☣️ UN 3535 • CLASS 6
Toxic solid, flammable, inorganic, n.o.s.
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.
Advertisement
Quick details
UN 3535
Class: 6
Placard type: Toxic
ERG: Guide 134 (check current ERG)
Isolation: ERG 134: isolate spill 25m all directions; if large spill isolate 50m; evacuate immediate area if fire or major spill
Chemical & Response Details
| Also known as | Toxic solid, flammable, inorganic, n.o.s.Poisonous solid, flammable, inorganic, not otherwise specifiedFlammable toxic inorganic solid |
| Appearance | Variable appearance depending on specific substance; typically a solid material at room temperature that is both toxic and flammable. May range from crystalline powders to granular solids with varying colors and odors. |
| Flash Point | Variable - flammable solid, ignition temperature depends on specific material |
| Boiling Point | Variable - depends on specific inorganic compound |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Variable - may range from no reaction to violent reaction depending on specific substance |
| Extinguishing | Dry chemical, CO2, sand; avoid water unless reactivity is known |
| PPE | ⚠️ Level A or B required; SCBA mandatory; full chemical-resistant suit; avoid skin contact due to toxicity |
| Isolation | ERG 134: isolate spill 25m all directions; if large spill isolate 50m; evacuate immediate area if fire or major spill |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- Flammable/combustible material.
- May be ignited by heat, sparks or flames.
- When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion
- Corrosives in contact with metals may evolve flammable hydrogen gas.
- Containers may explode when heated.
- TOXIC and/or CORROSIVE; inhalation, ingestion or skin contact with material may cause severe
- Fire will produce irritating, corrosive and/or toxic gases.
- Runoff from fire control or dilution water may be corrosive and/or toxic and cause environmental
First actions (field-minded)
- CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper
- Stay upwind, uphill and/or upstream.
- Keep unauthorized personnel away.
- Ventilate closed spaces before entering, but only if properly trained and equipped.
- Isolate spill or leak area for at least 25 meters (75 feet) in all directions.
- Consider initial downwind evacuation for at least 100 meters (330 feet).
Advertisement
📋 Copy & Share
UN 3535 — Toxic solid, flammable, inorganic, n.o.s HAZMAT RADIO NOTE — UN 3535
Product: Toxic solid, flammable, inorganic, n.o.s.
Class 6 / Toxic / ERG 134
PPE: Level A or B required; SCBA mandatory; full chemical-resistant suit; avoid skin contact due to toxicity
ISOLATION: ERG 134: isolate spill 25m all directions; if large spill isolate 50m; evacuate immediate area if fire or major spill
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 3535 — Toxic solid, flammable, inorganic, n.o.s.
Class: 6 | Placard: Toxic | ERG Guide: 134
Appearance: Variable appearance depending on specific substance; typically a solid material at room temperature that is both toxic and flammable. May range from crystalline powders to granular solids with varying colors and odors.
Water Reactivity: Variable - may range from no reaction to violent reaction depending on specific substance
Extinguishing: Dry chemical, CO2, sand; avoid water unless reactivity is known
PPE: Level A or B required; SCBA mandatory; full chemical-resistant suit; avoid skin contact due to toxicity
Isolation: ERG 134: isolate spill 25m all directions; if large spill isolate 50m; evacuate immediate area if fire or major spill
— Key Hazards —
• Flammable/combustible material.
• May be ignited by heat, sparks or flames.
• When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion
— First Actions —
• CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper
• Stay upwind, uphill and/or upstream.
• Keep unauthorized personnel away.
• Ventilate closed spaces before entering, but only if properly trained and equipped.
SOURCE: allfirefighter.com/hazmat/un/3535 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN3535 Toxic solid, flammable, inorganic, n.o.s. Cls6 ERG134 | allfirefighter.com/hazmat/un/3535SMS / 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/3535
Advertisement
FAQ
Flammable/combustible material. May be ignited by heat, sparks or flames. When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion Corrosives in contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. TOXIC and/or CORROSIVE; inhalation, ingestion or skin contact with material may cause severe Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause environmental
CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper Stay upwind, uphill and/or upstream. Keep unauthorized personnel away.
Level A or B required; SCBA mandatory; full chemical-resistant suit; avoid skin contact due to toxicity
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 134 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.