UN 0225 — Boosters with detonator
Placard: Explosive 1.1. ERG Guide 112. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 0225 At a Glance
UN 0225 (Boosters with detonator) is listed as DOT Class 1.1B Explosive 1.1 and is assigned to ERG Guide 112. Use this page to review placard data, common hazards, PPE notes, isolation context, first actions, and related UN numbers.
UN 0225 is Boosters with detonator, a Class 1 explosive classified as Division 1.1, Compatibility Group B. It presents a mass explosion hazard, making isolation, distance, evacuation and qualified explosive-ordnance support the primary responder priorities.
Hazard overview: UN 0225 presents a mass explosion hazard. Fire, severe heat or other initiating conditions can result in a violent explosion with blast overpressure, fragmentation and debris. The presence of a detonator creates an additional initiation hazard. Responders should not approach, move or disturb damaged explosive articles unless directed by qualified explosive-ordnance personnel.
Response guidance: For a UN 0225 incident, establish incident command and verify the shipment using shipping papers, placards and package markings. Establish an appropriate protective perimeter, deny entry and request HazMat and qualified bomb-disposal or explosive-ordnance support. If fire threatens or involves the explosive cargo, prioritize withdrawal, evacuation and life safety rather than close-range firefighting. Use the current ERG Guide 112 and local SOP/SOG for incident-specific decisions.
Firefighter training notes: Training for UN 0225 should emphasize recognition of Division 1.1 and Compatibility Group B, the mass explosion hazard, the additional initiation hazard associated with detonator-equipped articles, and the limitations of firefighter PPE against blast effects. Responders should prioritize command, isolation, distance, evacuation and early notification of HazMat and qualified explosive-ordnance personnel.
Regulatory context: UN 0225 is regulated as a Class 1 explosive, Division 1.1, Compatibility Group B. Applicable packaging, transport, storage, security, quantity and emergency-response requirements vary by jurisdiction, transport mode and product configuration. Verify current DOT, ADR, IMDG, IATA and applicable state or local requirements using official regulatory sources and shipping documentation.
Storage & handling: Boosters with detonator should be stored and handled only in approved explosive-storage facilities and in accordance with applicable explosive-material regulations, manufacturer instructions and facility procedures. Protect explosive articles from heat, fire, impact, unauthorized access and other conditions identified by the applicable storage requirements. Damaged or suspect articles should be isolated and evaluated by qualified explosive-ordnance personnel.
UN 0225 Quick Details
Common Hazards of UN 0225
- UN 0225 is a Division 1.1 explosive with a mass explosion hazard.
- An explosion may produce severe blast overpressure, fragmentation and dangerous debris.
- Fire involving the explosive material or its packaging can result in a violent explosion.
- The detonator component can create additional initiation and handling hazards.
- Heat, impact, friction or other initiating conditions may increase the danger of compromised explosive material.
- Secondary fires, projectiles, structural damage and debris may create additional hazards following an explosion.
- Smoke and combustion products from an explosive fire may be irritating or toxic.
- The exact physical construction, explosive composition and packaging must be verified from shipping papers and product documentation.
Chemical Identity & Physical Properties
UN 0225 describes an explosive article consisting of a booster with a detonator. The exact dimensions, appearance, packaging, explosive composition and detonator construction can vary, so responders should not rely on generic physical descriptions for identification.
| Also known as | Boosters with detonatorBooster with detonatorExplosive booster with detonatorDetonator-equipped booster |
| Appearance | An explosive article consisting of a booster component with an associated detonator. Physical size, shape, color, packaging and explosive composition vary by manufacturer and application and should be confirmed from shipping papers and product documentation. |
| Flash Point | Not applicable to the explosive article. |
| Boiling Point | Not applicable to the explosive article; explosive materials may decompose rather than undergo normal boiling. |
| Vapor Density | Not applicable to the intact solid explosive article. |
| Water Reactivity | Water compatibility and effects depend on the specific explosive composition, detonator construction and packaging. Do not assume water will make the material safe or prevent detonation. |
Fireground Response Guidance — UN 0225
Extinguishing Media
PPE Requirements
Blast and fragmentation protection cannot be provided by ordinary firefighter PPE. Distance, cover, shielding and evacuation are the primary controls. SCBA and structural firefighting PPE may provide protection from smoke or secondary fire hazards when operating from a safe position, but they must not be considered protection against a mass explosion.
Isolation & Evacuation
First Actions for a UN 0225 Incident
- Establish incident command and identify the shipment from shipping papers, package markings and placards.
- Keep unauthorized personnel away and deny entry to the hazard area.
- Establish a protective perimeter based on the current ERG, quantity, packaging, fire involvement and incident conditions.
- Stage responders at a safe distance and, when practical, remain upwind and uphill.
- Request HazMat, law enforcement and qualified bomb-disposal or explosive-ordnance personnel when the material is damaged, exposed to fire or otherwise compromised.
- Do not handle, move, open, dismantle or disturb explosive articles or detonator components unless directed by appropriately qualified explosive-ordnance personnel.
- If fire is threatening or involving the explosive cargo, prioritize life safety, withdrawal and evacuation rather than close-range firefighting.
- Protect exposures only when this can be accomplished from a safe position and in accordance with incident command and local SOP/SOG.
- Use the current ERG Guide 112, shipping papers, product documentation and incident conditions to determine isolation and protective actions.
📋 Copy & Share Field Card
UN 0225 — Boosters with detonatorUse for: Quick radio or face-to-face size-up. Short, structured, field-ready.
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
Use for: Quick text to command or incoming units. Fits in a single SMS.