☣️ UN 0445 • CLASS 1
Nitrocellulose, dry
Placard: Explosive 1.1C. 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 0445
Class: 1
Placard type: Explosive 1.1C
ERG: Guide 112 (check current ERG)
Isolation: ERG 112: isolate 800m (1/2 mile) all directions; if fire or explosion, evacuate 1600m (1 mile) downwind
Chemical & Response Details
| Also known as | Cellulose nitratePyroxylinGuncottonFlash paperCollodion cottonNitrocotton |
| CAS Number | 9004-70-0 |
| Appearance | White to slightly yellow fibrous solid or cottony material. Odorless or slight ether-like odor. Highly flammable and explosive when dry. |
| Flash Point | Not applicable (explosive solid) |
| Boiling Point | Not applicable (decomposes explosively) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | No significant reaction with water, but wetting reduces explosion hazard |
| Extinguishing | Water fog only from distance; no foam, no dry chemical on bulk quantities |
| PPE | ⚠️ Full structural firefighting gear with SCBA; approach only if wetted; maximum distance operations |
| Isolation | ERG 112: isolate 800m (1/2 mile) all directions; if fire or explosion, evacuate 1600m (1 mile) downwind |
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 0445 — Nitrocellulose, dry HAZMAT RADIO NOTE — UN 0445
Product: Nitrocellulose, dry
Class 1 / Explosive 1.1C / ERG 112
PPE: Full structural firefighting gear with SCBA; approach only if wetted; maximum distance operations
ISOLATION: ERG 112: isolate 800m (1/2 mile) all directions; if fire or explosion, evacuate 1600m (1 mile) downwind
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 0445 — Nitrocellulose, dry
Class: 1 | Placard: Explosive 1.1C | ERG Guide: 112
Appearance: White to slightly yellow fibrous solid or cottony material. Odorless or slight ether-like odor. Highly flammable and explosive when dry.
Water Reactivity: No significant reaction with water, but wetting reduces explosion hazard
Extinguishing: Water fog only from distance; no foam, no dry chemical on bulk quantities
PPE: Full structural firefighting gear with SCBA; approach only if wetted; maximum distance operations
Isolation: ERG 112: isolate 800m (1/2 mile) all directions; if fire or explosion, evacuate 1600m (1 mile) downwind
— 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/0445 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN0445 Nitrocellulose, dry Cls1 ERG112 | ERG 112: isolate 800m (1/2 mile) all directions; if fire or explosion, evacuate | allfirefighter.com/hazmat/un/0445SMS / 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/0445
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.
Full structural firefighting gear with SCBA; approach only if wetted; maximum distance operations
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.