☣️ UN 1446 • CLASS 5
UN 1446 — Barium nitrate
Placard: Oxidizer. ERG Guide 141. 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 1446 Quick Details
UN 1446
Product name: Barium nitrate
DOT Class: 5
Placard type: Oxidizer
ERG Guide: 141 (check current ERG)
Initial isolation: ERG 141: isolate spill 25-50m; for large spill isolate 100m all directions; evacuate immediate area if fire
Common Hazards of UN 1446
- These substances will accelerate burning when involved in a fire.
- May explode from heat or contamination.
- Some may burn rapidly.
- Some will react explosively with hydrocarbons (fuels).
- May ignite combustibles (wood, paper, oil, clothing, etc.).
- Containers may explode when heated.
- Runoff may create fire or explosion hazard.
- Toxic by ingestion.
Chemical Identity & Physical Properties
| Also known as | Nitric acid, barium saltBarium dinitrateNitrobariteBarium(II) nitrate |
| CAS Number | 10022-31-8 |
| Appearance | White to transparent crystalline solid or powder, odorless. Soluble in water. |
| Flash Point | Not applicable (oxidizer, non-combustible solid) |
| Boiling Point | Decomposes at 592C (1098F) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Dissolves in water, no violent reaction. Solution is toxic. |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 1446
Extinguishing Media
Water spray, dry chemical, CO2. Avoid organic materials that could be oxidized.
PPE Requirements
⚠️ Level B minimum; SCBA and chemical protective clothing; avoid dust inhalation
Isolation & Evacuation
ERG 141: isolate spill 25-50m; for large spill isolate 100m all directions; evacuate immediate area if fire
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 141).
First Actions for a UN 1446 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
- Consider initial downwind evacuation for at least 100 meters (330 feet).
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📋 Copy & Share Field Card
UN 1446 — Barium nitrateHAZMAT RADIO NOTE — UN 1446
Product: Barium nitrate
Class 5 / Oxidizer / ERG 141
PPE: Level B minimum; SCBA and chemical protective clothing; avoid dust inhalation
ISOLATION: ERG 141: isolate spill 25-50m; for large spill isolate 100m all directions; evacuate immediate area if 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 1446 — Barium nitrate
Class: 5 | Placard: Oxidizer | ERG Guide: 141
Appearance: White to transparent crystalline solid or powder, odorless. Soluble in water.
Water Reactivity: Dissolves in water, no violent reaction. Solution is toxic.
Extinguishing: Water spray, dry chemical, CO2. Avoid organic materials that could be oxidized.
PPE: Level B minimum; SCBA and chemical protective clothing; avoid dust inhalation
Isolation: ERG 141: isolate spill 25-50m; for large spill isolate 100m all directions; evacuate immediate area if fire
— Key Hazards —
• These substances will accelerate burning when involved in a fire.
• May explode from heat or contamination.
• Some may burn rapidly.
— 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/1446 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1446 Barium nitrate Cls5 ERG141 | ERG 141: isolate spill 25-50m; for large spill isolate 100m all directions; evac | allfirefighter.com/hazmat/un/1446SMS / 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/1446
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Frequently Asked Questions about UN 1446
These substances will accelerate burning when involved in a fire. May explode from heat or contamination. Some may burn rapidly. Some will react explosively with hydrocarbons (fuels). May ignite combustibles (wood, paper, oil, clothing, etc.). Containers may explode when heated. Runoff may create fire or explosion hazard. Toxic by ingestion.
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 chemical protective clothing; avoid dust inhalation
Water reactivity: Dissolves in water, no violent reaction. Solution is toxic.. Recommended extinguishing: Water spray, dry chemical, CO2. Avoid organic materials that could be oxidized..
ERG Guide 141 recommendation: ERG 141: isolate spill 25-50m; for large spill isolate 100m all directions; evacuate immediate area if fire
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 141 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.