☣️ UN 2861 • CLASS 6
UN 2861 — Ammonium polyvanadate
Placard: Toxic. ERG Guide 151. 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 2861 Quick Details
UN 2861
Product name: Ammonium polyvanadate
DOT Class: 6
Placard type: Toxic
ERG Guide: 151 (check current ERG)
Initial isolation: ERG 151: Isolate spill area at least 25m in all directions; evacuate immediate area if fire or large spill; treat as toxic inhalation hazard
Common Hazards of UN 2861
- Highly toxic, may be fatal if inhaled, ingested or absorbed through skin.
- Avoid any skin contact.
- Fire may 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
- Containers may explode when heated.
- Runoff may pollute waterways.
Chemical Identity & Physical Properties
| Also known as | Ammonium metavanadateAmmonium vanadateVanadate (VO31-), ammoniumAmmonium vanadium oxide |
| CAS Number | 12027-06-4 |
| Appearance | White to pale yellow crystalline powder or solid. Odorless. Soluble in water. |
| Flash Point | Not applicable (inorganic solid) |
| Boiling Point | Decomposes at approximately 210C (410F) before boiling |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Soluble in water; no violent reaction but forms toxic solutions |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 2861
Extinguishing Media
Dry chemical, CO2, water spray for fire control; no special foam restrictions
PPE Requirements
⚠️ Level B minimum; SCBA required; full chemical protective suit for spills; avoid all skin contact due to high toxicity
Isolation & Evacuation
ERG 151: Isolate spill area at least 25m in all directions; evacuate immediate area if fire or large spill; treat as toxic inhalation hazard
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 151).
First Actions for a UN 2861 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 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 2861 — Ammonium polyvanadateHAZMAT RADIO NOTE — UN 2861
Product: Ammonium polyvanadate
Class 6 / Toxic / ERG 151
PPE: Level B minimum; SCBA required; full chemical protective suit for spills; avoid all skin contact due to high toxicity
ISOLATION: ERG 151: Isolate spill area at least 25m in all directions; evacuate immediate area if fire or large spill; treat as toxic inhalation hazard
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 2861 — Ammonium polyvanadate
Class: 6 | Placard: Toxic | ERG Guide: 151
Appearance: White to pale yellow crystalline powder or solid. Odorless. Soluble in water.
Water Reactivity: Soluble in water; no violent reaction but forms toxic solutions
Extinguishing: Dry chemical, CO2, water spray for fire control; no special foam restrictions
PPE: Level B minimum; SCBA required; full chemical protective suit for spills; avoid all skin contact due to high toxicity
Isolation: ERG 151: Isolate spill area at least 25m in all directions; evacuate immediate area if fire or large spill; treat as toxic inhalation hazard
— Key Hazards —
• Highly toxic, may be fatal if inhaled, ingested or absorbed through skin.
• Avoid any skin contact.
• Fire may produce irritating, corrosive and/or toxic gases.
— 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 in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters
SOURCE: allfirefighter.com/hazmat/un/2861 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN2861 Ammonium polyvanadate Cls6 ERG151 | ERG 151: Isolate spill area at least 25m in all directions; evacuate immediate a | allfirefighter.com/hazmat/un/2861SMS / 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/2861
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Frequently Asked Questions about UN 2861
Highly toxic, may be fatal if inhaled, ingested or absorbed through skin. Avoid any skin contact. Fire may 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 Containers may explode when heated. Runoff may pollute waterways.
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; SCBA required; full chemical protective suit for spills; avoid all skin contact due to high toxicity
Water reactivity: Soluble in water; no violent reaction but forms toxic solutions. Recommended extinguishing: Dry chemical, CO2, water spray for fire control; no special foam restrictions.
ERG Guide 151 recommendation: ERG 151: Isolate spill area at least 25m in all directions; evacuate immediate area if fire or large spill; treat as toxic inhalation hazard
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 151 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.