☣️ UN 2673 • CLASS 6
UN 2673 — 2-Amino-4-chlorophenol
Placard: Toxic. ERG Guide 151. 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 2673 Quick Details
UN 2673
Product name: 2-Amino-4-chlorophenol
DOT Class: 6
Placard type: Toxic
ERG Guide: 151 (check current ERG)
Initial isolation: ERG 151: Isolate spill or leak area immediately for at least 50 meters (150 feet) in all directions. For large spills, isolate 100m (330 feet) and consider evacuation of downwind areas.
Common Hazards of UN 2673
- 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 | 4-Chloro-2-aminophenol2-Amino-p-chlorophenol4-Chloro-o-aminophenolp-Chloro-o-aminophenol |
| CAS Number | 95-85-2 |
| Appearance | Light brown to tan crystalline solid or powder at room temperature. Slight phenolic odor. May darken on exposure to air and light. |
| Flash Point | Not applicable (solid) |
| Boiling Point | Decomposes before boiling |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | No significant reaction with water; slightly soluble in cold water, more soluble in hot water |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 2673
Extinguishing Media
Water spray, dry chemical, CO2, or foam may be used for fires involving this material
PPE Requirements
⚠️ Level B minimum for spill response; SCBA and full chemical-resistant suit required for any potential exposure. Avoid all skin contact - highly toxic by absorption.
Isolation & Evacuation
ERG 151: Isolate spill or leak area immediately for at least 50 meters (150 feet) in all directions. For large spills, isolate 100m (330 feet) and consider evacuation of downwind areas.
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 151).
First Actions for a UN 2673 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 2673 — 2-Amino-4-chlorophenolHAZMAT RADIO NOTE — UN 2673
Product: 2-Amino-4-chlorophenol
Class 6 / Toxic / ERG 151
PPE: Level B minimum for spill response; SCBA and full chemical-resistant suit required for any potential exposure. Avoid all skin contact - highly toxic by absorption.
ISOLATION: ERG 151: Isolate spill or leak area immediately for at least 50 meters (150 feet) in all directions. For large spills, isolate 100m (330 feet) and consider evacuation of downwind areas.
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 2673 — 2-Amino-4-chlorophenol
Class: 6 | Placard: Toxic | ERG Guide: 151
Appearance: Light brown to tan crystalline solid or powder at room temperature. Slight phenolic odor. May darken on exposure to air and light.
Water Reactivity: No significant reaction with water; slightly soluble in cold water, more soluble in hot water
Extinguishing: Water spray, dry chemical, CO2, or foam may be used for fires involving this material
PPE: Level B minimum for spill response; SCBA and full chemical-resistant suit required for any potential exposure. Avoid all skin contact - highly toxic by absorption.
Isolation: ERG 151: Isolate spill or leak area immediately for at least 50 meters (150 feet) in all directions. For large spills, isolate 100m (330 feet) and consider evacuation of downwind areas.
— 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/2673 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN2673 2-Amino-4-chlorophenol Cls6 ERG151 | ERG 151: Isolate spill or leak area immediately for at least 50 meters (150 feet | allfirefighter.com/hazmat/un/2673SMS / 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/2673
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Frequently Asked Questions about UN 2673
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 B minimum for spill response; SCBA and full chemical-resistant suit required for any potential exposure. Avoid all skin contact - highly toxic by absorption.
Water reactivity: No significant reaction with water; slightly soluble in cold water, more soluble in hot water. Recommended extinguishing: Water spray, dry chemical, CO2, or foam may be used for fires involving this material.
ERG Guide 151 recommendation: ERG 151: Isolate spill or leak area immediately for at least 50 meters (150 feet) in all directions. For large spills, isolate 100m (330 feet) and consider evacuation of downwind areas.
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.