UN 2673 — 2-Amino-4-chlorophenol
Placard: Toxic. ERG Guide 151. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 2673 is 2-Amino-4-chlorophenol, a toxic chlorinated aminophenol solid assigned to ERG Guide 151. Dust, skin absorption and toxic fire products require control.
Hazard overview: TOXIC chlorinated aminophenol solid; inhalation, ingestion or skin absorption may cause severe injury. Skin contact and contaminated clothing can extend exposure. Combustible solid: may burn but does not ignite readily.
Response guidance: For UN 2673, isolate the area, avoid skin contact and use SCBA where dust, vapor, mist or fire is present. Control ignition or moisture hazards as applicable and contain toxic/corrosive runoff.
Firefighter training notes: Training for UN 2673 should emphasize toxic exposure routes, SCBA use, dust/vapor monitoring, fire behavior, decontamination, runoff containment and SDS verification. Use ERG 151, SDS and local SOP.
Regulatory context: 2-Amino-4-chlorophenol is regulated as a hazardous material for transport and emergency response. Storage, exposure, spill reporting, waste and fire-code duties depend on quantity, concentration and jurisdiction; verify shipping papers, SDS and local authority requirements.
Storage & handling: 2-Amino-4-chlorophenol should be stored in tightly closed compatible containers with ventilation, secondary containment, restricted access and SDS-based segregation from incompatible materials.
UN 2673 Quick Details
Common Hazards of UN 2673
- TOXIC chlorinated aminophenol solid; inhalation, ingestion or skin absorption may cause severe injury.
- Skin contact and contaminated clothing can extend exposure.
- Combustible solid: may burn but does not ignite readily.
- Dust can irritate eyes, skin and respiratory tract.
- Fire may produce hydrogen chloride, nitrogen oxides, phenolic smoke and other toxic gases.
- Runoff may carry toxic phenolic/chlorinated contamination.
- Avoid dust generation and all unprotected contact.
Chemical Identity & Physical Properties
Light brown to tan crystalline solid or powder at room temperature. Slight phenolic odor. May darken on exposure to air and light.
| 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 |
Fireground Response Guidance — UN 2673
Extinguishing Media
PPE Requirements
Use positive-pressure SCBA for dust, vapor, mist, fire or confined-space exposure. Wear chemical-resistant gloves, boots, eye/face protection and protective clothing.
Isolation & Evacuation
First Actions for a UN 2673 Incident
- Call 911 and the emergency response number on the shipping paper, if available.
- Keep unauthorized personnel away and establish incident command.
- Stay upwind, uphill and upstream.
- Avoid breathing vapor, dust, mist, smoke or fumes and avoid skin or eye contact.
- Do not touch damaged containers or spilled material without proper training and PPE.
- Prevent contaminated liquid, dust, runoff and decontamination waste from spreading.
- Ventilate confined spaces only after monitoring and only if properly trained and equipped.
- Use ERG Guide 151, SDS, shipping papers and monitoring to set isolation, evacuation and entry decisions.
📋 Copy & Share Field Card
UN 2673 — 2-Amino-4-chlorophenolUse for: Quick radio or face-to-face size-up. Short, structured, field-ready.
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
Use for: Quick text to command or incoming units. Fits in a single SMS.