☣️ UN 0027 • CLASS 1
UN 0027 — Black powder (gunpowder), granular or as a meal
Placard: Explosive 1.1D. ERG Guide 112. 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 0027 Quick Details
UN 0027
Product name: Black powder (gunpowder), granular or as a meal
DOT Class: 1
Placard type: Explosive 1.1D
ERG Guide: 112 (check current ERG)
Initial isolation: ERG 112: Initially isolate 500m in all directions. If tank/rail car involved in fire, isolate 1600m in all directions and consider evacuation
Common Hazards of UN 0027
- Deflagration/explosion hazard
- Extremely sensitive to ignition sources
- Rapid fire spread from spilled material
Chemical Identity & Physical Properties
| Also known as | GunpowderBlack powderPowder, sportingFFFFg powderCannon powderBlasting powder |
| CAS Number | 1336-07-6 |
| Appearance | Black to dark gray granular powder or fine meal with a characteristic sulfurous odor. Solid at room temperature. |
| Flash Point | Not applicable (explosive solid) |
| Boiling Point | Not applicable (decomposes/deflagrates) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | No significant reaction with water, but moisture can affect sensitivity and performance |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 0027
Extinguishing Media
Water spray from distance, dry chemical, sand, CO2. Avoid direct water streams on bulk quantities
PPE Requirements
⚠️ Level B minimum for non-fire incidents; Full structural firefighting PPE with SCBA for fire operations; Avoid static-generating clothing
Isolation & Evacuation
ERG 112: Initially isolate 500m in all directions. If tank/rail car involved in fire, isolate 1600m in all directions and consider evacuation
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 112).
First Actions for a UN 0027 Incident
- CALL 911. Then call emergency response number on shipping paper.
- Isolate minimum 500 meters; deny entry
- Stage upwind; eliminate ALL ignition sources
- Request Hazmat + law enforcement
- Do not use water streams — use flooding quantities if directed
- Consult current ERG Guide 112 and SOP/SOG
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📋 Copy & Share Field Card
UN 0027 — Black powder (gunpowder), granular or asHAZMAT RADIO NOTE — UN 0027
Product: Black powder (gunpowder), granular or as a meal
Class 1 / Explosive 1.1D / ERG 112
PPE: Level B minimum for non-fire incidents; Full structural firefighting PPE with SCBA for fire operations; Avoid static-generating clothing
ISOLATION: ERG 112: Initially isolate 500m in all directions. If tank/rail car involved in fire, isolate 1600m in all directions and consider evacuation
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 0027 — Black powder (gunpowder), granular or as a meal
Class: 1 | Placard: Explosive 1.1D | ERG Guide: 112
Appearance: Black to dark gray granular powder or fine meal with a characteristic sulfurous odor. Solid at room temperature.
Water Reactivity: No significant reaction with water, but moisture can affect sensitivity and performance
Extinguishing: Water spray from distance, dry chemical, sand, CO2. Avoid direct water streams on bulk quantities
PPE: Level B minimum for non-fire incidents; Full structural firefighting PPE with SCBA for fire operations; Avoid static-generating clothing
Isolation: ERG 112: Initially isolate 500m in all directions. If tank/rail car involved in fire, isolate 1600m in all directions and consider evacuation
— Key Hazards —
• Deflagration/explosion hazard
• Extremely sensitive to ignition sources
• Rapid fire spread from spilled material
— First Actions —
• CALL 911. Then call emergency response number on shipping paper.
• Isolate minimum 500 meters; deny entry
• Stage upwind; eliminate ALL ignition sources
• Request Hazmat + law enforcement
SOURCE: allfirefighter.com/hazmat/un/0027 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN0027 Black powder (gunpowder), granular or as a meal Cls1 ERG112 | allfirefighter.com/hazmat/un/0027SMS / 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/0027
Related UN Numbers in Class 1
Discovery block for training / quick reference. Always consult the current ERG + your SOP/SOG for operations.
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Frequently Asked Questions about UN 0027
Deflagration/explosion hazard Extremely sensitive to ignition sources Rapid fire spread from spilled material
CALL 911. Then call emergency response number on shipping paper. Isolate minimum 500 meters; deny entry Stage upwind; eliminate ALL ignition sources
Level B minimum for non-fire incidents; Full structural firefighting PPE with SCBA for fire operations; Avoid static-generating clothing
Water reactivity: No significant reaction with water, but moisture can affect sensitivity and performance. Recommended extinguishing: Water spray from distance, dry chemical, sand, CO2. Avoid direct water streams on bulk quantities.
ERG Guide 112 recommendation: ERG 112: Initially isolate 500m in all directions. If tank/rail car involved in fire, isolate 1600m in all directions and consider evacuation
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 112 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.