☣️ UN 0341 • CLASS 1
Nitrocellulose, dry
Placard: Explosive 1.3C. 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 0341
Class: 1
Placard type: Explosive 1.3C
ERG: Guide 112 (check current ERG)
Isolation: ERG 112: Initial isolation 500m in all directions. Evacuate 1600m downwind if material is on fire or involved in fire. Treat as explosive hazard.
Chemical & Response Details
| Also known as | Cellulose nitrateGuncottonPyroxylinNitrocottonCollodion cotton |
| CAS Number | 9004-70-0 |
| Appearance | White to slightly yellow fibrous solid or cotton-like material. Odorless when pure, may have slight ether-like odor if residual solvents present. Highly flammable solid at room temperature. |
| Flash Point | Not applicable (explosive solid, ignites readily) |
| Boiling Point | Not applicable (decomposes before boiling, auto-ignites at approximately 160-170C) |
| Vapor Density | Not applicable (solid material) |
| Water Reactivity | No significant reaction with water, but may increase sensitivity when dry |
| Extinguishing | Do not use water on dry nitrocellulose fires. Use dry chemical, sand, or CO2. Water may be used on wetted material only. |
| PPE | ⚠️ Level B minimum with full protective clothing. SCBA required. Fire-resistant protective gear for fire scenarios. Avoid static-generating materials. |
| Isolation | ERG 112: Initial isolation 500m in all directions. Evacuate 1600m downwind if material is on fire or involved in fire. Treat as explosive hazard. |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- Fire and burning hazard — not mass explosion.
- Intense heat and possible fragment projection.
- May deflagrate and initiate other materials.
- Smoke and toxic combustion products.
First actions (field-minded)
- CALL 911. Then call emergency response telephone number on shipping paper.
- Isolate area; stage upwind — fire and fragment hazard.
- Request Hazmat + law enforcement.
- Control ignition sources; deny entry.
- Consult current ERG Guide 112 and follow SOP/SOG.
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UN 0341 — Nitrocellulose, dry HAZMAT RADIO NOTE — UN 0341
Product: Nitrocellulose, dry
Class 1 / Explosive 1.3C / ERG 112
PPE: Level B minimum with full protective clothing. SCBA required. Fire-resistant protective gear for fire scenarios. Avoid static-generating materials.
ISOLATION: ERG 112: Initial isolation 500m in all directions. Evacuate 1600m downwind if material is on fire or involved in fire. Treat as explosive hazard.
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 0341 — Nitrocellulose, dry
Class: 1 | Placard: Explosive 1.3C | ERG Guide: 112
Appearance: White to slightly yellow fibrous solid or cotton-like material. Odorless when pure, may have slight ether-like odor if residual solvents present. Highly flammable solid at room temperature.
Water Reactivity: No significant reaction with water, but may increase sensitivity when dry
Extinguishing: Do not use water on dry nitrocellulose fires. Use dry chemical, sand, or CO2. Water may be used on wetted material only.
PPE: Level B minimum with full protective clothing. SCBA required. Fire-resistant protective gear for fire scenarios. Avoid static-generating materials.
Isolation: ERG 112: Initial isolation 500m in all directions. Evacuate 1600m downwind if material is on fire or involved in fire. Treat as explosive hazard.
— Key Hazards —
• Fire and burning hazard — not mass explosion.
• Intense heat and possible fragment projection.
• May deflagrate and initiate other materials.
— First Actions —
• CALL 911. Then call emergency response telephone number on shipping paper.
• Isolate area; stage upwind — fire and fragment hazard.
• Request Hazmat + law enforcement.
• Control ignition sources; deny entry.
SOURCE: allfirefighter.com/hazmat/un/0341 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN0341 Nitrocellulose, dry Cls1 ERG112 | ERG 112: Initial isolation 500m in all directions. Evacuate 1600m downwind if ma | allfirefighter.com/hazmat/un/0341SMS / 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/0341
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
Fire and burning hazard — not mass explosion. Intense heat and possible fragment projection. May deflagrate and initiate other materials. Smoke and toxic combustion products.
CALL 911. Then call emergency response telephone number on shipping paper. Isolate area; stage upwind — fire and fragment hazard. Request Hazmat + law enforcement.
Level B minimum with full protective clothing. SCBA required. Fire-resistant protective gear for fire scenarios. Avoid static-generating materials.
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.