☣️ UN 2905 • CLASS 8
Chlorophenolates, solid
Placard: Corrosive. 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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Quick details
UN 2905
Class: 8
Placard type: Corrosive
ERG: Guide 154 (check current ERG)
Isolation: ERG 154: Isolate spill area immediate 25m in all directions; if tank/rail car involved in fire isolate 800m all directions and consider initial evacuation 800m
Chemical & Response Details
| Also known as | ChlorophenolatesChlorinated phenolatesChlorophenol saltsSodium chlorophenolatePotassium chlorophenolate |
| Appearance | Solid material, typically white to tan or brown crystalline powder or granules. May have a phenolic or chemical odor. Highly corrosive and toxic. |
| Flash Point | Not applicable (non-flammable corrosive solid) |
| Boiling Point | Not applicable (decomposes upon heating) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Dissolves in water forming alkaline, corrosive solutions; no violent reaction but creates hazardous pH |
| Extinguishing | Water spray to reduce vapors, do not use direct water stream on bulk material; dry chemical or CO2 for small fires |
| PPE | ⚠️ Level B minimum; full face respirator with appropriate cartridges or SCBA; chemical-resistant suit, gloves, and boots required; avoid all skin contact |
| Isolation | ERG 154: Isolate spill area immediate 25m in all directions; if tank/rail car involved in fire isolate 800m all directions and consider initial evacuation 800m |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- TOXIC and/or CORROSIVE; inhalation, ingestion or skin contact with material may cause severe injury
- Contact with molten substance may cause severe burns to skin and eyes.
- 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
- Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.).
- Corrosives in contact with metals may evolve flammable hydrogen gas.
First actions (field-minded)
- 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 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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UN 2905 — Chlorophenolates, solid HAZMAT RADIO NOTE — UN 2905
Product: Chlorophenolates, solid
Class 8 / Corrosive / ERG 154
PPE: Level B minimum; full face respirator with appropriate cartridges or SCBA; chemical-resistant suit, gloves, and boots required; avoid all skin contact
ISOLATION: ERG 154: Isolate spill area immediate 25m in all directions; if tank/rail car involved in fire isolate 800m all directions and consider initial evacuation 800m
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 2905 — Chlorophenolates, solid
Class: 8 | Placard: Corrosive | ERG Guide: 154
Appearance: Solid material, typically white to tan or brown crystalline powder or granules. May have a phenolic or chemical odor. Highly corrosive and toxic.
Water Reactivity: Dissolves in water forming alkaline, corrosive solutions; no violent reaction but creates hazardous pH
Extinguishing: Water spray to reduce vapors, do not use direct water stream on bulk material; dry chemical or CO2 for small fires
PPE: Level B minimum; full face respirator with appropriate cartridges or SCBA; chemical-resistant suit, gloves, and boots required; avoid all skin contact
Isolation: ERG 154: Isolate spill area immediate 25m in all directions; if tank/rail car involved in fire isolate 800m all directions and consider initial evacuation 800m
— Key Hazards —
• TOXIC and/or CORROSIVE; inhalation, ingestion or skin contact with material may cause severe injury
• Contact with molten substance may cause severe burns to skin and eyes.
• Avoid any skin contact.
— 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/2905 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN2905 Chlorophenolates, solid Cls8 ERG154 | allfirefighter.com/hazmat/un/2905SMS / 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/2905
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FAQ
TOXIC and/or CORROSIVE; inhalation, ingestion or skin contact with material may cause severe injury Contact with molten substance may cause severe burns to skin and eyes. 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 Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Corrosives in contact with metals may evolve flammable hydrogen gas.
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; full face respirator with appropriate cartridges or SCBA; chemical-resistant suit, gloves, and boots required; avoid all skin contact
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 154 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.