☣️ UN 3140 • CLASS 6
Alkaloid salts, liquid, n.o.s. (poisonous)
Placard: Toxic. 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 3140
Class: 6
Placard type: Toxic
ERG: Guide 151 (check current ERG)
Isolation: ERG 151: isolate spill 25-50m all directions; initial evacuation 100m downwind; if tank/rail car involved in fire, isolate 800m all directions
Chemical & Response Details
| Also known as | Alkaloid salt solutionsLiquid alkaloid compoundsPoisonous alkaloid preparationsN.O.S. alkaloid salts |
| Appearance | Variable appearance depending on specific alkaloid; typically clear to colored liquid solutions. Odor varies by compound but often bitter or characteristic. |
| Flash Point | Variable depending on solvent; typically non-flammable aqueous solutions or combustible if in organic solvents |
| Boiling Point | Variable depending on solvent and specific alkaloid compound |
| Vapor Density | Variable depending on specific formulation; typically heavier than air if vapors present |
| Water Reactivity | Generally soluble or miscible with water depending on formulation; no violent reaction expected |
| Extinguishing | Alcohol-resistant foam, dry chemical, CO2 appropriate for fires involving combustible solvents |
| PPE | ⚠️ Level A required for unknown alkaloids or significant release; Level B minimum with SCBA and chemical-resistant suit; avoid all skin contact due to severe toxicity |
| Isolation | ERG 151: isolate spill 25-50m all directions; initial evacuation 100m downwind; if tank/rail car involved in fire, isolate 800m all directions |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- 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.
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.
- 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 3140 — Alkaloid salts, liquid, n.o.s. (poisonou HAZMAT RADIO NOTE — UN 3140
Product: Alkaloid salts, liquid, n.o.s. (poisonous)
Class 6 / Toxic / ERG 151
PPE: Level A required for unknown alkaloids or significant release; Level B minimum with SCBA and chemical-resistant suit; avoid all skin contact due to severe toxicity
ISOLATION: ERG 151: isolate spill 25-50m all directions; initial evacuation 100m downwind; if tank/rail car involved in fire, isolate 800m 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 3140 — Alkaloid salts, liquid, n.o.s. (poisonous)
Class: 6 | Placard: Toxic | ERG Guide: 151
Appearance: Variable appearance depending on specific alkaloid; typically clear to colored liquid solutions. Odor varies by compound but often bitter or characteristic.
Water Reactivity: Generally soluble or miscible with water depending on formulation; no violent reaction expected
Extinguishing: Alcohol-resistant foam, dry chemical, CO2 appropriate for fires involving combustible solvents
PPE: Level A required for unknown alkaloids or significant release; Level B minimum with SCBA and chemical-resistant suit; avoid all skin contact due to severe toxicity
Isolation: ERG 151: isolate spill 25-50m all directions; initial evacuation 100m downwind; if tank/rail car involved in fire, isolate 800m 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/3140 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN3140 Alkaloid salts, liquid, n.o.s. (poisonous) Cls6 ERG151 | allfirefighter.com/hazmat/un/3140SMS / 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/3140
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FAQ
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 required for unknown alkaloids or significant release; Level B minimum with SCBA and chemical-resistant suit; avoid all skin contact due to severe toxicity
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.