☣️ UN 2013 • CLASS 4
UN 2013 — Strontium phosphide
Placard: Dangerous When Wet. ERG Guide 139. 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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UN 2013 Quick Details
UN 2013
Product name: Strontium phosphide
DOT Class: 4
Placard type: Dangerous When Wet
ERG Guide: 139 (check current ERG)
Initial isolation: ERG 139: Initial isolation 100m all directions. Protect from water and moisture. If fire involved, evacuate 800m downwind.
Common Hazards of UN 2013
- Produce flammable and toxic gases on contact with water.
- May ignite on contact with water or moist air.
- Some react vigorously or explosively on contact with water.
- May be ignited by heat, sparks or flames.
- May re-ignite after fire is extinguished.
- Some are transported in highly flammable liquids.
- Containers may explode when heated.
- Runoff may create fire or explosion hazard.
Chemical Identity & Physical Properties
| Also known as | Strontium phosphidePhosphorus strontium compoundSr3P2Tristrontium diphosphide |
| CAS Number | 12504-13-1 |
| Appearance | Gray to dark gray crystalline solid or powder with no distinct odor when dry. Highly reactive with moisture. |
| Flash Point | Not applicable (water-reactive solid) |
| Boiling Point | Not applicable (decomposes) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Reacts violently with water producing flammable phosphine gas (PH3) and toxic fumes. Do not use water. |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 2013
Extinguishing Media
Dry sand, dry chemical, dry graphite powder. No water or water-based agents.
PPE Requirements
⚠️ Level B minimum with SCBA required. Full face respirator, chemical-resistant suit, gloves. Avoid moisture exposure.
Isolation & Evacuation
ERG 139: Initial isolation 100m all directions. Protect from water and moisture. If fire involved, evacuate 800m downwind.
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 139).
First Actions for a UN 2013 Incident
- 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
- 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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📋 Copy & Share Field Card
UN 2013 — Strontium phosphideHAZMAT RADIO NOTE — UN 2013
Product: Strontium phosphide
Class 4 / Dangerous When Wet / ERG 139
PPE: Level B minimum with SCBA required. Full face respirator, chemical-resistant suit, gloves. Avoid moisture exposure.
ISOLATION: ERG 139: Initial isolation 100m all directions. Protect from water and moisture. If fire involved, evacuate 800m downwind.
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 2013 — Strontium phosphide
Class: 4 | Placard: Dangerous When Wet | ERG Guide: 139
Appearance: Gray to dark gray crystalline solid or powder with no distinct odor when dry. Highly reactive with moisture.
Water Reactivity: Reacts violently with water producing flammable phosphine gas (PH3) and toxic fumes. Do not use water.
Extinguishing: Dry sand, dry chemical, dry graphite powder. No water or water-based agents.
PPE: Level B minimum with SCBA required. Full face respirator, chemical-resistant suit, gloves. Avoid moisture exposure.
Isolation: ERG 139: Initial isolation 100m all directions. Protect from water and moisture. If fire involved, evacuate 800m downwind.
— Key Hazards —
• Produce flammable and toxic gases on contact with water.
• May ignite on contact with water or moist air.
• Some react vigorously or explosively on contact with water.
— 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/2013 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN2013 Strontium phosphide Cls4 ERG139 | ERG 139: Initial isolation 100m all directions. Protect from water and moisture. | allfirefighter.com/hazmat/un/2013SMS / 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/2013
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Frequently Asked Questions about UN 2013
Produce flammable and toxic gases on contact with water. May ignite on contact with water or moist air. Some react vigorously or explosively on contact with water. May be ignited by heat, sparks or flames. May re-ignite after fire is extinguished. Some are transported in highly flammable liquids. Containers may explode when heated. Runoff may create fire or explosion hazard.
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 SCBA required. Full face respirator, chemical-resistant suit, gloves. Avoid moisture exposure.
Water reactivity: Reacts violently with water producing flammable phosphine gas (PH3) and toxic fumes. Do not use water.. Recommended extinguishing: Dry sand, dry chemical, dry graphite powder. No water or water-based agents..
ERG Guide 139 recommendation: ERG 139: Initial isolation 100m all directions. Protect from water and moisture. If fire involved, evacuate 800m downwind.
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 139 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.