☣️ UN 1385 • CLASS 4
Sodium sulphide, with less than 30% water of crystallization
Placard: Spontaneously Combustible. 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 1385
Class: 4
Placard type: Spontaneously Combustible
ERG: Guide 135 (check current ERG)
Isolation: ERG 135: Isolate spill area immediately for at least 100m in all directions. Large spill: consider initial evacuation for 300m downwind.
Chemical & Response Details
| 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. |
| 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. |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- 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.
First actions (field-minded)
- 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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UN 1385 — Sodium sulphide, with less than 30% wate HAZMAT 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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FAQ
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.
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.