☣️ UN 1385 • CLASS 4
UN 1385 — Sodium sulphide, with less than 30% water of crystallization
Placard: Spontaneously Combustible. ERG Guide 135. 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 1385 Quick Details
UN 1385
Product name: Sodium sulphide, with less than 30% water of crystallization
DOT Class: 4
Placard type: Spontaneously Combustible
ERG Guide: 135 (check current ERG)
Initial isolation: ERG 135: Isolate spill area immediately for at least 100m in all directions. Large spill: consider initial evacuation for 300m downwind.
Common Hazards of UN 1385
- Flammable/combustible material.
- May ignite on contact with moist air or moisture.
- May burn rapidly with flare-burning effect.
- Some react vigorously or explosively on contact with water.
- Some may decompose explosively when heated or involved in a fire.
- May re-ignite after fire is extinguished.
- Runoff may create fire or explosion hazard.
- Containers may explode when heated.
Chemical Identity & Physical Properties
| Also known as | Sodium sulfideDisodium sulfideSodium monosulfideNa2S |
| CAS Number | 1313-82-2 |
| Appearance | Yellow to brick-red crystalline solid or fused mass with a characteristic sulfide (rotten egg) odor. Hygroscopic and deliquescent. |
| Flash Point | Not applicable (pyrophoric material) |
| Boiling Point | Not applicable (decomposes above 950C) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Reacts with water releasing heat and hydrogen sulfide gas (toxic, flammable). May ignite spontaneously when wet. |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 1385
Extinguishing Media
Dry chemical, dry sand, soda ash. DO NOT use water or foam.
PPE Requirements
⚠️ Level B minimum with SCBA required. Full chemical protective suit for spills. Protect against hydrogen sulfide exposure.
Isolation & Evacuation
ERG 135: Isolate spill area immediately for at least 100m in all directions. Large spill: consider initial evacuation for 300m downwind.
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 135).
First Actions for a UN 1385 Incident
- CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper
- Stay upwind, uphill and/or upstream.
- Keep unauthorized personnel away.
- 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 1385 — Sodium sulphide, with less than 30% wateHAZMAT RADIO NOTE — UN 1385
Product: Sodium sulphide, with less than 30% water of crystallization
Class 4 / Spontaneously Combustible / ERG 135
PPE: Level B minimum with SCBA required. Full chemical protective suit for spills. Protect against hydrogen sulfide exposure.
ISOLATION: ERG 135: Isolate spill area immediately for at least 100m in all directions. Large spill: consider initial evacuation for 300m 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 1385 — Sodium sulphide, with less than 30% water of crystallization
Class: 4 | Placard: Spontaneously Combustible | ERG Guide: 135
Appearance: Yellow to brick-red crystalline solid or fused mass with a characteristic sulfide (rotten egg) odor. Hygroscopic and deliquescent.
Water Reactivity: Reacts with water releasing heat and hydrogen sulfide gas (toxic, flammable). May ignite spontaneously when wet.
Extinguishing: Dry chemical, dry sand, soda ash. DO NOT use water or foam.
PPE: Level B minimum with SCBA required. Full chemical protective suit for spills. Protect against hydrogen sulfide exposure.
Isolation: ERG 135: Isolate spill area immediately for at least 100m in all directions. Large spill: consider initial evacuation for 300m downwind.
— Key Hazards —
• Flammable/combustible material.
• May ignite on contact with moist air or moisture.
• May burn rapidly with flare-burning effect.
— First Actions —
• CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper
• Stay upwind, uphill and/or upstream.
• Keep unauthorized personnel away.
• Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters
SOURCE: allfirefighter.com/hazmat/un/1385 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1385 Sodium sulphide, with less than 30% water of crystallization Cls4 ERG135 | allfirefighter.com/hazmat/un/1385SMS / 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/1385
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Frequently Asked Questions about UN 1385
Flammable/combustible material. May ignite on contact with moist air or moisture. May burn rapidly with flare-burning effect. Some react vigorously or explosively on contact with water. Some may decompose explosively when heated or involved in a fire. May re-ignite after fire is extinguished. Runoff may create fire or explosion hazard. Containers may explode when heated.
CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper Stay upwind, uphill and/or upstream. Keep unauthorized personnel away.
Level B minimum with SCBA required. Full chemical protective suit for spills. Protect against hydrogen sulfide exposure.
Water reactivity: Reacts with water releasing heat and hydrogen sulfide gas (toxic, flammable). May ignite spontaneously when wet.. Recommended extinguishing: Dry chemical, dry sand, soda ash. DO NOT use water or foam..
ERG Guide 135 recommendation: ERG 135: Isolate spill area immediately for at least 100m in all directions. Large spill: consider initial evacuation for 300m downwind.
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 135 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.