☣️ UN 2444 • CLASS 8
UN 2444 — Vanadium tetrachloride
Placard: Corrosive. ERG Guide 137. 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 2444 Quick Details
UN 2444
Product name: Vanadium tetrachloride
DOT Class: 8
Placard type: Corrosive
ERG Guide: 137 (check current ERG)
Initial isolation: ERG 137: Isolate spill 25-50m all directions. For large spills isolate 800m downwind. Evacuate immediate area if containers exposed to fire.
Common Hazards of UN 2444
- CORROSIVE and/or TOXIC; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance
- Fire will produce irritating, corrosive and/or toxic gases.
- Reaction with water may generate much heat that will increase the concentration of fumes in the air.
- Contact with molten substance may cause severe burns to skin and eyes.
- Runoff from fire control or dilution water may cause environmental contamination.
- EXCEPT FOR ACETIC ANHYDRIDE (UN1715), THAT IS FLAMMABLE, some of these materials may
- May ignite combustibles (wood, paper, oil, clothing, etc.).
- Substance will react with water (some violently), releasing corrosive and/or toxic gases and runoff.
Chemical Identity & Physical Properties
| Also known as | Vanadium(IV) chlorideTetrachlorovanadiumVanadium chloride |
| CAS Number | 7632-51-1 |
| Appearance | Reddish-brown fuming liquid with a pungent, irritating odor. Reacts vigorously with moisture in air producing corrosive fumes. |
| Flash Point | Not applicable (non-flammable but supports combustion) |
| Boiling Point | 154C (309F) |
| Vapor Density | 6.7 (much heavier than air) |
| Water Reactivity | Reacts violently with water producing heat, hydrochloric acid, and vanadium oxychloride fumes. Do not use water directly on material. |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 2444
Extinguishing Media
Dry chemical, soda ash, lime, sand. Do not use water or foam directly on material.
PPE Requirements
⚠️ Level A or B required; full-face SCBA, chemical-resistant suit, butyl rubber gloves. Avoid all contact with vapors and liquid.
Isolation & Evacuation
ERG 137: Isolate spill 25-50m all directions. For large spills isolate 800m downwind. Evacuate immediate area if containers exposed to fire.
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 137).
First Actions for a UN 2444 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.
- Ventilate closed spaces before entering, but only if properly trained and equipped.
- 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 2444 — Vanadium tetrachlorideHAZMAT RADIO NOTE — UN 2444
Product: Vanadium tetrachloride
Class 8 / Corrosive / ERG 137
PPE: Level A or B required; full-face SCBA, chemical-resistant suit, butyl rubber gloves. Avoid all contact with vapors and liquid.
ISOLATION: ERG 137: Isolate spill 25-50m all directions. For large spills isolate 800m downwind. Evacuate immediate area if containers exposed to 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 2444 — Vanadium tetrachloride
Class: 8 | Placard: Corrosive | ERG Guide: 137
Appearance: Reddish-brown fuming liquid with a pungent, irritating odor. Reacts vigorously with moisture in air producing corrosive fumes.
Water Reactivity: Reacts violently with water producing heat, hydrochloric acid, and vanadium oxychloride fumes. Do not use water directly on material.
Extinguishing: Dry chemical, soda ash, lime, sand. Do not use water or foam directly on material.
PPE: Level A or B required; full-face SCBA, chemical-resistant suit, butyl rubber gloves. Avoid all contact with vapors and liquid.
Isolation: ERG 137: Isolate spill 25-50m all directions. For large spills isolate 800m downwind. Evacuate immediate area if containers exposed to fire.
— Key Hazards —
• CORROSIVE and/or TOXIC; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance
• Fire will produce irritating, corrosive and/or toxic gases.
• Reaction with water may generate much heat that will increase the concentration of fumes in the air.
— 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.
• Ventilate closed spaces before entering, but only if properly trained and equipped.
SOURCE: allfirefighter.com/hazmat/un/2444 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN2444 Vanadium tetrachloride Cls8 ERG137 | ERG 137: Isolate spill 25-50m all directions. For large spills isolate 800m down | allfirefighter.com/hazmat/un/2444SMS / 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/2444
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Frequently Asked Questions about UN 2444
CORROSIVE and/or TOXIC; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance Fire will produce irritating, corrosive and/or toxic gases. Reaction with water may generate much heat that will increase the concentration of fumes in the air. Contact with molten substance may cause severe burns to skin and eyes. Runoff from fire control or dilution water may cause environmental contamination. EXCEPT FOR ACETIC ANHYDRIDE (UN1715), THAT IS FLAMMABLE, some of these materials may May ignite combustibles (wood, paper, oil, clothing, etc.). Substance will react with water (some violently), releasing corrosive and/or toxic gases and runoff.
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 A or B required; full-face SCBA, chemical-resistant suit, butyl rubber gloves. Avoid all contact with vapors and liquid.
Water reactivity: Reacts violently with water producing heat, hydrochloric acid, and vanadium oxychloride fumes. Do not use water directly on material.. Recommended extinguishing: Dry chemical, soda ash, lime, sand. Do not use water or foam directly on material..
ERG Guide 137 recommendation: ERG 137: Isolate spill 25-50m all directions. For large spills isolate 800m downwind. Evacuate immediate area if containers exposed to fire.
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 137 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.