☣️ UN 2192 • CLASS 2
Germane
Placard: Toxic Gas. 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.
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Quick details
UN 2192
Class: 2
Placard type: Toxic Gas
ERG: Guide 119 (check current ERG)
Isolation: ERG 119: isolate 100m all directions; evacuate 800m downwind if tank/rail car involved in fire
Chemical & Response Details
| Also known as | Germanium tetrahydrideGermanium hydrideMonogermaneGeH4 |
| CAS Number | 7782-65-2 |
| Appearance | Colorless gas with a garlic-like odor. Shipped as a liquefied compressed gas. |
| Flash Point | Not applicable (flammable gas, autoignites at 280C/536F) |
| Boiling Point | -88C (-126F) |
| Vapor Density | 2.6 (heavier than air) |
| Water Reactivity | Reacts slowly with water producing germanium dioxide and hydrogen gas |
| Extinguishing | Do not use water or foam. Use dry chemical, CO2, or allow fire to burn out |
| PPE | ⚠️ Level A required for spills/leaks; full-face SCBA, gas-tight chemical protective suit; extreme inhalation and skin contact hazard |
| Isolation | ERG 119: isolate 100m all directions; evacuate 800m downwind if tank/rail car involved in fire |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- TOXIC; may be fatal if inhaled or absorbed through skin. Some may cause severe skin burns and
- Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite.
- Fire will produce irritating, corrosive and/or toxic gases.
- Runoff from fire control or dilution water may cause environmental contamination.
- Flammable; may be ignited by heat, sparks or flames.
- May form explosive mixtures with air. Ethylene oxide (UN1040) may react explosively even in the
- Those substances designated with a (P) may polymerize explosively when heated or involved in a fire.
- Vapors from liquefied gas are initially heavier than air and spread along ground.
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.
- Many gases are heavier than air and will spread along the ground and collect in low or confined areas
- Ventilate closed spaces before entering, but only if properly trained and equipped.
- Isolate spill or leak area for at least 100 meters (330 feet) in all directions.
- 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 2192 — Germane HAZMAT RADIO NOTE — UN 2192
Product: Germane
Class 2 / Toxic Gas / ERG 119
PPE: Level A required for spills/leaks; full-face SCBA, gas-tight chemical protective suit; extreme inhalation and skin contact hazard
ISOLATION: ERG 119: isolate 100m all directions; evacuate 800m downwind if tank/rail car involved in fire
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 2192 — Germane
Class: 2 | Placard: Toxic Gas | ERG Guide: 119
Appearance: Colorless gas with a garlic-like odor. Shipped as a liquefied compressed gas.
Water Reactivity: Reacts slowly with water producing germanium dioxide and hydrogen gas
Extinguishing: Do not use water or foam. Use dry chemical, CO2, or allow fire to burn out
PPE: Level A required for spills/leaks; full-face SCBA, gas-tight chemical protective suit; extreme inhalation and skin contact hazard
Isolation: ERG 119: isolate 100m all directions; evacuate 800m downwind if tank/rail car involved in fire
— Key Hazards —
• TOXIC; may be fatal if inhaled or absorbed through skin. Some may cause severe skin burns and
• Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite.
• Fire will produce irritating, corrosive and/or toxic gases.
— 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.
• Many gases are heavier than air and will spread along the ground and collect in low or confined areas
SOURCE: allfirefighter.com/hazmat/un/2192 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN2192 Germane Cls2 ERG119 | ERG 119: isolate 100m all directions; evacuate 800m downwind if tank/rail car in | allfirefighter.com/hazmat/un/2192SMS / 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/2192
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FAQ
TOXIC; may be fatal if inhaled or absorbed through skin. Some may cause severe skin burns and Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may cause environmental contamination. Flammable; may be ignited by heat, sparks or flames. May form explosive mixtures with air. Ethylene oxide (UN1040) may react explosively even in the Those substances designated with a (P) may polymerize explosively when heated or involved in a fire. Vapors from liquefied gas are initially heavier than air and spread along ground.
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 A required for spills/leaks; full-face SCBA, gas-tight chemical protective suit; extreme inhalation and skin contact hazard
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 119 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.