UN 3092 — Methoxy-propanol
Placard: Flammable. ERG Guide 129. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 3092 is Methoxy-propanol, a flammable glycol ether liquid assigned to ERG Guide 129. Flashback, sewer vapor and water-miscible runoff are key concerns.
Hazard overview: FLAMMABLE glycol ether liquid; vapors may ignite and form explosive mixtures with air. Vapors are heavier than air and may travel to ignition sources and flash back. Vapor explosion hazard exists in drains, sewers, basements and confined areas.
Response guidance: For UN 3092, isolate the area, eliminate ignition sources and keep vapors out of drains. Use SCBA in fire/confined spaces and select foam, dry chemical, CO2 or water spray under ERG 129.
Firefighter training notes: Training for UN 3092 should emphasize product verification, SCBA use, oxidizer/corrosive compatibility, vapor/dust monitoring, decontamination and runoff control. Use ERG 129, SDS and local SOP.
Regulatory context: Methoxy-propanol is regulated as a hazardous material for transport and emergency response. Storage, reporting, exposure, waste and incident-notification duties depend on quantity, formulation, temperature-control status and jurisdiction; verify shipping papers, SDS and authority guidance.
Storage & handling: Methoxy-propanol should be stored in tightly closed compatible containers with ventilation, secondary containment, restricted access and SDS-based segregation from incompatible materials.
UN 3092 Quick Details
Common Hazards of UN 3092
- FLAMMABLE glycol ether liquid; vapors may ignite and form explosive mixtures with air.
- Vapors are heavier than air and may travel to ignition sources and flash back.
- Vapor explosion hazard exists in drains, sewers, basements and confined areas.
- Liquid is miscible with water, so runoff can spread flammable contamination.
- Vapor or mist may irritate eyes and respiratory tract; liquid contact may irritate skin.
- Fire may produce carbon monoxide and irritating organic smoke.
- Containers may rupture or explode when heated.
Chemical Identity & Physical Properties
Clear, colorless liquid with a mild, sweet ether-like odor. Completely miscible with water and most organic solvents.
| Also known as | Propylene glycol methyl etherPGME1-Methoxypropan-2-olDowanol PMMethoxy propanol |
| CAS Number | 107-98-2 |
| Appearance | Clear, colorless liquid with a mild, sweet ether-like odor. Completely miscible with water and most organic solvents. |
| Flash Point | 32°C (90°F) |
| Boiling Point | 120°C (248°F) |
| Vapor Density | 3.1 (heavier than air) |
| Water Reactivity | No significant reaction; completely miscible with water |
Fireground Response Guidance — UN 3092
Extinguishing Media
PPE Requirements
Use positive-pressure SCBA for vapor, mist, fire or confined-space exposure. Wear chemical-resistant gloves, eye/face protection and protective clothing.
Isolation & Evacuation
First Actions for a UN 3092 Incident
- Call 911 and the emergency response number on the shipping paper, if available.
- Keep unauthorized personnel away and establish incident command.
- Stay upwind, uphill and upstream.
- Eliminate ignition sources if this can be done safely.
- Avoid breathing vapor, dust, mist, smoke or fumes and avoid skin or eye contact.
- Do not touch damaged containers or spilled material without proper training and PPE.
- Prevent contaminated liquid, dust, runoff and decontamination waste from spreading.
- Ventilate confined spaces only after monitoring and only if properly trained and equipped.
- Use ERG Guide 129, SDS, shipping papers and monitoring to set isolation, evacuation and entry decisions.
📋 Copy & Share Field Card
UN 3092 — Methoxy-propanolUse 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.