☣️ UN 1544 • CLASS 6
Alkaloid salts, solid, 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 1544
Class: 6
Placard type: Toxic
ERG: Guide 151 (check current ERG)
Isolation: ERG 151: Isolate spill or leak area immediately at least 25-50 meters in all directions; if large spill isolate 100+ meters; evacuate downwind if airborne dust present
Chemical & Response Details
| Also known as | Alkaloid saltsSolid alkaloid derivativesPoisonous alkaloid compoundsN.O.S. alkaloid salts |
| Appearance | Solid material, typically crystalline or powder form. Color and odor vary depending on specific alkaloid compound. Generally stable at room temperature. |
| Flash Point | Not applicable (non-flammable solid, though may decompose in fire) |
| Boiling Point | Not applicable (decomposes before boiling) |
| Vapor Density | Not applicable (solid material) |
| Water Reactivity | Generally no significant reaction with water, though solubility varies by specific alkaloid salt |
| Extinguishing | Dry chemical, CO2, water spray for cooling containers in fire (substance itself is non-flammable) |
| PPE | ⚠️ Level B minimum; full face SCBA required; chemical-resistant suit and gloves mandatory to prevent any skin contact; extreme caution with dust inhalation |
| Isolation | ERG 151: Isolate spill or leak area immediately at least 25-50 meters in all directions; if large spill isolate 100+ meters; evacuate downwind if airborne dust present |
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 1544 — Alkaloid salts, solid, n.o.s. (poisonous HAZMAT RADIO NOTE — UN 1544
Product: Alkaloid salts, solid, n.o.s. (poisonous)
Class 6 / Toxic / ERG 151
PPE: Level B minimum; full face SCBA required; chemical-resistant suit and gloves mandatory to prevent any skin contact; extreme caution with dust inhalation
ISOLATION: ERG 151: Isolate spill or leak area immediately at least 25-50 meters in all directions; if large spill isolate 100+ meters; evacuate downwind if airborne dust present
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 1544 — Alkaloid salts, solid, n.o.s. (poisonous)
Class: 6 | Placard: Toxic | ERG Guide: 151
Appearance: Solid material, typically crystalline or powder form. Color and odor vary depending on specific alkaloid compound. Generally stable at room temperature.
Water Reactivity: Generally no significant reaction with water, though solubility varies by specific alkaloid salt
Extinguishing: Dry chemical, CO2, water spray for cooling containers in fire (substance itself is non-flammable)
PPE: Level B minimum; full face SCBA required; chemical-resistant suit and gloves mandatory to prevent any skin contact; extreme caution with dust inhalation
Isolation: ERG 151: Isolate spill or leak area immediately at least 25-50 meters in all directions; if large spill isolate 100+ meters; evacuate downwind if airborne dust present
— 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/1544 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1544 Alkaloid salts, solid, n.o.s. (poisonous) Cls6 ERG151 | allfirefighter.com/hazmat/un/1544SMS / 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/1544
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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 B minimum; full face SCBA required; chemical-resistant suit and gloves mandatory to prevent any skin contact; extreme caution with dust inhalation
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.