☣️ UN 0027 • CLASS 1
Black powder (gunpowder), granular or as a meal
Placard: Explosive 1.1D. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
🚒☣️
⚠️ 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 0027
Class: 1
Placard type: Explosive 1.1D
ERG: Guide 112 (check current ERG)
Isolation: ERG 112: Initially isolate 500m in all directions. If tank/rail car involved in fire, isolate 1600m in all directions and consider evacuation
Chemical & Response Details
| 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 |
| 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 |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- Deflagration/explosion hazard
- Extremely sensitive to ignition sources
- Rapid fire spread from spilled material
First actions (field-minded)
- 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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UN 0027 — Black powder (gunpowder), granular or as HAZMAT 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 (same class)
Discovery block for training / quick reference. Always consult the current ERG + your SOP/SOG for operations.
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FAQ
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
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.