☣️ UN 0428 • CLASS 1
Articles, pyrotechnic for technical purposes
Placard: Explosive 1.1G. 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 0428
Class: 1
Placard type: Explosive 1.1G
ERG: Guide 112 (check current ERG)
Isolation: ERG 112: Initial isolation 500m in all directions; if fire or explosion occurs, evacuate 1600m in all directions; mass explosion hazard requires large safety perimeter
Chemical & Response Details
| Also known as | Pyrotechnic articlesPyrotechnic devicesTechnical pyrotechnic articlesFirework assemblies for technical use |
| Appearance | Manufactured articles containing pyrotechnic compositions designed for technical applications. Typically solid devices in various colors and configurations, containing metal powders, oxidizers, and binders that produce light, heat, smoke, or sound effects. |
| Flash Point | Not applicable (pyrotechnic composition) |
| Boiling Point | Not applicable (solid articles, decomposes/burns) |
| Vapor Density | Not applicable (solid articles) |
| Water Reactivity | May contain water-reactive metal powders; water generally not effective for extinguishment |
| Extinguishing | Dry chemical, sand, earth; flood with large quantities of water from distance if feasible; do not use CO2 or Halon |
| PPE | ⚠️ Level A or B with full structural firefighting gear; SCBA mandatory; blast-resistant barriers; maintain maximum distance |
| Isolation | ERG 112: Initial isolation 500m in all directions; if fire or explosion occurs, evacuate 1600m in all directions; mass explosion hazard requires large safety perimeter |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- Mass explosion hazard — entire load may detonate simultaneously.
- Severe blast overpressure and fragmentation.
- Sensitive to heat, shock, and friction.
- Secondary fire and debris hazard.
First actions (field-minded)
- CALL 911. Then call emergency response telephone number on shipping paper.
- Establish large isolation zone — minimum 500 meters in all directions.
- Stage upwind, uphill; limit personnel to essential responders only.
- Request Hazmat + law enforcement + additional resources immediately.
- Do not fight fire — evacuate and isolate; let burn if no life safety risk.
- Protect exposures only if safe and directed by command.
- Consult current ERG Guide 112 and follow SOP/SOG.
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UN 0428 — Articles, pyrotechnic for technical purp HAZMAT RADIO NOTE — UN 0428
Product: Articles, pyrotechnic for technical purposes
Class 1 / Explosive 1.1G / ERG 112
PPE: Level A or B with full structural firefighting gear; SCBA mandatory; blast-resistant barriers; maintain maximum distance
ISOLATION: ERG 112: Initial isolation 500m in all directions; if fire or explosion occurs, evacuate 1600m in all directions; mass explosion hazard requires large safety perimeter
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 0428 — Articles, pyrotechnic for technical purposes
Class: 1 | Placard: Explosive 1.1G | ERG Guide: 112
Appearance: Manufactured articles containing pyrotechnic compositions designed for technical applications. Typically solid devices in various colors and configurations, containing metal powders, oxidizers, and binders that produce light, heat, smoke, or sound effects.
Water Reactivity: May contain water-reactive metal powders; water generally not effective for extinguishment
Extinguishing: Dry chemical, sand, earth; flood with large quantities of water from distance if feasible; do not use CO2 or Halon
PPE: Level A or B with full structural firefighting gear; SCBA mandatory; blast-resistant barriers; maintain maximum distance
Isolation: ERG 112: Initial isolation 500m in all directions; if fire or explosion occurs, evacuate 1600m in all directions; mass explosion hazard requires large safety perimeter
— Key Hazards —
• Mass explosion hazard — entire load may detonate simultaneously.
• Severe blast overpressure and fragmentation.
• Sensitive to heat, shock, and friction.
— First Actions —
• CALL 911. Then call emergency response telephone number on shipping paper.
• Establish large isolation zone — minimum 500 meters in all directions.
• Stage upwind, uphill; limit personnel to essential responders only.
• Request Hazmat + law enforcement + additional resources immediately.
SOURCE: allfirefighter.com/hazmat/un/0428 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN0428 Articles, pyrotechnic for technical purposes Cls1 ERG112 | allfirefighter.com/hazmat/un/0428SMS / 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/0428
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
Mass explosion hazard — entire load may detonate simultaneously. Severe blast overpressure and fragmentation. Sensitive to heat, shock, and friction. Secondary fire and debris hazard.
CALL 911. Then call emergency response telephone number on shipping paper. Establish large isolation zone — minimum 500 meters in all directions. Stage upwind, uphill; limit personnel to essential responders only.
Level A or B with full structural firefighting gear; SCBA mandatory; blast-resistant barriers; maintain maximum distance
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.