UN 1104 — Amyl acetates
Placard: Flammable. ERG Guide 129. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
Amyl acetates are highly flammable liquids that can easily ignite and form explosive mixtures with air, making them a significant fire hazard. It is essential to handle these materials with caution and follow proper safety protocols to minimize the risk of accidents.
Hazard overview: Amyl acetates can be easily ignited by heat, sparks, or flames, and their vapors may form explosive mixtures with air, posing a significant risk of fire or explosion. Prolonged exposure to these substances can also cause health complications, including respiratory problems and skin irritation.
Response guidance: In the event of an amyl acetates spill, it is crucial to isolate the area immediately and evacuate anyone in the surrounding vicinity. Emergency responders should wear Level B protective gear, including a self-contained breathing apparatus and a chemical-resistant suit, to minimize the risk of exposure and explosion.
UN 1104 Quick Details
Common Hazards of UN 1104
- 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
Amyl acetates are clear, colorless liquids with a strong banana-like or pear-like fruity odor, and are volatile flammable liquids at room temperature.
| Also known as | pentyl acetateamyl ethanoatebanana oilpear oiln-amyl acetate |
| CAS Number | 628-63-7 |
| Appearance | Clear, colorless liquid with a strong banana-like or pear-like fruity odor. Volatile flammable liquid at room temperature. |
| Flash Point | 25°C (77°F) |
| Boiling Point | 149°C (300°F) |
| Vapor Density | 4.5 (heavier than air) |
| Water Reactivity | No significant reaction; insoluble in water, floats on surface |
Fireground Response Guidance — UN 1104
Extinguishing Media
PPE Requirements
When handling amyl acetates, it is recommended to wear Level B minimum protective gear, including a self-contained breathing apparatus and a chemical-resistant suit, to prevent skin contact and minimize the risk of explosion.
Isolation & Evacuation
First Actions for a UN 1104 Incident
- 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).
📋 Copy & Share Field Card
UN 1104 — Amyl acetatesUse for: Quick radio or face-to-face size-up. Short, structured, field-ready.
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
Use for: Quick text to command or incoming units. Fits in a single SMS.