☣️ UN 1410 • CLASS 4
Lithium aluminum hydride
Placard: Dangerous When Wet. 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 1410
Class: 4
Placard type: Dangerous When Wet
ERG: Guide 138 (check current ERG)
Isolation: ERG 138: isolate spill 25m in all directions. If fire or large spill, isolate 800m and consider evacuation 1600m downwind.
Chemical & Response Details
| Also known as | LAHLithium tetrahydroaluminateLithium alanateLiAlH4 |
| CAS Number | 16853-85-3 |
| Appearance | White to gray crystalline powder or granular solid. Odorless or faint amine-like odor. Decomposes in moist air. |
| Flash Point | Not applicable (pyrophoric solid, ignites spontaneously in moist air) |
| Boiling Point | Not applicable (decomposes at 125C/257F before boiling) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Reacts violently with water, producing flammable hydrogen gas and heat. May ignite spontaneously. |
| Extinguishing | Dry sand, dry chemical, or soda ash. NO WATER, NO FOAM, NO CO2. |
| PPE | ⚠️ Level B minimum in dry conditions; full face SCBA required. Chemical-resistant suit. Work in well-ventilated area away from moisture. |
| Isolation | ERG 138: isolate spill 25m in all directions. If fire or large spill, isolate 800m and consider evacuation 1600m downwind. |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- Produce flammable 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.
- Runoff may create fire or explosion hazard.
- Inhalation or contact with vapors, substance or decomposition products may cause severe injury or
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
- Consider initial downwind evacuation for at least 300 meters (1000 feet).
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UN 1410 — Lithium aluminum hydride HAZMAT RADIO NOTE — UN 1410
Product: Lithium aluminum hydride
Class 4 / Dangerous When Wet / ERG 138
PPE: Level B minimum in dry conditions; full face SCBA required. Chemical-resistant suit. Work in well-ventilated area away from moisture.
ISOLATION: ERG 138: isolate spill 25m in all directions. If fire or large spill, isolate 800m and consider evacuation 1600m 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 1410 — Lithium aluminum hydride
Class: 4 | Placard: Dangerous When Wet | ERG Guide: 138
Appearance: White to gray crystalline powder or granular solid. Odorless or faint amine-like odor. Decomposes in moist air.
Water Reactivity: Reacts violently with water, producing flammable hydrogen gas and heat. May ignite spontaneously.
Extinguishing: Dry sand, dry chemical, or soda ash. NO WATER, NO FOAM, NO CO2.
PPE: Level B minimum in dry conditions; full face SCBA required. Chemical-resistant suit. Work in well-ventilated area away from moisture.
Isolation: ERG 138: isolate spill 25m in all directions. If fire or large spill, isolate 800m and consider evacuation 1600m downwind.
— Key Hazards —
• Produce flammable 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/1410 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1410 Lithium aluminum hydride Cls4 ERG138 | allfirefighter.com/hazmat/un/1410SMS / 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/1410
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FAQ
Produce flammable 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. Runoff may create fire or explosion hazard. Inhalation or contact with vapors, substance or decomposition products may cause severe injury or
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 in dry conditions; full face SCBA required. Chemical-resistant suit. Work in well-ventilated area away from moisture.
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 138 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.