☣️ UN 1517 • CLASS 4.1

UN 1517 — Zirconium picramate, wetted with not less than 20% water, by mass

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.

UN 1517 At a Glance

UN 1517 (Zirconium picramate, wetted with not less than 20% water, by mass) is listed as DOT Class 4.1 Flammable Solid and is assigned to ERG Guide 113. Use this page to review placard data, common hazards, PPE notes, isolation context, first actions, and related UN numbers.

UN 1517 is Zirconium picramate, wetted with not less than 20% water by mass. It is a Division 4.1 flammable solid assigned to Packing Group I and ERG Guide 113. The specified water content is an important part of the transport condition, and loss of that wetting condition can significantly increase the hazard.

Hazard overview: UN 1517 is transported in a wetted condition to control the sensitivity of the energetic material. It remains a Division 4.1 flammable solid and can burn when exposed to sufficient heat or ignition. Loss of the required water content, severe heating, fire, friction or impact can create a much more serious energetic-material hazard. Responders should avoid unnecessary handling and determine whether the shipment remains properly wetted before taking close-action measures.

Response guidance: For a UN 1517 incident, establish incident command, identify the shipment, determine the condition of the packaging and assess whether the required wetting condition has been maintained. Keep personnel away from damaged or leaking packages and avoid friction, impact and mechanical disturbance of the material. If dry-out, fire or significant heating is suspected, increase protective distance and request HazMat and appropriate energetic-material specialists. Use the current ERG Guide 113, SDS and local SOP/SOG for incident-specific response decisions.

Firefighter training notes: Training for UN 1517 should emphasize the importance of the required wetting condition, recognition of leakage or dry-out, avoidance of friction and impact, proper isolation and early HazMat or specialist notification. Responders should distinguish the normal wetted transport condition from a damaged or dried condition and use the current ERG 113, SDS and local SOP/SOG.

Regulatory context: Zirconium picramate, wetted with not less than 20% water by mass is regulated as a Division 4.1 flammable solid, Packing Group I, for transportation under applicable U.S. hazardous-materials requirements. Current references identify Special Provisions 23, N41 and W31. Transportation, storage, workplace exposure, spill reporting, waste handling and emergency-response requirements may vary by jurisdiction and quantity. Verify current DOT, OSHA, EPA, NFPA, state and local requirements as applicable.

Storage & handling: UN 1517 should remain in approved packaging and under the required wetted condition specified by the applicable transportation and storage requirements. Protect the material from excessive heat, ignition sources, impact, friction, unauthorized access and conditions that could cause loss of the required diluent. Damaged, leaking or potentially dried material should be isolated and evaluated by qualified HazMat or energetic-material specialists.

UN 1517 Quick Details

UN 1517

Product name: Zirconium picramate, wetted with not less than 20% water, by mass

DOT Class: 4.1

Placard type: Flammable Solid

ERG Guide: 113 (check current ERG)

Initial isolation: Use the current ERG Guide 113 for initial isolation and protective-action guidance. Do not treat a fixed distance as a universal operating perimeter. The appropriate protective distance depends on quantity, packaging, fire involvement, wetting condition, surrounding materials and incident conditions.

Common Hazards of UN 1517

UN 1517 is a wetted energetic material transported with not less than 20% water by mass to reduce its sensitivity.
Loss of the required water content can increase the sensitivity of the material and may change the hazard significantly.
The material is classified as a Division 4.1 flammable solid and may burn when exposed to sufficient heat or ignition.
Heat, fire, friction, impact or other severe conditions may create a serious energetic-material hazard, particularly if the material has dried or the required wetting condition is not maintained.
Fire may produce hazardous smoke and thermal decomposition products.
Damaged, leaking or improperly wetted packages should not be handled unnecessarily.
The exact toxicological and decomposition hazards depend on the material and incident conditions; responders should consult the current SDS when available.
The presence of dry or partially dried material can represent a substantially more serious hazard than properly wetted material.

Chemical Identity & Physical Properties

Zirconium picramate is transported under UN 1517 in a wetted condition containing not less than 20% water by mass. The material is a solid energetic compound, while its exact physical appearance and packaging can vary. Product-specific appearance and composition should be verified from manufacturer and shipping documentation.

