☣️ UN 1577 • CLASS 6
UN 1577 — Chlorodinitrobenzenes, liquid
Placard: Toxic. ERG Guide 153. 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.
Chlorodinitrobenzenes, liquid is a highly toxic and corrosive substance that requires immediate attention in the event of an emergency. It can cause severe injury through inhalation, ingestion, or skin contact.
Hazard overview: Chlorodinitrobenzenes, liquid is a toxic and corrosive substance that can cause severe injury through inhalation, ingestion, or skin contact. Methyl bromoacetate (UN2643) is an eye irritant/lachrymator.
Response guidance: In the event of an emergency, isolate the spill with a 50m radius and evacuate 500m downwind if a fire is involved. For large spills, consider isolating 100m and evacuating 500m downwind.
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UN 1577 Quick Details
UN 1577
Product name: Chlorodinitrobenzenes, liquid
DOT Class: 6
Placard type: Toxic
ERG Guide: 153 (check current ERG)
Initial isolation: ERG 153: isolate spill 50m all directions; for large spill isolate 100m; evacuate 500m downwind if fire
Common Hazards of UN 1577
- TOXIC and/or CORROSIVE; inhalation, ingestion or skin contact with material may cause severe injury
- Methyl bromoacetate (UN2643) is an eye irritant/lachrymator (causes flow of tears).
- Contact with molten substance may cause severe burns to skin and eyes.
- Avoid any skin contact.
- Fire may produce irritating, corrosive and/or toxic gases.
- Runoff from fire control or dilution water may be corrosive and/or toxic and cause environmental
- Combustible material: may burn but does not ignite readily.
- When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion
Chemical Identity & Physical Properties
Chlorodinitrobenzenes, liquid appears as a yellow to brown oily liquid with a characteristic aromatic odor.
| Also known as | Chloro-dinitrobenzeneCDNBDinitrochlorobenzeneChlorodinitrobenzol |
| Appearance | Yellow to brown oily liquid with a characteristic aromatic odor. Toxic crystalline solid that may be shipped as a molten liquid. |
| Flash Point | 194C (382F) |
| Boiling Point | 315C (599F) |
| Vapor Density | 7.0 (heavier than air) |
| Water Reactivity | Insoluble in water; no significant reaction |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 1577
Extinguishing Media
Alcohol-resistant foam, dry chemical, CO2; water spray for cooling only
PPE Requirements
⚠️ Level A or B minimum; full face SCBA required; chemical-resistant suit and gloves to prevent skin contact
Level A or B minimum PPE is required, including a full face SCBA, chemical-resistant suit, and gloves to prevent skin contact.
Isolation & Evacuation
ERG 153: isolate spill 50m all directions; for large spill isolate 100m; evacuate 500m downwind if fire
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 153).
First Actions for a UN 1577 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 in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters
- 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 1577 — Chlorodinitrobenzenes, liquidHAZMAT RADIO NOTE — UN 1577
Product: Chlorodinitrobenzenes, liquid
Class 6 / Toxic / ERG 153
PPE: Level A or B minimum; full face SCBA required; chemical-resistant suit and gloves to prevent skin contact
ISOLATION: ERG 153: isolate spill 50m all directions; for large spill isolate 100m; evacuate 500m downwind if 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 1577 — Chlorodinitrobenzenes, liquid
Class: 6 | Placard: Toxic | ERG Guide: 153
Appearance: Yellow to brown oily liquid with a characteristic aromatic odor. Toxic crystalline solid that may be shipped as a molten liquid.
Water Reactivity: Insoluble in water; no significant reaction
Extinguishing: Alcohol-resistant foam, dry chemical, CO2; water spray for cooling only
PPE: Level A or B minimum; full face SCBA required; chemical-resistant suit and gloves to prevent skin contact
Isolation: ERG 153: isolate spill 50m all directions; for large spill isolate 100m; evacuate 500m downwind if fire
— Key Hazards —
• TOXIC and/or CORROSIVE; inhalation, ingestion or skin contact with material may cause severe injury
• Methyl bromoacetate (UN2643) is an eye irritant/lachrymator (causes flow of tears).
• Contact with molten substance may cause severe burns to skin and eyes.
— 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 in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters
SOURCE: allfirefighter.com/hazmat/un/chlorodinitrobenzenes-liquid-un-1577 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
UN1577 Chlorodinitrobenzenes, liquid Cls6 ERG153 | allfirefighter.com/hazmat/un/chlorodinitrobenzenes-liquid-un-1577SMS / 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/chlorodinitrobenzenes-liquid-un-1577
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Frequently Asked Questions about UN 1577
Yes, methyl bromoacetate (UN2643) is an eye irritant/lachrymator.
Level A or B minimum PPE, including a full face SCBA, chemical-resistant suit, and gloves to prevent skin contact.
Alcohol-resistant foam, dry chemical, CO2.
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.