☣️ UN 1176 • CLASS 3
UN 1176 — Ethyl borate
Placard: Flammable. ERG Guide 129. 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
UN 1176 Quick Details
UN 1176
Product name: Ethyl borate
DOT Class: 3
Placard type: Flammable
ERG Guide: 129 (check current ERG)
Initial isolation: ERG 129: isolate spill 50m all directions; for large spill consider initial evacuation 300m downwind
Common Hazards of UN 1176
- HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.
- Vapors may form explosive mixtures with air.
- Vapors may travel to source of ignition and flash back.
- Most vapors are heavier than air. They will spread along the ground and collect in low or confined areas
- Vapor explosion hazard indoors, outdoors or in sewers.
- Those substances designated with a (P) may polymerize explosively when heated or involved in a fire.
- Runoff to sewer may create fire or explosion hazard.
- Containers may explode when heated.
Chemical Identity & Physical Properties
| Also known as | Triethyl borateBoric acid triethyl esterTriethoxyboranEthyl orthoborate |
| CAS Number | 150-46-9 |
| Appearance | Colorless liquid with a mild, characteristic odor. Relatively mobile liquid at room temperature. |
| Flash Point | -12C (10F) |
| Boiling Point | 118C (244F) |
| Vapor Density | 4.0 (heavier than air) |
| Water Reactivity | Hydrolyzes slowly in water producing ethanol and boric acid; reaction is not violent |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 1176
Extinguishing Media
Alcohol-resistant foam, CO2, dry chemical; water spray for cooling only
PPE Requirements
⚠️ Level B minimum; SCBA required in vapor areas; chemical-resistant gloves and suit
Isolation & Evacuation
ERG 129: isolate spill 50m all directions; for large spill consider initial evacuation 300m downwind
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 129).
First Actions for a UN 1176 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 for at least 50 meters (150 feet) in all directions.
- Consider initial downwind evacuation for at least 300 meters (1000 feet).
Advertisement
📋 Copy & Share Field Card
UN 1176 — Ethyl borateHAZMAT RADIO NOTE — UN 1176
Product: Ethyl borate
Class 3 / Flammable / ERG 129
PPE: Level B minimum; SCBA required in vapor areas; chemical-resistant gloves and suit
ISOLATION: ERG 129: isolate spill 50m all directions; for large spill consider initial evacuation 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 1176 — Ethyl borate
Class: 3 | Placard: Flammable | ERG Guide: 129
Appearance: Colorless liquid with a mild, characteristic odor. Relatively mobile liquid at room temperature.
Water Reactivity: Hydrolyzes slowly in water producing ethanol and boric acid; reaction is not violent
Extinguishing: Alcohol-resistant foam, CO2, dry chemical; water spray for cooling only
PPE: Level B minimum; SCBA required in vapor areas; chemical-resistant gloves and suit
Isolation: ERG 129: isolate spill 50m all directions; for large spill consider initial evacuation 300m downwind
— Key Hazards —
• HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.
• Vapors may form explosive mixtures with air.
• Vapors may travel to source of ignition and flash back.
— 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/1176 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1176 Ethyl borate Cls3 ERG129 | ERG 129: isolate spill 50m all directions; for large spill consider initial evac | allfirefighter.com/hazmat/un/1176SMS / 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/1176
Advertisement
Frequently Asked Questions about UN 1176
HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along the ground and collect in low or confined areas Vapor explosion hazard indoors, outdoors or in sewers. Those substances designated with a (P) may polymerize explosively when heated or involved in a fire. Runoff to sewer 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 Keep unauthorized personnel away. Stay upwind, uphill and/or upstream.
Level B minimum; SCBA required in vapor areas; chemical-resistant gloves and suit
Water reactivity: Hydrolyzes slowly in water producing ethanol and boric acid; reaction is not violent. Recommended extinguishing: Alcohol-resistant foam, CO2, dry chemical; water spray for cooling only.
ERG Guide 129 recommendation: ERG 129: isolate spill 50m all directions; for large spill consider initial evacuation 300m downwind
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 129 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.