☣️ UN 2947 • CLASS 3
UN 2947 — Isopropyl chloroacetate
Placard: Flammable. ERG Guide 127. 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 2947 Quick Details
UN 2947
Product name: Isopropyl chloroacetate
DOT Class: 3
Placard type: Flammable
ERG Guide: 127 (check current ERG)
Initial isolation: ERG 127: Isolate spill 50m all directions; initial evacuation 150m in all directions for large spills; 300m downwind if tank/railcar involved in fire
Common Hazards of UN 2947
- HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.
- Vapors may form explosive mixtures with air.
- Vapors may travel to source of ignition and flash back.
- Most vapors are heavier than air. They will spread along the ground and collect in low or confined areas
- Vapor explosion hazard indoors, outdoors or in sewers.
- Those substances designated with a (P) may polymerize explosively when heated or involved in a fire.
- Runoff to sewer may create fire or explosion hazard.
- Containers may explode when heated.
Chemical Identity & Physical Properties
| Also known as | Chloroacetic acid isopropyl esterIsopropyl monochloroacetate2-Propyl chloroacetateIsopropyl α-chloroacetate |
| CAS Number | 105-48-6 |
| Appearance | Colorless to pale yellow liquid with a pungent, ester-like odor. Liquid at room temperature with moderate viscosity. |
| Flash Point | 42°C (108°F) |
| Boiling Point | 148-150°C (298-302°F) |
| Vapor Density | 4.7 (heavier than air) |
| Water Reactivity | Hydrolyzes slowly in water to form chloroacetic acid and isopropanol; no violent reaction but avoid prolonged contact |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 2947
Extinguishing Media
Alcohol-resistant foam, CO2, dry chemical, water spray for cooling containers
PPE Requirements
⚠️ Level B minimum with splash-resistant chemical suit; SCBA required in confined spaces or heavy vapor areas; rubber or neoprene gloves
Isolation & Evacuation
ERG 127: Isolate spill 50m all directions; initial evacuation 150m in all directions for large spills; 300m downwind if tank/railcar involved in fire
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 127).
First Actions for a UN 2947 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 for at least 50 meters (150 feet) in all directions.
- Consider initial downwind evacuation for at least 300 meters (1000 feet).
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📋 Copy & Share Field Card
UN 2947 — Isopropyl chloroacetateHAZMAT RADIO NOTE — UN 2947
Product: Isopropyl chloroacetate
Class 3 / Flammable / ERG 127
PPE: Level B minimum with splash-resistant chemical suit; SCBA required in confined spaces or heavy vapor areas; rubber or neoprene gloves
ISOLATION: ERG 127: Isolate spill 50m all directions; initial evacuation 150m in all directions for large spills; 300m downwind if tank/railcar involved in fire
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 2947 — Isopropyl chloroacetate
Class: 3 | Placard: Flammable | ERG Guide: 127
Appearance: Colorless to pale yellow liquid with a pungent, ester-like odor. Liquid at room temperature with moderate viscosity.
Water Reactivity: Hydrolyzes slowly in water to form chloroacetic acid and isopropanol; no violent reaction but avoid prolonged contact
Extinguishing: Alcohol-resistant foam, CO2, dry chemical, water spray for cooling containers
PPE: Level B minimum with splash-resistant chemical suit; SCBA required in confined spaces or heavy vapor areas; rubber or neoprene gloves
Isolation: ERG 127: Isolate spill 50m all directions; initial evacuation 150m in all directions for large spills; 300m downwind if tank/railcar involved in fire
— Key Hazards —
• HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.
• Vapors may form explosive mixtures with air.
• Vapors may travel to source of ignition and flash back.
— 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/2947 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN2947 Isopropyl chloroacetate Cls3 ERG127 | allfirefighter.com/hazmat/un/2947SMS / 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/2947
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Frequently Asked Questions about UN 2947
HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along the ground and collect in low or confined areas Vapor explosion hazard indoors, outdoors or in sewers. Those substances designated with a (P) may polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated.
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 with splash-resistant chemical suit; SCBA required in confined spaces or heavy vapor areas; rubber or neoprene gloves
Water reactivity: Hydrolyzes slowly in water to form chloroacetic acid and isopropanol; no violent reaction but avoid prolonged contact. Recommended extinguishing: Alcohol-resistant foam, CO2, dry chemical, water spray for cooling containers.
ERG Guide 127 recommendation: ERG 127: Isolate spill 50m all directions; initial evacuation 150m in all directions for large spills; 300m downwind if tank/railcar involved in fire
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 127 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.