☣️ UN 1604 • CLASS 8
UN 1604 — Ethylenediamine
Placard: Corrosive. ERG Guide 132. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
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⚠️ 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.
UN 1604 is a flammable and corrosive liquid that requires special handling and equipment. It is a hygroscopic substance that can cause severe health effects.
Hazard overview: UN 1604 is flammable and corrosive, and can cause severe health effects and explosions. It is a hygroscopic substance that can cause severe eye and skin burns.
Response guidance: In case of emergency, evacuate the area immediately and call the fire department. Use Level B PPE and avoid any skin contact with the substance.
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UN 1604 Quick Details
UN 1604
Product name: Ethylenediamine
DOT Class: 8
Placard type: Corrosive
ERG Guide: 132 (check current ERG)
Initial isolation: ERG 132: isolate spill 50m all directions; evacuate 800m downwind if large spill or fire
Common Hazards of UN 1604
- Flammable/combustible material.
- May be 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.
Chemical Identity & Physical Properties
UN 1604 is a colorless to yellowish liquid with a strong ammonia-like odor.
| Also known as | 1,2-DiaminoethaneEDA1,2-EthanediamineEdamine |
| CAS Number | 107-15-3 |
| Appearance | Colorless to yellowish liquid with a strong ammonia-like odor. Hygroscopic and miscible with water. |
| Flash Point | 34°C (93°F) |
| Boiling Point | 117°C (243°F) |
| Vapor Density | 2.07 (heavier than air) |
| Water Reactivity | Miscible with water; generates heat when mixed but no violent reaction |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 1604
Extinguishing Media
Alcohol-resistant foam, CO2, dry chemical; water spray for cooling
PPE Requirements
⚠️ Level B minimum; SCBA required; chemical-resistant gloves and suit due to corrosive vapors
Level B PPE is required, including SCBA and chemical-resistant gloves and suit.
Isolation & Evacuation
ERG 132: isolate spill 50m all directions; evacuate 800m downwind if large spill or fire
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 132).
First Actions for a UN 1604 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.
- For highlighted materials: see Table 1 - Initial Isolation and Protective Action Distances.
- For non-highlighted materials: increase the immediate precautionary measure distance, in the downwind
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📋 Copy & Share Field Card
UN 1604 — EthylenediamineHAZMAT RADIO NOTE — UN 1604
Product: Ethylenediamine
Class 8 / Corrosive / ERG 132
PPE: Level B minimum; SCBA required; chemical-resistant gloves and suit due to corrosive vapors
ISOLATION: ERG 132: isolate spill 50m all directions; evacuate 800m downwind if large spill or fire
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 1604 — Ethylenediamine
Class: 8 | Placard: Corrosive | ERG Guide: 132
Appearance: Colorless to yellowish liquid with a strong ammonia-like odor. Hygroscopic and miscible with water.
Water Reactivity: Miscible with water; generates heat when mixed but no violent reaction
Extinguishing: Alcohol-resistant foam, CO2, dry chemical; water spray for cooling
PPE: Level B minimum; SCBA required; chemical-resistant gloves and suit due to corrosive vapors
Isolation: ERG 132: isolate spill 50m all directions; evacuate 800m downwind if large spill or fire
— Key Hazards —
• Flammable/combustible material.
• May be ignited by heat, sparks or flames.
• Vapors may form explosive mixtures with air.
— First Actions —
• 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.
SOURCE: allfirefighter.com/hazmat/un/1604 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
UN1604 Ethylenediamine Cls8 ERG132 | ERG 132: isolate spill 50m all directions; evacuate 800m downwind if large spill | allfirefighter.com/hazmat/un/1604SMS / 160 CHAR
Use for: Quick text to command or incoming units. Fits in a single SMS.
⚠️ Quick-reference only. Always use current ERG + SOP/SOG for incident-specific actions.
Page: https://allfirefighter.com/hazmat/un/ethylenediamine-un-1604
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Frequently Asked Questions about UN 1604
Yes
Yes
Level B PPE, including SCBA and chemical-resistant gloves and suit
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.