UN 1086 — Vinyl chloride, stabilized
Placard: Flammable Gas. ERG Guide 116P. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 1086 is Vinyl chloride, stabilized, a flammable liquefied gas assigned to ERG Guide 116P. Flashback, polymerization and toxic HCl fire products are key hazards.
Hazard overview: EXTREMELY FLAMMABLE liquefied gas; vapors can form explosive mixtures with air. Vapors are heavier than air and may travel to ignition sources and flash back. May polymerize if heated, contaminated or if stabilizer is ineffective.
Response guidance: For UN 1086, isolate low areas, eliminate ignition sources and cool containers from protection. Do not extinguish leak flames unless flow can be stopped safely.
Firefighter training notes: Training for UN 1086 should emphasize flammable vapor control, polymerization warning signs, container cooling, SCBA use, decontamination and runoff control. Use ERG 116P, SDS and local SOP.
Regulatory context: Vinyl chloride, stabilized is regulated as a hazardous material for transport and emergency response. Storage, reporting, exposure, waste and incident-notification duties depend on quantity, concentration, package type and jurisdiction; verify shipping papers, SDS and authority guidance.
Storage & handling: Vinyl chloride, stabilized should be stored in approved pressure containers away from heat, ignition sources and contamination, with ventilation, grounding/bonding and polymerization/stabilizer controls.
UN 1086 Quick Details
Common Hazards of UN 1086
- EXTREMELY FLAMMABLE liquefied gas; vapors can form explosive mixtures with air.
- Vapors are heavier than air and may travel to ignition sources and flash back.
- May polymerize if heated, contaminated or if stabilizer is ineffective.
- Inhalation can cause dizziness, narcosis or serious injury; long-term exposure is a cancer concern.
- Cylinders or tanks exposed to fire may vent, rupture or rocket.
- Fire may produce hydrogen chloride, phosgene-type products and toxic smoke.
- Low areas, drains and confined spaces can collect flammable vapor.
Chemical Identity & Physical Properties
Vinyl chloride, stabilized physical appearance should be verified from SDS, package labels and shipping papers.
| Also known as | VCMChloroethyleneMonochloroethylene |
| CAS Number | 75-01-4 |
| Flash Point | -78°C (-108°F) |
| Boiling Point | -13.4°C (8°F) |
| Vapor Density | 2.2 |
Fireground Response Guidance — UN 1086
Extinguishing Media
PPE Requirements
Use positive-pressure SCBA and chemical protective clothing; Level A may be needed for unknown concentration, heavy vapor, splash or skin-absorption risk.
Isolation & Evacuation
First Actions for a UN 1086 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.
- Watch for polymerization, container heating or pressure buildup.
- Avoid breathing vapor, gas, 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, runoff and decontamination waste from spreading.
- Ventilate confined spaces only after monitoring and only if properly trained and equipped.
- Use ERG Guide 116P, SDS, shipping papers and monitoring to set isolation, evacuation and entry decisions.
📋 Copy & Share Field Card
UN 1086 — Vinyl chloride, stabilizedUse 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.