UN 3454 — Dinitrotoluenes, solid
Placard: Toxic. ERG Guide 152. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 3454 At a Glance
UN 3454 (Dinitrotoluenes, solid) is listed as DOT Class 6 Toxic and is assigned to ERG Guide 152. Use this page to review placard data, common hazards, PPE notes, isolation context, first actions, and related UN numbers.
UN 3454 is Dinitrotoluenes, solid, a toxic combustible nitroaromatic solid assigned to ERG Guide 152. Dermal absorption, molten burns and toxic runoff are key concerns.
Hazard overview: HIGHLY TOXIC nitroaromatic solid; inhalation, ingestion or skin absorption may cause severe injury. Combustible solid: may burn but does not ignite readily under normal conditions. Molten material can cause thermal burns and increase skin-absorption exposure.
Response guidance: For UN 3454, isolate the area, avoid skin contact and use SCBA where vapor, dust, mist or fire is present. Contain runoff and verify controls with SDS/ERG 152.
Firefighter training notes: Training for UN 3454 should emphasize exposure routes, SCBA use, vapor/dust monitoring, decontamination, runoff containment and SDS verification. Use ERG 152, SDS and local SOP.
Regulatory context: Dinitrotoluenes, solid is regulated as a hazardous material for transport and emergency response. Storage, reporting, exposure, waste and incident-notification duties depend on quantity, concentration, formulation and jurisdiction; verify shipping papers, SDS and authority guidance.
Storage & handling: Dinitrotoluenes, solid should be stored in tightly closed compatible containers with ventilation, secondary containment, restricted access and SDS-based segregation from incompatible materials.
UN 3454 Quick Details
Common Hazards of UN 3454
- HIGHLY TOXIC nitroaromatic solid; inhalation, ingestion or skin absorption may cause severe injury.
- Combustible solid: may burn but does not ignite readily under normal conditions.
- Molten material can cause thermal burns and increase skin-absorption exposure.
- Dust or residue can contaminate clothing, tools and runoff.
- Fire may produce nitrogen oxides, carbon monoxide and toxic aromatic smoke.
- Runoff may carry toxic nitroaromatic contamination and harm waterways.
- Exact isomer composition should be verified from SDS.
Chemical Identity & Physical Properties
Yellow to tan crystalline solid with a characteristic aromatic odor. Melts at approximately 70°C (158°F) to form a viscous liquid.
| Also known as | DNTDinitrotoluol2,4-Dinitrotoluene2,6-DinitrotolueneMethyldinitrobenzene |
| CAS Number | 25321-14-6 |
| Appearance | Yellow to tan crystalline solid with a characteristic aromatic odor. Melts at approximately 70°C (158°F) to form a viscous liquid. |
| Flash Point | 207°C (404°F) closed cup |
| Boiling Point | 300°C (572°F) with decomposition |
| Vapor Density | 6.3 (heavier than air when vaporized) |
| Water Reactivity | Insoluble in water; no significant reaction with water |
Fireground Response Guidance — UN 3454
Extinguishing Media
PPE Requirements
Use positive-pressure SCBA where vapor, dust, mist, smoke or fire is present. Wear chemical-resistant gloves, boots, eye/face protection and protective clothing.
Isolation & Evacuation
First Actions for a UN 3454 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, equipment 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 152, SDS, shipping papers and monitoring to set isolation, evacuation and entry decisions.
📋 Copy & Share Field Card
UN 3454 — Dinitrotoluenes, 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.