UN 2433 — Chloronitrotoluenes, liquid
Placard: Toxic. ERG Guide 152. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
UN 2433 is Chloronitrotoluenes, liquid, a highly toxic chloronitroaromatic liquid assigned to ERG Guide 152. Isomer mixture and SDS should be verified before close action.
Hazard overview: HIGHLY TOXIC chloronitroaromatic liquid; inhalation, ingestion or skin absorption may be fatal. Skin contact and contaminated clothing can extend exposure. Combustible liquid: may burn but does not ignite readily.
Response guidance: For UN 2433, 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 152.
Firefighter training notes: Training for UN 2433 should emphasize toxic/corrosive exposure routes, skin absorption, SCBA use, decontamination, runoff containment and SDS verification. Use ERG 152, SDS and local SOP.
Regulatory context: Chloronitrotoluenes, liquid 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: Chloronitrotoluenes, liquid 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 2433 Quick Details
Common Hazards of UN 2433
- HIGHLY TOXIC chloronitroaromatic liquid; inhalation, ingestion or skin absorption may be fatal.
- Skin contact and contaminated clothing can extend exposure.
- Combustible liquid: may burn but does not ignite readily.
- Denser-than-water liquid may form a separate layer and spread contamination.
- Fire may produce hydrogen chloride, nitrogen oxides and toxic chlorinated smoke.
- Runoff may be toxic, persistent and environmentally harmful.
- Exact isomer mixture should be verified from SDS and shipping papers.
Chemical Identity & Physical Properties
Yellow to amber oily liquid with a faint aromatic odor. Mixture of isomers including ortho-, meta-, and para-chloronitrotoluenes. Denser than water and insoluble.
| Also known as | ChloronitrotoluenesCNTChloronitrotoluolNitrotoluene chloride isomersToluidine precursors |
| Appearance | Yellow to amber oily liquid with a faint aromatic odor. Mixture of isomers including ortho-, meta-, and para-chloronitrotoluenes. Denser than water and insoluble. |
| Flash Point | 127°C (261°F) closed cup |
| Boiling Point | 235-245°C (455-473°F) depending on isomer |
| Vapor Density | 5.9 (much heavier than air) |
| Water Reactivity | No significant reaction with water; insoluble and forms separate layer |
Fireground Response Guidance — UN 2433
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 2433 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 152, SDS, shipping papers and monitoring to set isolation, evacuation and entry decisions.
📋 Copy & Share Field Card
UN 2433 — Chloronitrotoluenes, liquidUse 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.