☣️ UN 1517 • CLASS 4
UN 1517 — Zirconium picramate, wetted with not less than 20% water
Placard: Flammable Solid. ERG Guide 113. 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.
Zirconium picramate is a highly reactive substance that requires special handling due to its flammability and explosion hazard. It is typically shipped wetted with at least 20% water to reduce the risk of explosion.
Hazard overview: Zirconium picramate is a highly reactive substance that may be ignited by heat, sparks, or flames. It can also explode if dried.
Response guidance: In the event of a spill, isolate the area immediately and evacuate the surrounding area. For fires, use water spray to keep containers cool and dry chemical or CO2 for small fires.
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UN 1517 Quick Details
UN 1517
Product name: Zirconium picramate, wetted with not less than 20% water
DOT Class: 4
Placard type: Flammable Solid
ERG Guide: 113 (check current ERG)
Initial isolation: ERG 113: isolate spill 25m all directions; if fire or dried material suspected, isolate 800m all directions and evacuate immediate area
Common Hazards of UN 1517
- Flammable/combustible material.
- May be ignited by heat, sparks or flames.
- DRIED OUT material may explode if exposed to heat, flame, friction or shock; treat as an
- Keep material wet with water or treat as an explosive (GUIDE 112).
- Runoff to sewer may create fire or explosion hazard.
- Some are toxic and may be fatal if inhaled, ingested or absorbed through skin. Specifically,
- Contact may cause burns to skin and eyes.
- Fire may produce irritating, corrosive and/or toxic gases.
Chemical Identity & Physical Properties
Zirconium picramate is a yellow to orange crystalline solid with an odorless or slight characteristic odor.
| Also known as | Zirconium picramate wettedPicramate of zirconiumZirconium 2,4,6-trinitrophenolate wetted |
| Appearance | Yellow to orange crystalline solid. Odorless or slight characteristic odor. Shipped wetted with at least 20% water to reduce explosion hazard. |
| Flash Point | Not applicable (wetted explosive solid) |
| Boiling Point | Not applicable (decomposes) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Water is used as desensitizer; maintain minimum 20% water content at all times |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 1517
Extinguishing Media
Water spray to keep containers cool; dry chemical or CO2 for small fires; never allow to dry out
PPE Requirements
⚠️ Level B minimum with SCBA required; full protective clothing; avoid shock, friction, or heat; explosion hazard if dried
Level B minimum with SCBA required; full protective clothing; avoid shock, friction, or heat.
Isolation & Evacuation
ERG 113: isolate spill 25m all directions; if fire or dried material suspected, isolate 800m all directions and evacuate immediate area
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 113).
First Actions for a UN 1517 Incident
- 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 immediately for at least 100 meters (330 feet) in all directions.
- Consider initial evacuation for 500 meters (1/3 mile) in all directions.
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📋 Copy & Share Field Card
UN 1517 — Zirconium picramate, wetted with not lesHAZMAT RADIO NOTE — UN 1517
Product: Zirconium picramate, wetted with not less than 20% water
Class 4 / Flammable Solid / ERG 113
PPE: Level B minimum with SCBA required; full protective clothing; avoid shock, friction, or heat; explosion hazard if dried
ISOLATION: ERG 113: isolate spill 25m all directions; if fire or dried material suspected, isolate 800m all directions and evacuate immediate area
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 1517 — Zirconium picramate, wetted with not less than 20% water
Class: 4 | Placard: Flammable Solid | ERG Guide: 113
Appearance: Yellow to orange crystalline solid. Odorless or slight characteristic odor. Shipped wetted with at least 20% water to reduce explosion hazard.
Water Reactivity: Water is used as desensitizer; maintain minimum 20% water content at all times
Extinguishing: Water spray to keep containers cool; dry chemical or CO2 for small fires; never allow to dry out
PPE: Level B minimum with SCBA required; full protective clothing; avoid shock, friction, or heat; explosion hazard if dried
Isolation: ERG 113: isolate spill 25m all directions; if fire or dried material suspected, isolate 800m all directions and evacuate immediate area
— Key Hazards —
• Flammable/combustible material.
• May be ignited by heat, sparks or flames.
• DRIED OUT material may explode if exposed to heat, flame, friction or shock; treat as an
— First Actions —
• 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 immediately for at least 100 meters (330 feet) in all directions.
SOURCE: allfirefighter.com/hazmat/un/1517 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
UN1517 Zirconium picramate, wetted with not less than 20% water Cls4 ERG113 | allfirefighter.com/hazmat/un/1517SMS / 160 CHAR
Use for: Quick text to command or incoming units. Fits in a single SMS.
⚠️ Quick-reference only. Always use current ERG + SOP/SOG for incident-specific actions.
Page: https://allfirefighter.com/hazmat/un/zirconium-picramate-wetted-with-un-1517
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Frequently Asked Questions about UN 1517
Yes, UN 1517 Zirconium picramate is a flammable solid that may be ignited by heat, sparks, or flames.
UN 1517 Zirconium picramate can explode if dried.
Isolate the spill area immediately and evacuate the surrounding area.
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.