UN 2446 — Nitrocresols, solid
Placard: Toxic. ERG Guide 153. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 2446 At a Glance
UN 2446 (Nitrocresols, solid) is listed as DOT Class 6 Toxic 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 2446 is Nitrocresols, solid, a toxic nitrophenolic solid assigned to ERG Guide 153. Skin absorption, dust and toxic fire products are key hazards.
Hazard overview: TOXIC nitrophenolic solid; inhalation, ingestion or skin absorption may cause serious systemic injury. Dust and contaminated clothing can extend exposure. Combustible solid: may burn but does not ignite readily.
Response guidance: For UN 2446, isolate the area, avoid skin contact and use SCBA where dust, vapor, mist or fire is present. Contain toxic/corrosive runoff and verify exact product controls with SDS and ERG 153.
Firefighter training notes: Training for UN 2446 should emphasize toxic/corrosive exposure routes, skin absorption, SCBA use, decontamination, runoff containment and SDS verification. Use ERG 153, SDS and local SOP.
Regulatory context: Nitrocresols, solid is regulated as a hazardous material for transport and emergency response. Storage, exposure, spill reporting, waste and fire-code duties depend on quantity, concentration and jurisdiction; verify shipping papers, SDS and local authority requirements.
Storage & handling: Nitrocresols, solid should be stored in tightly closed compatible containers in a secure toxic/corrosive-material area with ventilation, secondary containment, restricted access and SDS-based segregation.
UN 2446 Quick Details
Common Hazards of UN 2446
- TOXIC nitrophenolic solid; inhalation, ingestion or skin absorption may cause serious systemic injury.
- Dust and contaminated clothing can extend exposure.
- Combustible solid: may burn but does not ignite readily.
- Molten material can cause severe burns and toxic contact exposure.
- Fire may produce nitrogen oxides, phenolic smoke and other toxic gases.
- Runoff may carry toxic nitrophenolic contamination.
- Exact isomer/formulation should be verified from SDS.
Chemical Identity & Physical Properties
Yellow to brown crystalline solid or powder. May have a slight phenolic odor. Solid at room temperature.
| Also known as | MononitrocresolsNitro-cresolsNitrocresol isomersNitro methyl phenols |
| Appearance | Yellow to brown crystalline solid or powder. May have a slight phenolic odor. Solid at room temperature. |
| Flash Point | Not applicable (solid) |
| Boiling Point | Decomposes before boiling, approximately 250-270C (482-518F) |
| Vapor Density | Not applicable (solid) |
| Water Reactivity | Slightly soluble in water; no violent reaction but aqueous solutions are toxic and corrosive |
Fireground Response Guidance — UN 2446
Extinguishing Media
PPE Requirements
Use positive-pressure SCBA for dust, vapor, mist, fire or confined-space exposure. Wear chemical-resistant gloves, boots, eye/face protection and clothing; avoid skin contact.
Isolation & Evacuation
First Actions for a UN 2446 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 dust, liquid, 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 2446 — Nitrocresols, solidUse 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.