☣️ UN 1387 • CLASS 4
UN 1387 — Wool waste, wet
Placard: Spontaneously Combustible. ERG Guide 133. 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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UN 1387 Quick Details
UN 1387
Product name: Wool waste, wet
DOT Class: 4
Placard type: Spontaneously Combustible
ERG Guide: 133 (check current ERG)
Initial isolation: ERG 133: isolate spill or leak area immediately for at least 25-50m in all directions; if fire involved, isolate 800m in all directions
Common Hazards of UN 1387
- 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.
Chemical Identity & Physical Properties
| Also known as | Wet wool wasteMoist wool scrapWool sweepingsWool fibers waste |
| Appearance | Fibrous material consisting of wool fibers that have been moistened or are naturally damp. Typically off-white to brown in color with a characteristic wool odor. |
| Flash Point | Not applicable (combustible solid) |
| Boiling Point | Not applicable (solid) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | No significant reaction; material is already wet |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 1387
Extinguishing Media
Water spray, foam, dry chemical, CO2; water may be used to cool and wet down material
PPE Requirements
⚠️ Structural firefighters' protective clothing; SCBA for fire conditions; avoid dust inhalation
Isolation & Evacuation
ERG 133: isolate spill or leak area immediately for at least 25-50m in all directions; if fire involved, isolate 800m in all directions
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 133).
First Actions for a UN 1387 Incident
- 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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📋 Copy & Share Field Card
UN 1387 — Wool waste, wetHAZMAT RADIO NOTE — UN 1387
Product: Wool waste, wet
Class 4 / Spontaneously Combustible / ERG 133
PPE: Structural firefighters' protective clothing; SCBA for fire conditions; avoid dust inhalation
ISOLATION: ERG 133: isolate spill or leak area immediately for at least 25-50m in all directions; if fire involved, isolate 800m in all directions
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 1387 — Wool waste, wet
Class: 4 | Placard: Spontaneously Combustible | ERG Guide: 133
Appearance: Fibrous material consisting of wool fibers that have been moistened or are naturally damp. Typically off-white to brown in color with a characteristic wool odor.
Water Reactivity: No significant reaction; material is already wet
Extinguishing: Water spray, foam, dry chemical, CO2; water may be used to cool and wet down material
PPE: Structural firefighters' protective clothing; SCBA for fire conditions; avoid dust inhalation
Isolation: ERG 133: isolate spill or leak area immediately for at least 25-50m in all directions; if fire involved, isolate 800m in all directions
— 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/1387 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1387 Wool waste, wet Cls4 ERG133 | ERG 133: isolate spill or leak area immediately for at least 25-50m in all direc | allfirefighter.com/hazmat/un/1387SMS / 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/1387
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Frequently Asked Questions about UN 1387
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.
Structural firefighters' protective clothing; SCBA for fire conditions; avoid dust inhalation
Water reactivity: No significant reaction; material is already wet. Recommended extinguishing: Water spray, foam, dry chemical, CO2; water may be used to cool and wet down material.
ERG Guide 133 recommendation: ERG 133: isolate spill or leak area immediately for at least 25-50m in all directions; if fire involved, isolate 800m in all directions
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.