☣️ UN 2213 • CLASS 4
Paraformaldehyde
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 2213
Class: 4
Placard type: Flammable Solid
ERG: Guide 133 (check current ERG)
Isolation: ERG 133: isolate spill 25-50m all directions; for large fire isolate 800m and evacuate downwind
Chemical & Response Details
| Also known as | polyoxymethyleneparaformtrioxane polymerformaldehyde polymer |
| CAS Number | 30525-89-4 |
| Appearance | White crystalline powder or granular solid with a formaldehyde-like pungent odor. Solid at room temperature. |
| Flash Point | 70C (158F) (solid combustible) |
| Boiling Point | Not applicable (decomposes above 120C releasing formaldehyde gas) |
| Vapor Density | Not applicable (solid, but releases formaldehyde vapor which is 1.03) |
| Water Reactivity | Slowly hydrolyzes in water releasing formaldehyde; no violent reaction |
| Extinguishing | Dry chemical, CO2, water spray, foam suitable for Class B fires |
| PPE | ⚠️ Level B minimum recommended; SCBA required due to formaldehyde release; chemical-resistant gloves and suit |
| Isolation | ERG 133: isolate spill 25-50m all directions; for large fire isolate 800m and evacuate 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 2213 — Paraformaldehyde HAZMAT RADIO NOTE — UN 2213
Product: Paraformaldehyde
Class 4 / Flammable Solid / ERG 133
PPE: Level B minimum recommended; SCBA required due to formaldehyde release; chemical-resistant gloves and suit
ISOLATION: ERG 133: isolate spill 25-50m all directions; for large fire isolate 800m and evacuate 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 2213 — Paraformaldehyde
Class: 4 | Placard: Flammable Solid | ERG Guide: 133
Appearance: White crystalline powder or granular solid with a formaldehyde-like pungent odor. Solid at room temperature.
Water Reactivity: Slowly hydrolyzes in water releasing formaldehyde; no violent reaction
Extinguishing: Dry chemical, CO2, water spray, foam suitable for Class B fires
PPE: Level B minimum recommended; SCBA required due to formaldehyde release; chemical-resistant gloves and suit
Isolation: ERG 133: isolate spill 25-50m all directions; for large fire isolate 800m and evacuate 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/2213 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN2213 Paraformaldehyde Cls4 ERG133 | ERG 133: isolate spill 25-50m all directions; for large fire isolate 800m and ev | allfirefighter.com/hazmat/un/2213SMS / 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/2213
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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 B minimum recommended; SCBA required due to formaldehyde release; chemical-resistant gloves and suit
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.