☣️ UN 1564 • CLASS 6
UN 1564 — Barium compound, n.o.s.
Placard: Toxic. ERG Guide 154. 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 1564 Quick Details
UN 1564
Product name: Barium compound, n.o.s.
DOT Class: 6
Placard type: Toxic
ERG Guide: 154 (check current ERG)
Initial isolation: ERG 154: Initially isolate spill or leak area at least 25 meters in all directions; for large spills isolate 100+ meters; evacuate immediate area if material is on fire or involved in fire
Common Hazards of UN 1564
- 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.
Chemical Identity & Physical Properties
| Also known as | Barium salts n.o.s.Barium compounds (unspecified)Barium chemicals |
| Appearance | Physical appearance varies by compound - typically white to gray crystalline solids or powders, some may be colorless crystals. Generally odorless. Physical state at room temperature is solid for most barium compounds. |
| Flash Point | Not applicable (inorganic solids) |
| Boiling Point | Varies by compound - typically high decomposition temperatures above 800C (1472F) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Varies by compound - some barium compounds dissolve in water forming toxic solutions; barium metal reacts violently with water releasing hydrogen gas |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 1564
Extinguishing Media
Water spray for dust suppression; dry chemical or CO2 for small fires; avoid high-pressure water that disperses material
PPE Requirements
⚠️ Level B minimum recommended; full-face respirator with HEPA filters or SCBA; chemical-resistant suit, gloves, and boots; avoid skin contact and inhalation of dusts or fumes
Isolation & Evacuation
ERG 154: Initially isolate spill or leak area at least 25 meters in all directions; for large spills isolate 100+ meters; evacuate immediate area if material is on fire or involved in fire
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 154).
First Actions for a UN 1564 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.
- 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 1564 — Barium compound, n.o.s.HAZMAT RADIO NOTE — UN 1564
Product: Barium compound, n.o.s.
Class 6 / Toxic / ERG 154
PPE: Level B minimum recommended; full-face respirator with HEPA filters or SCBA; chemical-resistant suit, gloves, and boots; avoid skin contact and inhalation of dusts or fumes
ISOLATION: ERG 154: Initially isolate spill or leak area at least 25 meters in all directions; for large spills isolate 100+ meters; evacuate immediate area if material is on fire or involved in fire
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 1564 — Barium compound, n.o.s.
Class: 6 | Placard: Toxic | ERG Guide: 154
Appearance: Physical appearance varies by compound - typically white to gray crystalline solids or powders, some may be colorless crystals. Generally odorless. Physical state at room temperature is solid for most barium compounds.
Water Reactivity: Varies by compound - some barium compounds dissolve in water forming toxic solutions; barium metal reacts violently with water releasing hydrogen gas
Extinguishing: Water spray for dust suppression; dry chemical or CO2 for small fires; avoid high-pressure water that disperses material
PPE: Level B minimum recommended; full-face respirator with HEPA filters or SCBA; chemical-resistant suit, gloves, and boots; avoid skin contact and inhalation of dusts or fumes
Isolation: ERG 154: Initially isolate spill or leak area at least 25 meters in all directions; for large spills isolate 100+ meters; evacuate immediate area if material is on fire or involved in fire
— 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/1564 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1564 Barium compound, n.o.s. Cls6 ERG154 | allfirefighter.com/hazmat/un/1564SMS / 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/1564
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Frequently Asked Questions about UN 1564
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 recommended; full-face respirator with HEPA filters or SCBA; chemical-resistant suit, gloves, and boots; avoid skin contact and inhalation of dusts or fumes
Water reactivity: Varies by compound - some barium compounds dissolve in water forming toxic solutions; barium metal reacts violently with water releasing hydrogen gas. Recommended extinguishing: Water spray for dust suppression; dry chemical or CO2 for small fires; avoid high-pressure water that disperses material.
ERG Guide 154 recommendation: ERG 154: Initially isolate spill or leak area at least 25 meters in all directions; for large spills isolate 100+ meters; evacuate immediate area if material is on fire or involved in fire
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.