☣️ UN 2026 • CLASS 6
UN 2026 — Phenylmercuric compound, n.o.s.
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.
Advertisement
UN 2026 Quick Details
UN 2026
Product name: Phenylmercuric compound, n.o.s.
DOT Class: 6
Placard type: Toxic
ERG Guide: 151 (check current ERG)
Initial isolation: ERG 151: isolate spill/leak 25m all directions; if tank/rail car involved in fire isolate 800m all directions and consider evacuation for 800m in all directions
Common Hazards of UN 2026
- 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 | Phenylmercury compoundsOrganomercury compoundsPhenylmercuric saltsMercury phenyl derivatives |
| Appearance | Varies by specific compound; typically white to off-white crystalline powder or solid. May be odorless or have slight characteristic odor. Solid at room temperature. |
| Flash Point | Not applicable (solid, non-flammable) |
| Boiling Point | Varies by compound; typically decomposes before boiling at elevated temperatures |
| Vapor Density | Not applicable (solid with negligible vapor pressure at room temperature) |
| Water Reactivity | No significant reaction with water; slightly soluble to insoluble depending on compound |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 2026
Extinguishing Media
Dry chemical, CO2, water spray for cooling; foam generally acceptable for fire control
PPE Requirements
⚠️ Level B minimum; SCBA and full chemical-resistant suit required; avoid all skin contact due to severe dermal absorption hazard
Isolation & Evacuation
ERG 151: isolate spill/leak 25m all directions; if tank/rail car involved in fire isolate 800m all directions and consider evacuation for 800m in all directions
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 151).
First Actions for a UN 2026 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
Advertisement
📋 Copy & Share Field Card
UN 2026 — Phenylmercuric compound, n.o.s.HAZMAT RADIO NOTE — UN 2026
Product: Phenylmercuric compound, n.o.s.
Class 6 / Toxic / ERG 151
PPE: Level B minimum; SCBA and full chemical-resistant suit required; avoid all skin contact due to severe dermal absorption hazard
ISOLATION: ERG 151: isolate spill/leak 25m all directions; if tank/rail car involved in fire isolate 800m all directions and consider evacuation for 800m in all directions
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 2026 — Phenylmercuric compound, n.o.s.
Class: 6 | Placard: Toxic | ERG Guide: 151
Appearance: Varies by specific compound; typically white to off-white crystalline powder or solid. May be odorless or have slight characteristic odor. Solid at room temperature.
Water Reactivity: No significant reaction with water; slightly soluble to insoluble depending on compound
Extinguishing: Dry chemical, CO2, water spray for cooling; foam generally acceptable for fire control
PPE: Level B minimum; SCBA and full chemical-resistant suit required; avoid all skin contact due to severe dermal absorption hazard
Isolation: ERG 151: isolate spill/leak 25m all directions; if tank/rail car involved in fire isolate 800m all directions and consider evacuation for 800m in all directions
— 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/2026 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN2026 Phenylmercuric compound, n.o.s. Cls6 ERG151 | allfirefighter.com/hazmat/un/2026SMS / 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/2026
Advertisement
Frequently Asked Questions about UN 2026
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; SCBA and full chemical-resistant suit required; avoid all skin contact due to severe dermal absorption hazard
Water reactivity: No significant reaction with water; slightly soluble to insoluble depending on compound. Recommended extinguishing: Dry chemical, CO2, water spray for cooling; foam generally acceptable for fire control.
ERG Guide 151 recommendation: ERG 151: isolate spill/leak 25m all directions; if tank/rail car involved in fire isolate 800m all directions and consider evacuation for 800m in all directions
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.