☣️ UN 2475 • CLASS 8
Vanadium trichloride
Placard: Corrosive. 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 2475
Class: 8
Placard type: Corrosive
ERG: Guide 157 (check current ERG)
Isolation: ERG 157: Initially isolate 50m in all directions; protect personnel from vapors/fumes; for large spills isolate 100m and consider evacuation
Chemical & Response Details
| Also known as | Vanadium(III) chlorideVanadium chlorideTrichlorovanadiumVCl3 |
| CAS Number | 7718-98-1 |
| Appearance | Pink to purple crystalline solid or powder. Hygroscopic with no distinct odor. Deliquesces in moist air forming a green solution. |
| Flash Point | Not applicable (non-combustible solid) |
| Boiling Point | Decomposes before boiling at approximately 600C (1112F) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Reacts with water generating heat and hydrogen chloride fumes; highly hygroscopic |
| Extinguishing | Dry chemical, dry sand, soda ash; do not use water or foam |
| PPE | ⚠️ Level B minimum with full face SCBA; impervious chemical protective clothing required; corrosive to skin and respiratory tract |
| Isolation | ERG 157: Initially isolate 50m in all directions; protect personnel from vapors/fumes; for large spills isolate 100m and consider evacuation |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- TOXIC and/or CORROSIVE; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance
- Reaction with water or moist air may release toxic, corrosive or flammable gases.
- Reaction with water may generate much heat that will increase the concentration of fumes in the air.
- Fire will produce irritating, corrosive and/or toxic gases.
- Runoff from fire control or dilution water may be corrosive and/or toxic and cause environmental
- Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive
- UN1802, UN2032, UN3084, UN3093, UN1796 (above 50%), UN1826 (above 50%), and UN2031 (above
- Vapors may accumulate in confined areas (basement, tanks, hopper/tank cars, etc.).
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.
- 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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UN 2475 — Vanadium trichloride HAZMAT RADIO NOTE — UN 2475
Product: Vanadium trichloride
Class 8 / Corrosive / ERG 157
PPE: Level B minimum with full face SCBA; impervious chemical protective clothing required; corrosive to skin and respiratory tract
ISOLATION: ERG 157: Initially isolate 50m in all directions; protect personnel from vapors/fumes; for large spills isolate 100m and consider evacuation
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 2475 — Vanadium trichloride
Class: 8 | Placard: Corrosive | ERG Guide: 157
Appearance: Pink to purple crystalline solid or powder. Hygroscopic with no distinct odor. Deliquesces in moist air forming a green solution.
Water Reactivity: Reacts with water generating heat and hydrogen chloride fumes; highly hygroscopic
Extinguishing: Dry chemical, dry sand, soda ash; do not use water or foam
PPE: Level B minimum with full face SCBA; impervious chemical protective clothing required; corrosive to skin and respiratory tract
Isolation: ERG 157: Initially isolate 50m in all directions; protect personnel from vapors/fumes; for large spills isolate 100m and consider evacuation
— Key Hazards —
• TOXIC and/or CORROSIVE; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance
• Reaction with water or moist air may release toxic, corrosive or flammable 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/2475 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN2475 Vanadium trichloride Cls8 ERG157 | ERG 157: Initially isolate 50m in all directions; protect personnel from vapors/ | allfirefighter.com/hazmat/un/2475SMS / 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/2475
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FAQ
TOXIC and/or CORROSIVE; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance Reaction with water or moist air may release toxic, corrosive or flammable gases. Reaction with water may generate much heat that will increase the concentration of fumes in the air. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause environmental Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive UN1802, UN2032, UN3084, UN3093, UN1796 (above 50%), UN1826 (above 50%), and UN2031 (above Vapors may accumulate in confined areas (basement, tanks, hopper/tank cars, etc.).
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 with full face SCBA; impervious chemical protective clothing required; corrosive to skin and respiratory tract
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 157 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.