☣️ UN 1608 • CLASS 6
UN 1608 — Ferrous arsenate
Placard: Toxic. ERG Guide 151. 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.
Advertisement
UN 1608 Quick Details
UN 1608
Product name: Ferrous arsenate
DOT Class: 6
Placard type: Toxic
ERG Guide: 151 (check current ERG)
Initial isolation: ERG 151: isolate spill 25m all directions; large spill isolate 50m, consider evacuation 300m downwind
Common Hazards of UN 1608
- 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 | Iron(II) arsenateFerrous arsenate dibasicIron arsenateArsenate de fer |
| CAS Number | 10102-49-5 |
| Appearance | Gray to greenish-gray odorless solid powder or granular material at room temperature. |
| Flash Point | Not applicable (non-combustible solid) |
| Boiling Point | Not applicable (decomposes before boiling) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Slowly soluble in water; may release toxic arsenic compounds in solution |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 1608
Extinguishing Media
Water spray, dry chemical, CO2; avoid creating dust clouds
PPE Requirements
⚠️ Level A or B required; full-face SCBA, chemical-resistant suit, double gloves; prevent any skin contact
Isolation & Evacuation
ERG 151: isolate spill 25m all directions; large spill isolate 50m, consider evacuation 300m downwind
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 151).
First Actions for a UN 1608 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
Advertisement
📋 Copy & Share Field Card
UN 1608 — Ferrous arsenateHAZMAT RADIO NOTE — UN 1608
Product: Ferrous arsenate
Class 6 / Toxic / ERG 151
PPE: Level A or B required; full-face SCBA, chemical-resistant suit, double gloves; prevent any skin contact
ISOLATION: ERG 151: isolate spill 25m all directions; large spill isolate 50m, consider evacuation 300m downwind
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 1608 — Ferrous arsenate
Class: 6 | Placard: Toxic | ERG Guide: 151
Appearance: Gray to greenish-gray odorless solid powder or granular material at room temperature.
Water Reactivity: Slowly soluble in water; may release toxic arsenic compounds in solution
Extinguishing: Water spray, dry chemical, CO2; avoid creating dust clouds
PPE: Level A or B required; full-face SCBA, chemical-resistant suit, double gloves; prevent any skin contact
Isolation: ERG 151: isolate spill 25m all directions; large spill isolate 50m, consider evacuation 300m downwind
— 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/1608 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1608 Ferrous arsenate Cls6 ERG151 | ERG 151: isolate spill 25m all directions; large spill isolate 50m, consider eva | allfirefighter.com/hazmat/un/1608SMS / 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/1608
Advertisement
Frequently Asked Questions about UN 1608
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 A or B required; full-face SCBA, chemical-resistant suit, double gloves; prevent any skin contact
Water reactivity: Slowly soluble in water; may release toxic arsenic compounds in solution. Recommended extinguishing: Water spray, dry chemical, CO2; avoid creating dust clouds.
ERG Guide 151 recommendation: ERG 151: isolate spill 25m all directions; large spill isolate 50m, consider evacuation 300m downwind
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.