☣️ UN 1994 • CLASS 6
UN 1994 — Iron pentacarbonyl
Placard: Toxic. ERG Guide 136. 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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UN 1994 Quick Details
UN 1994
Product name: Iron pentacarbonyl
DOT Class: 6
Placard type: Toxic
ERG Guide: 136 (check current ERG)
Initial isolation: ERG 136: isolate spill/leak area immediately for at least 50m in all directions; increase isolation if fire involved
Common Hazards of UN 1994
- Extremely flammable; will ignite itself if exposed to air.
- Burns rapidly, releasing dense, white, irritating fumes.
- Substance may be transported in a molten form.
- May re-ignite after fire is extinguished.
- Corrosives in contact with metals may evolve flammable hydrogen gas.
- Containers may explode when heated.
- Fire will produce irritating, corrosive and/or toxic gases.
- TOXIC and/or CORROSIVE; ingestion of substance or inhalation of decomposition products will cause
Chemical Identity & Physical Properties
| Also known as | Iron carbonylPentacarbonylironIron pentacarbonylCarbonyl iron |
| CAS Number | 13463-40-6 |
| Appearance | Clear to yellow or amber oily liquid with a musty odor. Pyrophoric - ignites spontaneously in air at room temperature. |
| Flash Point | -20C (-4F) |
| Boiling Point | 103C (217F) |
| Vapor Density | 6.8 (much heavier than air) |
| Water Reactivity | Decomposes slowly in water, releasing carbon monoxide gas |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 1994
Extinguishing Media
Carbon dioxide or dry chemical only; do not use water or foam due to pyrophoric nature
PPE Requirements
⚠️ Level A required; SCBA and fully encapsulating chemical protective suit; pyrophoric material requires extreme caution
Isolation & Evacuation
ERG 136: isolate spill/leak area immediately for at least 50m in all directions; increase isolation if fire involved
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 136).
First Actions for a UN 1994 Incident
- CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper
- Stay upwind, uphill and/or upstream.
- Keep unauthorized personnel away.
- Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters
- For highlighted materials: see Table 1 - Initial Isolation and Protective Action Distances.
- For non-highlighted materials: increase the immediate precautionary measure distance, in the downwind
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📋 Copy & Share Field Card
UN 1994 — Iron pentacarbonylHAZMAT RADIO NOTE — UN 1994
Product: Iron pentacarbonyl
Class 6 / Toxic / ERG 136
PPE: Level A required; SCBA and fully encapsulating chemical protective suit; pyrophoric material requires extreme caution
ISOLATION: ERG 136: isolate spill/leak area immediately for at least 50m in all directions; increase isolation if fire involved
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 1994 — Iron pentacarbonyl
Class: 6 | Placard: Toxic | ERG Guide: 136
Appearance: Clear to yellow or amber oily liquid with a musty odor. Pyrophoric - ignites spontaneously in air at room temperature.
Water Reactivity: Decomposes slowly in water, releasing carbon monoxide gas
Extinguishing: Carbon dioxide or dry chemical only; do not use water or foam due to pyrophoric nature
PPE: Level A required; SCBA and fully encapsulating chemical protective suit; pyrophoric material requires extreme caution
Isolation: ERG 136: isolate spill/leak area immediately for at least 50m in all directions; increase isolation if fire involved
— Key Hazards —
• Extremely flammable; will ignite itself if exposed to air.
• Burns rapidly, releasing dense, white, irritating fumes.
• Substance may be transported in a molten form.
— First Actions —
• CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper
• Stay upwind, uphill and/or upstream.
• Keep unauthorized personnel away.
• Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters
SOURCE: allfirefighter.com/hazmat/un/1994 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1994 Iron pentacarbonyl Cls6 ERG136 | ERG 136: isolate spill/leak area immediately for at least 50m in all directions; | allfirefighter.com/hazmat/un/1994SMS / 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/1994
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Frequently Asked Questions about UN 1994
Extremely flammable; will ignite itself if exposed to air. Burns rapidly, releasing dense, white, irritating fumes. Substance may be transported in a molten form. May re-ignite after fire is extinguished. Corrosives in contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Fire will produce irritating, corrosive and/or toxic gases. TOXIC and/or CORROSIVE; ingestion of substance or inhalation of decomposition products will cause
CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper Stay upwind, uphill and/or upstream. Keep unauthorized personnel away.
Level A required; SCBA and fully encapsulating chemical protective suit; pyrophoric material requires extreme caution
Water reactivity: Decomposes slowly in water, releasing carbon monoxide gas. Recommended extinguishing: Carbon dioxide or dry chemical only; do not use water or foam due to pyrophoric nature.
ERG Guide 136 recommendation: ERG 136: isolate spill/leak area immediately for at least 50m in all directions; increase isolation if fire involved
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 136 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.