☣️ UN 1712 • CLASS 6
Zinc arsenate and zinc arsenite mixture
Placard: Toxic. 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 1712
Class: 6
Placard type: Toxic
ERG: Guide 151 (check current ERG)
Isolation: ERG 151: isolate spill/leak area immediately for at least 25 meters in all directions; evacuate downwind 100 meters if powder released
Chemical & Response Details
| Also known as | Zinc arsenateZinc arseniteZinc orthoarsenateArsenous acid zinc saltZinc arsenate/arsenite blend |
| Appearance | White to grayish-white odorless powder or granular solid at room temperature. May appear as a mixed crystalline material. |
| Flash Point | Not applicable (non-combustible inorganic solid) |
| Boiling Point | Not applicable (decomposes before boiling) |
| Vapor Density | Not applicable (solid material) |
| Water Reactivity | Slightly soluble in water; no violent reaction but may slowly release toxic arsenic compounds |
| Extinguishing | Dry chemical, sand, or earth for surrounding fires; water spray for cooling containers only |
| PPE | ⚠️ Level B minimum with full-face SCBA required; chemical-resistant suit, gloves, and boots mandatory to prevent skin absorption |
| Isolation | ERG 151: isolate spill/leak area immediately for at least 25 meters in all directions; evacuate downwind 100 meters if powder released |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- 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.
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.
- 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 1712 — Zinc arsenate and zinc arsenite mixture HAZMAT RADIO NOTE — UN 1712
Product: Zinc arsenate and zinc arsenite mixture
Class 6 / Toxic / ERG 151
PPE: Level B minimum with full-face SCBA required; chemical-resistant suit, gloves, and boots mandatory to prevent skin absorption
ISOLATION: ERG 151: isolate spill/leak area immediately for at least 25 meters in all directions; evacuate downwind 100 meters if powder released
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 1712 — Zinc arsenate and zinc arsenite mixture
Class: 6 | Placard: Toxic | ERG Guide: 151
Appearance: White to grayish-white odorless powder or granular solid at room temperature. May appear as a mixed crystalline material.
Water Reactivity: Slightly soluble in water; no violent reaction but may slowly release toxic arsenic compounds
Extinguishing: Dry chemical, sand, or earth for surrounding fires; water spray for cooling containers only
PPE: Level B minimum with full-face SCBA required; chemical-resistant suit, gloves, and boots mandatory to prevent skin absorption
Isolation: ERG 151: isolate spill/leak area immediately for at least 25 meters in all directions; evacuate downwind 100 meters if powder released
— 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/1712 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1712 Zinc arsenate and zinc arsenite mixture Cls6 ERG151 | allfirefighter.com/hazmat/un/1712SMS / 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/1712
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FAQ
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 with full-face SCBA required; chemical-resistant suit, gloves, and boots mandatory to prevent skin absorption
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.