UN 2307 — Nitro chlorobenzotrifluoride
Placard: Toxic. ERG Guide 152. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 2307 is Nitro chlorobenzotrifluoride, a toxic nitroaromatic liquid assigned to ERG Guide 152. Fire can produce fluorinated/chlorinated toxic decomposition products.
Hazard overview: TOXIC nitroaromatic liquid; inhalation, ingestion or skin contact may cause serious injury. Combustible material: may burn but does not ignite readily. Vapors may be heavier than air and collect in low or confined areas when heated.
Response guidance: For a UN 2307 incident, verify the product with shipping papers, container markings, SDS and ERG Guide 152. Establish incident command, isolate the area, stay upwind, control ignition or incompatibility hazards, prevent runoff, dust or vapor spread and base entry/fire-control actions on monitoring and local SOP.
Firefighter training notes: Training for UN 2307 should emphasize toxic skin/vapor/dust exposure, contaminated clothing, toxic fire products, decontamination waste and runoff containment. Use ERG 152, SDS and local SOP.
Regulatory context: Nitro chlorobenzotrifluoride is regulated as a hazardous material for transportation and emergency response purposes. Storage, workplace exposure, emergency planning, spill reporting, waste handling and environmental requirements vary by exact product, concentration, quantity and jurisdiction. Verify current requirements through shipping papers, SDS, container markings and applicable DOT, OSHA, EPA, NFPA, state or local authority guidance.
Storage & handling: Nitro chlorobenzotrifluoride should be stored in tightly closed compatible containers in a secure toxic/corrosive-material area with secondary containment, restricted access, ventilation and waste/decontamination planning according to SDS.
UN 2307 Quick Details
Common Hazards of UN 2307
- TOXIC nitroaromatic liquid; inhalation, ingestion or skin contact may cause serious injury.
- Combustible material: may burn but does not ignite readily.
- Vapors may be heavier than air and collect in low or confined areas when heated.
- Fire may produce hydrogen fluoride, hydrogen chloride where chlorinated, nitrogen oxides and toxic fluorinated smoke.
- Runoff may carry toxic nitroaromatic/fluorinated contamination.
- Skin contact and contaminated clothing can extend exposure.
- Containers may rupture or fail when heated.
Chemical Identity & Physical Properties
Pale yellow to amber crystalline solid or liquid (melts around 34-36°C). Faint aromatic odor. Typically encountered as a molten liquid above room temperature.
| Also known as | Nitro chlorobenzotrifluoride4-Chloro-3-nitrobenzotrifluoride1-Chloro-2-nitro-4-(trifluoromethyl)benzenep-Chloro-m-nitrobenzotrifluoride |
| CAS Number | 121-17-5 |
| Appearance | Pale yellow to amber crystalline solid or liquid (melts around 34-36°C). Faint aromatic odor. Typically encountered as a molten liquid above room temperature. |
| Flash Point | 135°C (275°F) |
| Boiling Point | 222°C (432°F) |
| Vapor Density | 7.8 (much heavier than air) |
| Water Reactivity | No significant reaction with water, but insoluble |
Fireground Response Guidance — UN 2307
Extinguishing Media
PPE Requirements
Use positive-pressure SCBA for vapor, dust, mist, fire or confined-space exposure. Wear chemical-resistant gloves, boots, eye/face protection and protective clothing selected from SDS; avoid all skin contact.
Isolation & Evacuation
First Actions for a UN 2307 Incident
- CALL 911. Then call the emergency response telephone number on the shipping paper, if available.
- Keep unauthorized personnel away.
- Stay upwind, uphill and/or upstream.
- Avoid breathing vapors, dust, mist, smoke or fumes and avoid skin or eye contact.
- Do not touch damaged containers or spilled material unless properly trained and wearing appropriate protective equipment.
- Prevent contaminated liquid, dust, residues, runoff and decontamination waste from spreading.
- Ventilate closed spaces before entering, but only if properly trained, equipped, monitored and authorized by incident command.
- Isolate the spill or release area and expand the perimeter for fire involvement, vapor spread, dust generation, water reaction or unknown product identity.
- Use ERG Guide 152, shipping papers, SDS, air monitoring and incident command for protective actions.
📋 Copy & Share Field Card
UN 2307 — Nitro chlorobenzotrifluorideUse 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.