UN 2875 — Hexachlorophene
Placard: Toxic. ERG Guide 151. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 2875 is Hexachlorophene, a highly toxic chlorinated phenolic solid assigned to ERG Guide 151. Skin absorption, dust and persistent runoff require control.
Hazard overview: HIGHLY TOXIC chlorinated phenolic solid; inhalation, ingestion or skin absorption may cause severe injury. Skin absorption and contaminated clothing are major exposure concerns. Dust can contaminate clothing, tools, soil and runoff.
Response guidance: For UN 2875, isolate the area, avoid skin contact and use SCBA where dust, vapor, aerosol or fire is present. Contain toxic runoff and verify controls with SDS and ERG 151.
Firefighter training notes: Training for UN 2875 should emphasize exposure routes, SCBA use, vapor/dust monitoring, decontamination, runoff containment and SDS/package verification. Use ERG 151, SDS and local SOP.
Regulatory context: Hexachlorophene is regulated as a hazardous material for transport and emergency response. Storage, reporting, exposure, waste and incident-notification duties depend on package type, quantity, formulation and jurisdiction; verify shipping papers, SDS or authority guidance.
Storage & handling: Hexachlorophene should be stored in tightly closed compatible containers with ventilation, secondary containment, restricted access and SDS-based segregation from incompatible materials.
UN 2875 Quick Details
Common Hazards of UN 2875
- HIGHLY TOXIC chlorinated phenolic solid; inhalation, ingestion or skin absorption may cause severe injury.
- Skin absorption and contaminated clothing are major exposure concerns.
- Dust can contaminate clothing, tools, soil and runoff.
- Non-flammable or low-combustibility solid, but heating can produce toxic chlorinated fumes.
- Fire may produce hydrogen chloride, phenolic smoke and other toxic gases.
- Runoff may be toxic, persistent and harmful to waterways.
- Avoid dust generation and all unprotected contact.
Chemical Identity & Physical Properties
White or light tan crystalline powder or solid with a slight phenolic odor. Insoluble in water.
| Also known as | HCP2,2'-Methylenebis(3,4,6-trichlorophenol)Bis(2-hydroxy-3,5,6-trichlorophenyl)methaneHexachlorophaneG-11 |
| CAS Number | 70-30-4 |
| Appearance | White or light tan crystalline powder or solid with a slight phenolic odor. Insoluble in water. |
| Flash Point | Not applicable (solid, low flammability) |
| Boiling Point | Decomposes before boiling at approximately 165-166C (329-331F) |
| Vapor Density | Not applicable (solid with negligible vapor pressure) |
| Water Reactivity | No significant reaction with water; insoluble |
Fireground Response Guidance — UN 2875
Extinguishing Media
PPE Requirements
Use positive-pressure SCBA for vapor, dust, mist, fire or confined-space exposure. Wear chemical-resistant gloves, boots, eye/face protection and protective clothing.
Isolation & Evacuation
First Actions for a UN 2875 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, gas, mist, smoke or aerosols 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 2875 — HexachloropheneUse 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.