☣️ UN 3262 • CLASS 8
Corrosive solid, basic, inorganic, n.o.s.
Placard: Corrosive. 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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Quick details
UN 3262
Class: 8
Placard type: Corrosive
ERG: Guide 154 (check current ERG)
Isolation: ERG 154: isolate spill 25m all directions; for large spills isolate 50m and evacuate immediate area downwind
Chemical & Response Details
| Also known as | Inorganic basic corrosive solidAlkaline corrosive solidBasic inorganic solid n.o.s.Caustic inorganic solid |
| Appearance | Variable appearance depending on specific substance; typically white to gray crystalline or granular solid at room temperature. May be odorless or have slight characteristic odor. Generic classification covering various inorganic bases not otherwise specified. |
| Flash Point | Not applicable (non-flammable solid) |
| Boiling Point | Variable depending on specific substance; typically high temperature decomposition rather than boiling |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | May react with water generating heat and forming corrosive alkaline solutions; some substances may react violently |
| Extinguishing | Dry chemical, sand, or lime for containment; avoid water spray directly on material if reactive |
| PPE | ⚠️ Level B minimum with face shield and chemical-resistant suit; SCBA required; rubber or neoprene gloves; avoid all skin contact with solid or solutions |
| Isolation | ERG 154: isolate spill 25m all directions; for large spills isolate 50m and evacuate immediate area downwind |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- TOXIC and/or CORROSIVE; inhalation, ingestion or skin contact with material may cause severe injury
- 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
- Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive
- Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.).
- Corrosives in contact with metals may evolve flammable hydrogen gas.
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.
- 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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UN 3262 — Corrosive solid, basic, inorganic, n.o.s HAZMAT RADIO NOTE — UN 3262
Product: Corrosive solid, basic, inorganic, n.o.s.
Class 8 / Corrosive / ERG 154
PPE: Level B minimum with face shield and chemical-resistant suit; SCBA required; rubber or neoprene gloves; avoid all skin contact with solid or solutions
ISOLATION: ERG 154: isolate spill 25m all directions; for large spills isolate 50m and evacuate immediate area downwind
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 3262 — Corrosive solid, basic, inorganic, n.o.s.
Class: 8 | Placard: Corrosive | ERG Guide: 154
Appearance: Variable appearance depending on specific substance; typically white to gray crystalline or granular solid at room temperature. May be odorless or have slight characteristic odor. Generic classification covering various inorganic bases not otherwise specified.
Water Reactivity: May react with water generating heat and forming corrosive alkaline solutions; some substances may react violently
Extinguishing: Dry chemical, sand, or lime for containment; avoid water spray directly on material if reactive
PPE: Level B minimum with face shield and chemical-resistant suit; SCBA required; rubber or neoprene gloves; avoid all skin contact with solid or solutions
Isolation: ERG 154: isolate spill 25m all directions; for large spills isolate 50m and evacuate immediate area downwind
— Key Hazards —
• TOXIC and/or CORROSIVE; inhalation, ingestion or skin contact with material may cause severe injury
• 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.
• Ventilate closed spaces before entering, but only if properly trained and equipped.
SOURCE: allfirefighter.com/hazmat/un/3262 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN3262 Corrosive solid, basic, inorganic, n.o.s. Cls8 ERG154 | allfirefighter.com/hazmat/un/3262SMS / 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/3262
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FAQ
TOXIC and/or CORROSIVE; inhalation, ingestion or skin contact with material may cause severe injury 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 Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Corrosives in contact with metals may evolve flammable hydrogen gas.
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 B minimum with face shield and chemical-resistant suit; SCBA required; rubber or neoprene gloves; avoid all skin contact with solid or solutions
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 154 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.