☣️ UN 3459 • CLASS 6
Nitrobromobenzenes, solid
Placard: Toxic. 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.
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Quick details
UN 3459
Class: 6
Placard type: Toxic
ERG: Guide 152 (check current ERG)
Isolation: ERG 152: Initial isolation 50m in all directions. Protective action distance: 0.1 km (330 ft) downwind daytime, 0.2 km (656 ft) nighttime for small spills. Larger spills require greater distances per ERG tables.
Chemical & Response Details
| Also known as | bromonitrobenzenenitrophenyl bromidebromo-nitrobenzene isomersmononitrobromobenzene |
| Appearance | Yellow to pale brown crystalline solid at room temperature. Faint aromatic odor. May appear as powder or crystal form depending on isomer and processing. |
| Flash Point | 127°C (261°F) typical for solid aromatic nitro compounds |
| Boiling Point | Approximately 250-265°C (482-509°F) depending on isomer position |
| Vapor Density | 7.0 (air = 1) - significantly heavier than air when volatilized |
| Water Reactivity | Insoluble in water, no significant violent reaction. Slight hydrolysis possible under extreme conditions. |
| Extinguishing | Dry chemical, CO2, water spray (for cooling containers), alcohol-resistant foam if dissolved in solvents |
| PPE | ⚠️ Level A or B required for spill response. Full-face SCBA mandatory. Impervious chemical-resistant suit, gloves, boots required. Highly toxic via all exposure routes including skin absorption. |
| Isolation | ERG 152: Initial isolation 50m in all directions. Protective action distance: 0.1 km (330 ft) downwind daytime, 0.2 km (656 ft) nighttime for small spills. Larger spills require greater distances per ERG tables. |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- Highly toxic, may be fatal if inhaled, ingested or absorbed through skin.
- 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.
- Containers may explode when heated.
- Those substances designated with a (P) may polymerize explosively when heated or involved in a fire.
First actions (field-minded)
- CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper
- Keep unauthorized personnel away.
- Stay upwind, uphill and/or upstream.
- 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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UN 3459 — Nitrobromobenzenes, solid HAZMAT RADIO NOTE — UN 3459
Product: Nitrobromobenzenes, solid
Class 6 / Toxic / ERG 152
PPE: Level A or B required for spill response. Full-face SCBA mandatory. Impervious chemical-resistant suit, gloves, boots required. Highly toxic via all exposure routes including skin absorption.
ISOLATION: ERG 152: Initial isolation 50m in all directions. Protective action distance: 0.1 km (330 ft) downwind daytime, 0.2 km (656 ft) nighttime for small spills. Larger spills require greater distances per ERG tables.
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 3459 — Nitrobromobenzenes, solid
Class: 6 | Placard: Toxic | ERG Guide: 152
Appearance: Yellow to pale brown crystalline solid at room temperature. Faint aromatic odor. May appear as powder or crystal form depending on isomer and processing.
Water Reactivity: Insoluble in water, no significant violent reaction. Slight hydrolysis possible under extreme conditions.
Extinguishing: Dry chemical, CO2, water spray (for cooling containers), alcohol-resistant foam if dissolved in solvents
PPE: Level A or B required for spill response. Full-face SCBA mandatory. Impervious chemical-resistant suit, gloves, boots required. Highly toxic via all exposure routes including skin absorption.
Isolation: ERG 152: Initial isolation 50m in all directions. Protective action distance: 0.1 km (330 ft) downwind daytime, 0.2 km (656 ft) nighttime for small spills. Larger spills require greater distances per ERG tables.
— Key Hazards —
• Highly toxic, may be fatal if inhaled, ingested or absorbed through skin.
• Contact with molten substance may cause severe burns to skin and eyes.
• Avoid any skin contact.
— 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.
• 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/3459 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN3459 Nitrobromobenzenes, solid Cls6 ERG152 | allfirefighter.com/hazmat/un/3459SMS / 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/3459
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FAQ
Highly toxic, may be fatal if inhaled, ingested or absorbed through skin. 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. Containers may explode when heated. Those substances designated with a (P) may polymerize explosively when heated or involved in a fire.
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 A or B required for spill response. Full-face SCBA mandatory. Impervious chemical-resistant suit, gloves, boots required. Highly toxic via all exposure routes including skin absorption.
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 152 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.