Also known as	Zirconium picramate, wettedWetted zirconium picramateZirconium picramate wet with at least 20% water
Appearance	A solid energetic material transported in a wetted condition with not less than 20% water by mass. The physical appearance, particle form, packaging and exact formulation may vary by manufacturer and shipment. Product-specific physical characteristics should be confirmed from the manufacturer's documentation.
Flash Point	Not reliably applicable to the wetted energetic solid as an assembled transport material; ignition behavior depends on formulation, water content and incident conditions.
Boiling Point	Not applicable to the solid material as a whole; the water and other components may have different physical properties.
Vapor Density	Not applicable to the intact solid material. Hazardous vapors or decomposition products may be generated during heating or fire.
Water Reactivity	Water is used as a diluent or wetting agent for this transport entry. The required water content must be maintained as specified by the applicable transportation requirements. Do not assume that adding water to spilled or damaged material is an appropriate field action without confirming current ERG, SDS and specialist guidance.

Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.

Fireground Response Guidance — UN 1517

Extinguishing Media

Extinguishing-agent selection should be based on the current ERG Guide 113, SDS, surrounding fire conditions and incident command. Do not approach or disturb heated, damaged or potentially dried energetic material unnecessarily.

PPE Requirements

⚠️ PPE should be selected according to the actual fire, dust, exposure and material conditions. Positive-pressure SCBA may be appropriate when responders are exposed to smoke or hazardous airborne products. Chemical-protective clothing and gloves should be selected using the product SDS and incident-specific hazard assessment. PPE does not eliminate the energetic-material hazard created by dry-out, heat, friction or impact.

PPE should be selected from the actual incident hazard assessment, current SDS and department SOP/SOG. Positive-pressure SCBA may be required for smoke or hazardous airborne products. Appropriate gloves and chemical-protective clothing should be selected based on the product-specific exposure hazard. Standoff distance and avoidance of friction, impact and dry-out are critical controls and cannot be replaced by PPE.

Isolation & Evacuation

Use the current ERG Guide 113 for initial isolation and protective-action guidance. Do not treat a fixed distance as a universal operating perimeter. The appropriate protective distance depends on quantity, packaging, fire involvement, wetting condition, surrounding materials and incident conditions.

Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 113).

First Actions for a UN 1517 Incident

Establish incident command and identify the shipment from shipping papers, package markings and available product documentation.
Keep unauthorized personnel away from the incident area.
Stay upwind and uphill when practical and avoid unnecessary exposure to smoke or dust.
Avoid friction, impact, shock and unnecessary movement of packages or spilled material.
Determine whether the required wetting condition has been maintained and whether any material has dried or leaked from the package.
Do not open, scrape, sweep, crush or otherwise mechanically disturb spilled or dried material.
If fire, significant heating, damaged packaging or suspected dry-out is present, increase the protective distance and request HazMat and appropriate explosive-material specialists.
Use the current ERG Guide 113 together with shipping papers, SDS, product documentation and local SOP/SOG for incident-specific protective actions.
Do not assume that water application or other spill-control measures are appropriate for every condition; follow the current ERG, SDS and incident command direction.

