☣️ UN 3270 • CLASS 4
Nitrocellulose membrane filters
Placard: Flammable Solid. 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 3270
Class: 4
Placard type: Flammable Solid
ERG: Guide 133 (check current ERG)
Isolation: ERG 133: isolate spill 25m all directions; if fire isolate 800m all directions, evacuate 800m downwind
Chemical & Response Details
| Also known as | Cellulose nitrateNitrated celluloseCollodion cottonPyroxylinGuncotton (high nitrogen content)NC membranes |
| CAS Number | 9004-70-0 |
| Appearance | White to slightly yellow solid membrane or filter material, odorless or slight chemical odor. Typically supplied as thin sheets or discs in dry or wetted condition. |
| Flash Point | Not applicable (self-reactive solid, ignites readily at 160-170C) |
| Boiling Point | Not applicable (decomposes before boiling) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | No significant reaction with water; wetting with water increases stability and reduces fire risk |
| Extinguishing | Water spray to cool containers, CO2, dry chemical; keep wetted if possible to reduce ignitability |
| PPE | ⚠️ Level C minimum for handling; Level B with SCBA if fire or decomposition occurring; fire-resistant clothing for fire response |
| Isolation | ERG 133: isolate spill 25m all directions; if fire isolate 800m all directions, evacuate 800m downwind |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- Flammable/combustible material.
- May be ignited by friction, heat, sparks or flames.
- Some may burn rapidly with flare-burning effect.
- Powders, dusts, shavings, borings, turnings or cuttings may explode or burn with explosive violence.
- Substance may be transported in a molten form at a temperature that may be above its flash point.
- May re-ignite after fire is extinguished.
- Fire may produce irritating and/or toxic gases.
- Contact may cause burns to skin and eyes.
First actions (field-minded)
- CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper
- Keep unauthorized personnel away.
- Stay upwind, uphill and/or upstream.
- Isolate spill or leak area for at least 25 meters (75 feet) in all directions.
- Consider initial downwind evacuation for at least 100 meters (330 feet).
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UN 3270 — Nitrocellulose membrane filters HAZMAT RADIO NOTE — UN 3270
Product: Nitrocellulose membrane filters
Class 4 / Flammable Solid / ERG 133
PPE: Level C minimum for handling; Level B with SCBA if fire or decomposition occurring; fire-resistant clothing for fire response
ISOLATION: ERG 133: isolate spill 25m all directions; if fire isolate 800m all directions, evacuate 800m 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 3270 — Nitrocellulose membrane filters
Class: 4 | Placard: Flammable Solid | ERG Guide: 133
Appearance: White to slightly yellow solid membrane or filter material, odorless or slight chemical odor. Typically supplied as thin sheets or discs in dry or wetted condition.
Water Reactivity: No significant reaction with water; wetting with water increases stability and reduces fire risk
Extinguishing: Water spray to cool containers, CO2, dry chemical; keep wetted if possible to reduce ignitability
PPE: Level C minimum for handling; Level B with SCBA if fire or decomposition occurring; fire-resistant clothing for fire response
Isolation: ERG 133: isolate spill 25m all directions; if fire isolate 800m all directions, evacuate 800m downwind
— Key Hazards —
• Flammable/combustible material.
• May be ignited by friction, heat, sparks or flames.
• Some may burn rapidly with flare-burning effect.
— First Actions —
• CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper
• Keep unauthorized personnel away.
• Stay upwind, uphill and/or upstream.
• Isolate spill or leak area for at least 25 meters (75 feet) in all directions.
SOURCE: allfirefighter.com/hazmat/un/3270 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN3270 Nitrocellulose membrane filters Cls4 ERG133 | allfirefighter.com/hazmat/un/3270SMS / 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/3270
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FAQ
Flammable/combustible material. May be ignited by friction, heat, sparks or flames. Some may burn rapidly with flare-burning effect. Powders, dusts, shavings, borings, turnings or cuttings may explode or burn with explosive violence. Substance may be transported in a molten form at a temperature that may be above its flash point. May re-ignite after fire is extinguished. Fire may produce irritating and/or toxic gases. Contact may cause burns to skin and eyes.
CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper Keep unauthorized personnel away. Stay upwind, uphill and/or upstream.
Level C minimum for handling; Level B with SCBA if fire or decomposition occurring; fire-resistant clothing for fire response
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 133 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.