UN 1712 — Zinc arsenate and zinc arsenite mixture
Placard: Toxic. ERG Guide 151. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
Zinc arsenate and zinc arsenite mixture is a highly toxic substance that can cause fatal injury if inhaled, ingested, or absorbed through the skin. It is essential to handle this substance with extreme care and follow proper emergency procedures.
Hazard overview: Zinc arsenate and zinc arsenite mixture is highly toxic and can cause fatal injury if inhaled, ingested, or absorbed through the skin.
Response guidance: In case of an emergency, evacuate the area immediately and provide fresh air. If inhaled, remove the person to fresh air and seek medical attention.
UN 1712 Quick Details
Common Hazards of UN 1712
- 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
Zinc arsenate and zinc arsenite mixture is a white to grayish-white odorless powder or granular solid at room temperature.
| 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 |
Fireground Response Guidance — UN 1712
Extinguishing Media
PPE Requirements
Wear Level B minimum personal protective equipment (PPE) with a full-face self-contained breathing apparatus (SCBA) required, chemical-resistant suit, gloves, and boots to prevent skin absorption.
Isolation & Evacuation
First Actions for a UN 1712 Incident
- 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
📋 Copy & Share Field Card
UN 1712 — Zinc arsenate and zinc arsenite mixtureUse for: Quick radio or face-to-face size-up. Short, structured, field-ready.
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
Use for: Quick text to command or incoming units. Fits in a single SMS.