☣️ UN 2440 • CLASS 8
UN 2440 — Stannic chloride, pentahydrate
Placard: Corrosive. ERG Guide 154. 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 2440 Quick Details
UN 2440
Product name: Stannic chloride, pentahydrate
DOT Class: 8
Placard type: Corrosive
ERG Guide: 154 (check current ERG)
Initial isolation: ERG 154: Isolate spill or leak area immediately for at least 50-100 meters in all directions; evacuate area if large spill or fire conditions exist
Common Hazards of UN 2440
- TOXIC and/or CORROSIVE; inhalation, ingestion or skin contact with material may cause severe injury
- 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
- Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive
- Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.).
- Corrosives in contact with metals may evolve flammable hydrogen gas.
Chemical Identity & Physical Properties
| Also known as | Tin(IV) chloride pentahydrateTin tetrachloride pentahydrateStannic chloride 5-hydrateButter of tin pentahydrate |
| CAS Number | 10026-06-9 |
| Appearance | White to slightly yellow crystalline solid or powder with a pungent, acrid odor. Deliquescent and forms dense white fumes in moist air. |
| Flash Point | Not applicable (non-flammable inorganic salt) |
| Boiling Point | Not applicable (decomposes upon heating, releases HCl gas) |
| Vapor Density | Not applicable (solid crystalline material) |
| Water Reactivity | Highly soluble in water, producing heat and acidic solution; forms hydrochloric acid upon contact with moisture |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 2440
Extinguishing Media
Dry chemical, CO2, or dry sand; avoid water streams due to exothermic dissolution and corrosive runoff
PPE Requirements
⚠️ Level B minimum with full face respirator; chemical-resistant suit, boots, and gloves required; SCBA recommended in confined spaces or high concentrations
Isolation & Evacuation
ERG 154: Isolate spill or leak area immediately for at least 50-100 meters in all directions; evacuate area if large spill or fire conditions exist
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 154).
First Actions for a UN 2440 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 2440 — Stannic chloride, pentahydrateHAZMAT RADIO NOTE — UN 2440
Product: Stannic chloride, pentahydrate
Class 8 / Corrosive / ERG 154
PPE: Level B minimum with full face respirator; chemical-resistant suit, boots, and gloves required; SCBA recommended in confined spaces or high concentrations
ISOLATION: ERG 154: Isolate spill or leak area immediately for at least 50-100 meters in all directions; evacuate area if large spill or fire conditions exist
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 2440 — Stannic chloride, pentahydrate
Class: 8 | Placard: Corrosive | ERG Guide: 154
Appearance: White to slightly yellow crystalline solid or powder with a pungent, acrid odor. Deliquescent and forms dense white fumes in moist air.
Water Reactivity: Highly soluble in water, producing heat and acidic solution; forms hydrochloric acid upon contact with moisture
Extinguishing: Dry chemical, CO2, or dry sand; avoid water streams due to exothermic dissolution and corrosive runoff
PPE: Level B minimum with full face respirator; chemical-resistant suit, boots, and gloves required; SCBA recommended in confined spaces or high concentrations
Isolation: ERG 154: Isolate spill or leak area immediately for at least 50-100 meters in all directions; evacuate area if large spill or fire conditions exist
— Key Hazards —
• TOXIC and/or CORROSIVE; inhalation, ingestion or skin contact with material may cause severe injury
• Contact with molten substance may cause severe burns to skin and eyes.
• Avoid any skin contact.
— 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/2440 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN2440 Stannic chloride, pentahydrate Cls8 ERG154 | allfirefighter.com/hazmat/un/2440SMS / 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/2440
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Frequently Asked Questions about UN 2440
TOXIC and/or CORROSIVE; inhalation, ingestion or skin contact with material may cause severe injury 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 Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Corrosives in contact with metals may evolve flammable hydrogen gas.
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 full face respirator; chemical-resistant suit, boots, and gloves required; SCBA recommended in confined spaces or high concentrations
Water reactivity: Highly soluble in water, producing heat and acidic solution; forms hydrochloric acid upon contact with moisture. Recommended extinguishing: Dry chemical, CO2, or dry sand; avoid water streams due to exothermic dissolution and corrosive runoff.
ERG Guide 154 recommendation: ERG 154: Isolate spill or leak area immediately for at least 50-100 meters in all directions; evacuate area if large spill or fire conditions exist
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 154 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.