls6 ERG151 | ERG 151: isolate spill/leak area immediately for at least 50m in all directions; | allfirefighter.com/hazmat/un/1669SMS / 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/1669
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Frequently Asked Questions about UN 1669
Highly toxic, may be fatal if inhaled, ingested or absorbed through skin. 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 Containers may explode when heated. Runoff may pollute waterways.
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 or B with SCBA required; full chemical-resistant suit; avoid all skin contact due to high dermal toxicity
Water reactivity: No significant reaction with water; insoluble and will sink. Recommended extinguishing: Dry chemical, CO2, or water spray for cooling; foam may be used to suppress vapors.
ERG Guide 151 recommendation: ERG 151: isolate spill/leak area immediately for at least 50m in all directions; evacuate 300m downwind for large spills
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 151 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.