☣️ UN 1602 • CLASS 6
UN 1602 — Dye intermediate, liquid, poisonous, n.o.s.
Placard: Toxic. ERG Guide 151. 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.
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UN 1602 Quick Details
UN 1602
Product name: Dye intermediate, liquid, poisonous, n.o.s.
DOT Class: 6
Placard type: Toxic
ERG Guide: 151 (check current ERG)
Initial isolation: ERG 151: Isolate spill 25-50m all directions; evacuate immediate area; large spill: consider 300m initial downwind evacuation
Common Hazards of UN 1602
- Highly toxic, may be fatal if inhaled, ingested or absorbed through skin.
- 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
- Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive
- Containers may explode when heated.
- Runoff may pollute waterways.
Chemical Identity & Physical Properties
| Also known as | Toxic dye intermediate liquidPoisonous dye intermediateDye precursor liquidIntermediate for dye manufacturing |
| Appearance | Liquid of varying color depending on specific compound, typically clear to dark colored with varying odor. Physical and chemical properties vary widely as this is a n.o.s. (not otherwise specified) classification covering multiple dye intermediates. |
| Flash Point | Varies by specific compound - consult SDS for exact product |
| Boiling Point | Varies by specific compound - consult SDS for exact product |
| Vapor Density | Varies by specific compound - typically heavier than air |
| Water Reactivity | Generally no violent reaction with water, but may dissolve and contaminate water sources |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Fireground Response Guidance — UN 1602
Extinguishing Media
Alcohol-resistant foam, dry chemical, CO2 - effectiveness varies by specific compound
PPE Requirements
⚠️ Level A or B required; full chemical-resistant suit, SCBA mandatory; avoid all skin contact; double gloves recommended
Isolation & Evacuation
ERG 151: Isolate spill 25-50m all directions; evacuate immediate area; large spill: consider 300m initial downwind evacuation
Always confirm protective actions with the current edition of the Emergency Response Guidebook (ERG Guide 151).
First Actions for a UN 1602 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.
- 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 1602 — Dye intermediate, liquid, poisonous, n.oHAZMAT RADIO NOTE — UN 1602
Product: Dye intermediate, liquid, poisonous, n.o.s.
Class 6 / Toxic / ERG 151
PPE: Level A or B required; full chemical-resistant suit, SCBA mandatory; avoid all skin contact; double gloves recommended
ISOLATION: ERG 151: Isolate spill 25-50m all directions; evacuate immediate area; large spill: consider 300m initial downwind evacuation
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 1602 — Dye intermediate, liquid, poisonous, n.o.s.
Class: 6 | Placard: Toxic | ERG Guide: 151
Appearance: Liquid of varying color depending on specific compound, typically clear to dark colored with varying odor. Physical and chemical properties vary widely as this is a n.o.s. (not otherwise specified) classification covering multiple dye intermediates.
Water Reactivity: Generally no violent reaction with water, but may dissolve and contaminate water sources
Extinguishing: Alcohol-resistant foam, dry chemical, CO2 - effectiveness varies by specific compound
PPE: Level A or B required; full chemical-resistant suit, SCBA mandatory; avoid all skin contact; double gloves recommended
Isolation: ERG 151: Isolate spill 25-50m all directions; evacuate immediate area; large spill: consider 300m initial downwind evacuation
— Key Hazards —
• Highly toxic, may be fatal if inhaled, ingested or absorbed through skin.
• Avoid any skin contact.
• Fire may produce irritating, corrosive and/or toxic gases.
— 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/1602 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN1602 Dye intermediate, liquid, poisonous, n.o.s. Cls6 ERG151 | allfirefighter.com/hazmat/un/1602SMS / 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/1602
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Frequently Asked Questions about UN 1602
Highly toxic, may be fatal if inhaled, ingested or absorbed through skin. 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 Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive Containers may explode when heated. Runoff may pollute waterways.
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; full chemical-resistant suit, SCBA mandatory; avoid all skin contact; double gloves recommended
Water reactivity: Generally no violent reaction with water, but may dissolve and contaminate water sources. Recommended extinguishing: Alcohol-resistant foam, dry chemical, CO2 - effectiveness varies by specific compound.
ERG Guide 151 recommendation: ERG 151: Isolate spill 25-50m all directions; evacuate immediate area; large spill: consider 300m initial downwind evacuation
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 151 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.