UN 3267 — Corrosive liquid, basic, organic, n.o.s.
Placard: Corrosive. ERG Guide 153. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 3267 At a Glance
UN 3267 (Corrosive liquid, basic, organic) is listed as DOT Class 8 Corrosive and is assigned to ERG Guide 153. Use this page to review placard data, common hazards, PPE notes, isolation context, first actions, and related UN numbers.
UN 3267 is Corrosive liquid, basic, organic, n.o.s., a broad alkaline organic corrosive liquid assigned to ERG Guide 153. Combustibility and exact base/SDS review are key.
Hazard overview: CORROSIVE basic organic liquid, n.o.s.; contact can severely burn eyes, skin and respiratory tissue. Many organic bases are combustible; heated vapors may form ignitable mixtures in low areas or sewers. Water mixing or acid neutralization may release heat and spread alkaline contamination.
Response guidance: For UN 3267, isolate the spill, avoid splash/mist exposure and use SCBA with chemical protection. Control water/neutralization hazards and contain corrosive runoff under ERG 153.
Firefighter training notes: Training for UN 3267 should emphasize corrosive splash/mist control, water/neutralization heat, incompatible materials, SCBA use and runoff containment. Use ERG 153, SDS and local SOP.
Regulatory context: Corrosive liquid, basic, organic, n.o.s. is regulated as a hazardous material for transport and emergency response. Storage, reporting, exposure, waste and incident-notification duties depend on quantity, composition, concentration and jurisdiction; verify shipping papers, SDS and authority guidance.
Storage & handling: Corrosive liquid, basic, organic, n.o.s. should be stored in compatible corrosion-resistant containers with secondary containment, ventilation and segregation from acids, metals where incompatible and reactive materials.
UN 3267 Quick Details
Common Hazards of UN 3267
- CORROSIVE basic organic liquid, n.o.s.; contact can severely burn eyes, skin and respiratory tissue.
- Many organic bases are combustible; heated vapors may form ignitable mixtures in low areas or sewers.
- Water mixing or acid neutralization may release heat and spread alkaline contamination.
- Vapors or mists may be toxic, irritating or corrosive depending on the exact amine/base.
- Fire may produce nitrogen oxides, carbon monoxide and irritating/toxic smoke.
- Runoff may be alkaline, toxic and harmful to waterways.
- Exact organic base, flash point and concentration must be verified from SDS.
Chemical Identity & Physical Properties
Variable appearance depending on specific chemical; typically a liquid at room temperature. N.o.s. entry covers various organic basic corrosive liquids not specifically listed elsewhere.
| Also known as | Corrosive liquid, basic, organic, n.o.s.Organic basic corrosive liquidAlkaline organic corrosive liquid |
| Appearance | Variable appearance depending on specific chemical; typically a liquid at room temperature. N.o.s. entry covers various organic basic corrosive liquids not specifically listed elsewhere. |
| Flash Point | Variable, depends on specific substance; consult SDS for exact chemical |
| Boiling Point | Variable, depends on specific substance; consult SDS for exact chemical |
| Vapor Density | Variable, depends on specific substance; typically heavier than air |
| Water Reactivity | May react with water generating heat; some organic bases react exothermically with water |
Fireground Response Guidance — UN 3267
Extinguishing Media
PPE Requirements
Use positive-pressure SCBA for vapor, mist, fire or confined-space exposure. Wear chemical-resistant splash suit, gloves, boots and eye/face protection.
Isolation & Evacuation
First Actions for a UN 3267 Incident
- Call 911 and the emergency response number on the shipping paper, if available.
- Keep unauthorized personnel away and establish incident command.
- Stay upwind, uphill and upstream.
- Avoid breathing vapor, dust, mist, smoke or fumes and avoid skin or eye contact.
- Do not touch damaged containers or spilled material without proper training and PPE.
- Prevent contaminated liquid, dust, runoff and decontamination waste from spreading.
- Ventilate confined spaces only after monitoring and only if properly trained and equipped.
- Use ERG Guide 153, SDS, shipping papers and monitoring to set isolation, evacuation and entry decisions.
📋 Copy & Share Field Card
UN 3267 — Corrosive liquid, basic, organic, n.o.s.Use for: Quick radio or face-to-face size-up. Short, structured, field-ready.
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief.
Use for: Quick text to command or incoming units. Fits in a single SMS.