📋 Copy & Share Field Card

UN 1517 — Zirconium picramate, wetted with not les

HAZMAT RADIO NOTE — UN 1517 Product: Zirconium picramate, wetted with not less than 20% water, by mass Class 4.1 / Flammable Solid / ERG 113 PPE: PPE should be selected according to the actual fire, dust, exposure and material conditions. Positive-pressure SCBA may be appropriate when responders are exposed to smoke or hazardous airborne products. Chemical-protective clothing and gloves should be selected using the product SDS and incident-specific hazard assessment. PPE does not eliminate the energetic-material hazard created by dry-out, heat, friction or impact. ISOLATION: Use the current ERG Guide 113 for initial isolation and protective-action guidance. Do not treat a fixed distance as a universal operating perimeter. The appropriate protective distance depends on quantity, packaging, fire involvement, wetting condition, surrounding materials and incident conditions. 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, by mass Class: 4.1 | Placard: Flammable Solid | ERG Guide: 113 Appearance: A solid energetic material transported in a wetted condition with not less than 20% water by mass. The physical appearance, particle form, packaging and exact formulation may vary by manufacturer and shipment. Product-specific physical characteristics should be confirmed from the manufacturer's documentation. Water Reactivity: Water is used as a diluent or wetting agent for this transport entry. The required water content must be maintained as specified by the applicable transportation requirements. Do not assume that adding water to spilled or damaged material is an appropriate field action without confirming current ERG, SDS and specialist guidance. Extinguishing: Extinguishing-agent selection should be based on the current ERG Guide 113, SDS, surrounding fire conditions and incident command. Do not approach or disturb heated, damaged or potentially dried energetic material unnecessarily. PPE: PPE should be selected according to the actual fire, dust, exposure and material conditions. Positive-pressure SCBA may be appropriate when responders are exposed to smoke or hazardous airborne products. Chemical-protective clothing and gloves should be selected using the product SDS and incident-specific hazard assessment. PPE does not eliminate the energetic-material hazard created by dry-out, heat, friction or impact. Isolation: Use the current ERG Guide 113 for initial isolation and protective-action guidance. Do not treat a fixed distance as a universal operating perimeter. The appropriate protective distance depends on quantity, packaging, fire involvement, wetting condition, surrounding materials and incident conditions. — Key Hazards — • UN 1517 is a wetted energetic material transported with not less than 20% water by mass to reduce its sensitivity. • Loss of the required water content can increase the sensitivity of the material and may change the hazard significantly. • The material is classified as a Division 4.1 flammable solid and may burn when exposed to sufficient heat or ignition. — First Actions — • Establish incident command and identify the shipment from shipping papers, package markings and available product documentation. • Keep unauthorized personnel away from the incident area. • Stay upwind and uphill when practical and avoid unnecessary exposure to smoke or dust. • Avoid friction, impact, shock and unnecessary movement of packages or spilled material. SOURCE: allfirefighter.com/hazmat/un/zirconium-picramate-wetted-with-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, by mass Cls4.1 ERG113 | allfirefighter.com/hazmat/un/zirconium-picramate-wetted-with-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

Frequently Asked Questions about UN 1517

UN 1517 is Zirconium picramate, wetted with not less than 20% water by mass. It is classified as a Division 4.1 flammable solid and assigned to Packing Group I.

UN 1517 is assigned to ERG Guide 113. Responders should use the current ERG together with shipping papers, the product SDS and local emergency-response procedures.

The material is transported in a wetted condition to maintain the specified diluent content and reduce the sensitivity of the energetic material. The applicable transportation requirements specify the required wetting condition.

UN 1517 is classified as Division 4.1, Flammable Solids, and has Packing Group I under the applicable U.S. hazardous-materials classification.

Loss of the required wetting condition can increase the sensitivity and severity of the hazard. Dry or partially dried material should not be mechanically disturbed and should be treated as a serious escalation requiring specialist assessment.

UN 1517 is transported under Division 4.1 rather than as a Division 1 explosive entry. However, it is an energetic material and loss of the required wetting condition, severe heating, fire or mechanical disturbance can create a significantly more hazardous condition.

The primary concerns are flammability, loss of the required wetting condition, increased sensitivity if the material dries, fire exposure and hazardous decomposition products.

Avoid unnecessary handling or mechanical disturbance. Establish incident command, isolate the area, determine whether the required wetting condition has been compromised, and consult the current ERG, SDS and HazMat or specialist personnel before taking close-action measures.

PPE depends on the actual incident conditions. SCBA may be appropriate for smoke or hazardous airborne products, while gloves and chemical-protective clothing should be selected using the product SDS and hazard assessment. PPE does not eliminate the energetic-material hazard.

Current U.S. transportation references list Special Provisions 23, N41 and W31 for UN 1517. These provisions address the required diluent condition, packaging construction and sealing requirements. Verify the current regulations before relying on these requirements operationally.

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.