☣️ UN 1654 • CLASS 6
UN 1654 — Nicotine
Placard: Toxic. ERG Guide 151. 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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UN 1654 Quick Details
UN 1654
Product name: Nicotine
DOT Class: 6
Placard type: Toxic
ERG Guide: 151 (check current ERG)
Initial isolation: ERG 151: Isolate spill 25m all directions initially; if tank/railcar involved in fire, isolate 800m and evacuate 1600m downwind
Common Hazards of UN 1654
- 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 | 3-(1-Methylpyrrolidin-2-yl)pyridineBlack LeafNicotine alkaloidL-NicotineTobacco extract |
| CAS Number | 54-11-5 |
| Appearance | Colorless to pale yellow oily liquid with a pungent, acrid odor resembling tobacco. Darkens upon exposure to air or light. |
| Flash Point | 95°C (203°F) |
| Boiling Point | 247°C (477°F) |
| Vapor Density | 5.6 (heavier than air) |
| Water Reactivity | Soluble in water; no significant reaction |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 1654
Extinguishing Media
Dry chemical, CO2, alcohol-resistant foam, water spray
PPE Requirements
⚠️ Level A or B required; full encapsulating suit for spills; SCBA mandatory; prevent any skin contact; neoprene or nitrile gloves
Isolation & Evacuation
ERG 151: Isolate spill 25m all directions initially; if tank/railcar involved in fire, isolate 800m and evacuate 1600m downwind
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 151).
First Actions for a UN 1654 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 1654 — NicotineHAZMAT RADIO NOTE — UN 1654
Product: Nicotine
Class 6 / Toxic / ERG 151
PPE: Level A or B required; full encapsulating suit for spills; SCBA mandatory; prevent any skin contact; neoprene or nitrile gloves
ISOLATION: ERG 151: Isolate spill 25m all directions initially; if tank/railcar involved in fire, isolate 800m and evacuate 1600m downwind
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 1654 — Nicotine
Class: 6 | Placard: Toxic | ERG Guide: 151
Appearance: Colorless to pale yellow oily liquid with a pungent, acrid odor resembling tobacco. Darkens upon exposure to air or light.
Water Reactivity: Soluble in water; no significant reaction
Extinguishing: Dry chemical, CO2, alcohol-resistant foam, water spray
PPE: Level A or B required; full encapsulating suit for spills; SCBA mandatory; prevent any skin contact; neoprene or nitrile gloves
Isolation: ERG 151: Isolate spill 25m all directions initially; if tank/railcar involved in fire, isolate 800m and evacuate 1600m downwind
— 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/1654 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1654 Nicotine Cls6 ERG151 | ERG 151: Isolate spill 25m all directions initially; if tank/railcar involved in | allfirefighter.com/hazmat/un/1654SMS / 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/1654
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Frequently Asked Questions about UN 1654
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 A or B required; full encapsulating suit for spills; SCBA mandatory; prevent any skin contact; neoprene or nitrile gloves
Water reactivity: Soluble in water; no significant reaction. Recommended extinguishing: Dry chemical, CO2, alcohol-resistant foam, water spray.
ERG Guide 151 recommendation: ERG 151: Isolate spill 25m all directions initially; if tank/railcar involved in fire, isolate 800m and evacuate 1600m downwind
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.