☣️ UN 1847 • CLASS 8
Potassium sulphide, hydrated, with not less than 30% water of crystallization
Placard: Corrosive. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
🚒☣️
⚠️ 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.
Advertisement
Quick details
UN 1847
Class: 8
Placard type: Corrosive
ERG: Guide 153 (check current ERG)
Isolation: ERG 153: isolate spill/leak area 25-50m all directions; if tank/rail car involved in fire, isolate 800m all directions and consider initial evacuation 800m
Chemical & Response Details
| Also known as | Potassium sulfide hydrateDipotassium sulfide hydratePotassium sulphide crystalsLiver of sulfur |
| CAS Number | 1312-73-8 |
| Appearance | Yellow to reddish-brown crystalline solid with a characteristic rotten egg (hydrogen sulfide) odor. Hygroscopic and deliquescent at room temperature. |
| Flash Point | Not applicable (inorganic salt) |
| Boiling Point | Not applicable (decomposes before boiling) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Dissolves readily in water generating heat and forming alkaline solution; may release hydrogen sulfide gas |
| Extinguishing | Dry chemical, soda ash, lime; avoid direct water application due to heat generation and H2S release |
| PPE | ⚠️ Level B minimum; SCBA required due to H2S evolution risk; chemical-resistant gloves and suit; face shield and eye protection mandatory |
| Isolation | ERG 153: isolate spill/leak area 25-50m all directions; if tank/rail car involved in fire, isolate 800m all directions and consider initial evacuation 800m |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- TOXIC and/or CORROSIVE; inhalation, ingestion or skin contact with material may cause severe injury
- Methyl bromoacetate (UN2643) is an eye irritant/lachrymator (causes flow of tears).
- Contact with molten substance may cause severe burns to skin and eyes.
- Avoid any skin contact.
- Fire may produce irritating, corrosive and/or toxic gases.
- Runoff from fire control or dilution water may be corrosive and/or toxic and cause environmental
- Combustible material: may burn but does not ignite readily.
- When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion
First actions (field-minded)
- 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
Advertisement
📋 Copy & Share
UN 1847 — Potassium sulphide, hydrated, with not l HAZMAT RADIO NOTE — UN 1847
Product: Potassium sulphide, hydrated, with not less than 30% water of crystallization
Class 8 / Corrosive / ERG 153
PPE: Level B minimum; SCBA required due to H2S evolution risk; chemical-resistant gloves and suit; face shield and eye protection mandatory
ISOLATION: ERG 153: isolate spill/leak area 25-50m all directions; if tank/rail car involved in fire, isolate 800m all directions and consider initial evacuation 800m
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 1847 — Potassium sulphide, hydrated, with not less than 30% water of crystallization
Class: 8 | Placard: Corrosive | ERG Guide: 153
Appearance: Yellow to reddish-brown crystalline solid with a characteristic rotten egg (hydrogen sulfide) odor. Hygroscopic and deliquescent at room temperature.
Water Reactivity: Dissolves readily in water generating heat and forming alkaline solution; may release hydrogen sulfide gas
Extinguishing: Dry chemical, soda ash, lime; avoid direct water application due to heat generation and H2S release
PPE: Level B minimum; SCBA required due to H2S evolution risk; chemical-resistant gloves and suit; face shield and eye protection mandatory
Isolation: ERG 153: isolate spill/leak area 25-50m all directions; if tank/rail car involved in fire, isolate 800m all directions and consider initial evacuation 800m
— Key Hazards —
• TOXIC and/or CORROSIVE; inhalation, ingestion or skin contact with material may cause severe injury
• Methyl bromoacetate (UN2643) is an eye irritant/lachrymator (causes flow of tears).
• Contact with molten substance may cause severe burns to skin and eyes.
— 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/1847 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1847 Potassium sulphide, hydrated, with not less than 30% water of crystallization Cls8 ERG153 | allfirefighter.com/hazmat/un/1847SMS / 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/1847
Advertisement
FAQ
TOXIC and/or CORROSIVE; inhalation, ingestion or skin contact with material may cause severe injury Methyl bromoacetate (UN2643) is an eye irritant/lachrymator (causes flow of tears). Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause environmental Combustible material: may burn but does not ignite readily. When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion
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; SCBA required due to H2S evolution risk; chemical-resistant gloves and suit; face shield and eye protection mandatory
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 153 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.