☣️ UN 1279 • CLASS 3
UN 1279 — 1,2-Dichloropropane
Placard: Flammable. ERG Guide 130. 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 1279 Quick Details
UN 1279
Product name: 1,2-Dichloropropane
DOT Class: 3
Placard type: Flammable
ERG Guide: 130 (check current ERG)
Initial isolation: ERG 130: isolate 50m in all directions initially; for large spills isolate 150m and evacuate 800m downwind if needed
Common Hazards of UN 1279
- 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 | Propylene dichlorideDichloropropaneα,β-DichloropropanePDCPropylene chloride |
| CAS Number | 78-87-5 |
| Appearance | Colorless liquid with a chloroform-like or sweet odor. Highly volatile at room temperature with penetrating odor detectable at low concentrations. |
| Flash Point | 16°C (60°F) |
| Boiling Point | 96°C (205°F) |
| Vapor Density | 3.9 (heavier than air) |
| Water Reactivity | No significant reaction with water; insoluble and forms separate layer |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 1279
Extinguishing Media
Alcohol-resistant foam, dry chemical, CO2; water spray for cooling only
PPE Requirements
⚠️ Level B minimum with SCBA required; chemical-resistant gloves and suit for liquid contact; avoid all skin contact
Isolation & Evacuation
ERG 130: isolate 50m in all directions initially; for large spills isolate 150m and evacuate 800m downwind if needed
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 130).
First Actions for a UN 1279 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 1279 — 1,2-DichloropropaneHAZMAT RADIO NOTE — UN 1279
Product: 1,2-Dichloropropane
Class 3 / Flammable / ERG 130
PPE: Level B minimum with SCBA required; chemical-resistant gloves and suit for liquid contact; avoid all skin contact
ISOLATION: ERG 130: isolate 50m in all directions initially; for large spills isolate 150m and evacuate 800m downwind if needed
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 1279 — 1,2-Dichloropropane
Class: 3 | Placard: Flammable | ERG Guide: 130
Appearance: Colorless liquid with a chloroform-like or sweet odor. Highly volatile at room temperature with penetrating odor detectable at low concentrations.
Water Reactivity: No significant reaction with water; insoluble and forms separate layer
Extinguishing: Alcohol-resistant foam, dry chemical, CO2; water spray for cooling only
PPE: Level B minimum with SCBA required; chemical-resistant gloves and suit for liquid contact; avoid all skin contact
Isolation: ERG 130: isolate 50m in all directions initially; for large spills isolate 150m and evacuate 800m downwind if needed
— 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/1279 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1279 1,2-Dichloropropane Cls3 ERG130 | ERG 130: isolate 50m in all directions initially; for large spills isolate 150m | allfirefighter.com/hazmat/un/1279SMS / 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/1279
Advertisement
Frequently Asked Questions about UN 1279
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 with SCBA required; chemical-resistant gloves and suit for liquid contact; avoid all skin contact
Water reactivity: No significant reaction with water; insoluble and forms separate layer. Recommended extinguishing: Alcohol-resistant foam, dry chemical, CO2; water spray for cooling only.
ERG Guide 130 recommendation: ERG 130: isolate 50m in all directions initially; for large spills isolate 150m and evacuate 800m downwind if needed
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 130 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.