☣️ UN 0343 • CLASS 1
Nitrocellulose, plasticized
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 0343
Class: 1
Placard type: Explosive 1.3C
ERG: Guide 112 (check current ERG)
Isolation: ERG 112: isolate 500m in all directions; evacuate 1600m downwind if material is on fire or involved in fire
Chemical & Response Details
| Also known as | Cellulose nitrateNitrated celluloseGuncotton (plasticized)PyroxylinCollodion cotton |
| CAS Number | 9004-70-0 |
| Appearance | White to yellowish fibrous solid or film, often with a characteristic camphor-like odor from plasticizers. Supplied in dampened or plasticized form to reduce explosive sensitivity. |
| Flash Point | Not applicable (explosive solid) |
| Boiling Point | Not applicable (decomposes) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | No significant reaction with water; however, wetting is used as a stabilization measure during transport |
| Extinguishing | Water spray for cooling, CO2, dry chemical; avoid applying agents that could dry out the plasticizer |
| PPE | ⚠️ Level B minimum; SCBA required; full structural firefighting gear with face shield during fire response |
| Isolation | ERG 112: isolate 500m in all directions; evacuate 1600m downwind if material is on fire or involved in fire |
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 0343 — Nitrocellulose, plasticized HAZMAT RADIO NOTE — UN 0343
Product: Nitrocellulose, plasticized
Class 1 / Explosive 1.3C / ERG 112
PPE: Level B minimum; SCBA required; full structural firefighting gear with face shield during fire response
ISOLATION: ERG 112: isolate 500m in all directions; evacuate 1600m downwind if material is on fire or involved in fire
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 0343 — Nitrocellulose, plasticized
Class: 1 | Placard: Explosive 1.3C | ERG Guide: 112
Appearance: White to yellowish fibrous solid or film, often with a characteristic camphor-like odor from plasticizers. Supplied in dampened or plasticized form to reduce explosive sensitivity.
Water Reactivity: No significant reaction with water; however, wetting is used as a stabilization measure during transport
Extinguishing: Water spray for cooling, CO2, dry chemical; avoid applying agents that could dry out the plasticizer
PPE: Level B minimum; SCBA required; full structural firefighting gear with face shield during fire response
Isolation: ERG 112: isolate 500m in all directions; evacuate 1600m downwind if material is on fire or involved in fire
— 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/0343 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN0343 Nitrocellulose, plasticized Cls1 ERG112 | allfirefighter.com/hazmat/un/0343SMS / 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/0343
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; SCBA required; full structural firefighting gear with face shield during fire response
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.