☣️ UN 1512 • CLASS 5
Zinc ammonium nitrite
Placard: Oxidizer. 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 1512
Class: 5
Placard type: Oxidizer
ERG: Guide 140 (check current ERG)
Isolation: ERG 140: isolate spill 25-50m; if fire or large spill, isolate 800m all directions, evacuate downwind 1600m
Chemical & Response Details
| Also known as | Zinc ammonium nitriteAmmonium zinc nitriteNitrous acid zinc ammonium salt |
| Appearance | White to pale yellow crystalline solid or powder. Odorless or slight ammonia odor at room temperature. |
| Flash Point | Not applicable (oxidizer) |
| Boiling Point | Not applicable (decomposes before boiling) |
| Vapor Density | Not applicable (solid oxidizer) |
| Water Reactivity | Soluble in water; solutions may be unstable and release ammonia |
| Extinguishing | Dry chemical, sand; avoid organic materials; water spray for cooling only |
| PPE | ⚠️ Level B minimum; SCBA required; full protective clothing due to oxidizer hazard and potential decomposition |
| Isolation | ERG 140: isolate spill 25-50m; if fire or large spill, isolate 800m all directions, evacuate downwind 1600m |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- These substances will accelerate burning when involved in a fire.
- Some may decompose explosively when heated or involved in a fire.
- May explode from heat or contamination.
- Some will react explosively with hydrocarbons (fuels).
- May ignite combustibles (wood, paper, oil, clothing, etc.).
- Containers may explode when heated.
- Runoff may create fire or explosion hazard.
- Inhalation, ingestion or contact (skin, eyes) with vapors or substance may cause severe injury, burns or
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
- Consider initial downwind evacuation for at least 100 meters (330 feet).
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📋 Copy & Share
UN 1512 — Zinc ammonium nitrite HAZMAT RADIO NOTE — UN 1512
Product: Zinc ammonium nitrite
Class 5 / Oxidizer / ERG 140
PPE: Level B minimum; SCBA required; full protective clothing due to oxidizer hazard and potential decomposition
ISOLATION: ERG 140: isolate spill 25-50m; if fire or large spill, isolate 800m all directions, evacuate downwind 1600m
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 1512 — Zinc ammonium nitrite
Class: 5 | Placard: Oxidizer | ERG Guide: 140
Appearance: White to pale yellow crystalline solid or powder. Odorless or slight ammonia odor at room temperature.
Water Reactivity: Soluble in water; solutions may be unstable and release ammonia
Extinguishing: Dry chemical, sand; avoid organic materials; water spray for cooling only
PPE: Level B minimum; SCBA required; full protective clothing due to oxidizer hazard and potential decomposition
Isolation: ERG 140: isolate spill 25-50m; if fire or large spill, isolate 800m all directions, evacuate downwind 1600m
— Key Hazards —
• These substances will accelerate burning when involved in a fire.
• Some may decompose explosively when heated or involved in a fire.
• May explode from heat or contamination.
— 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/1512 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1512 Zinc ammonium nitrite Cls5 ERG140 | ERG 140: isolate spill 25-50m; if fire or large spill, isolate 800m all directio | allfirefighter.com/hazmat/un/1512SMS / 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/1512
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FAQ
These substances will accelerate burning when involved in a fire. Some may decompose explosively when heated or involved in a fire. May explode from heat or contamination. Some will react explosively with hydrocarbons (fuels). May ignite combustibles (wood, paper, oil, clothing, etc.). Containers may explode when heated. Runoff may create fire or explosion hazard. Inhalation, ingestion or contact (skin, eyes) with vapors or substance may cause severe injury, burns or
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 protective clothing due to oxidizer hazard and potential decomposition
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 140 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.