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Chemical Name: 3-Chlorobenzotrifluoride
Chemical Formula: C7H4ClF3
Common Synonyms: meta-Chlorobenzotrifluoride
CAS Number: 98-16-8
Physical Appearance: Clear, colorless to pale yellow liquid, distinct aromatic odor
Intended Use: Common as an intermediate in processes where specialty compounds serve the production of industrial dyes, pharmaceuticals, and certain agricultural products. Recognizing the chemical name and an appearance with a unique odor builds awareness from the start, especially for those who routinely handle or store volatile organics.
Physical Hazards: Liquid categorized as combustible, can catch fire at elevated temperatures.
Health Hazards: Vapor exposure may irritate eyes, skin, and respiratory tract. Inhalation leads to dizziness or headaches after prolonged exposure. Contact with liquid can cause dryness or moderate burns on sensitive skin.
Environmental Hazards: Toxic to aquatic life, especially with ongoing discharge or spills near waterways. Spills run the risk of contaminating groundwater, harming fish and amphibians.
Signal Word: Warning
Precautionary Measures: Personal protective equipment strongly recommended in settings where fumes develop or contact is likely. Avoid breathing vapors or mist. Work in well-ventilated spaces. Keep sources of ignition away from storage or open containers.
Main Component: 3-Chlorobenzotrifluoride at concentrations near or above 98 percent by weight
Impurities: Trace impurities typically under 2 percent, depending on the supplier and production method. Most batches are free of significant stabilizers or additives. Pure material increases risk concentration—use that as a guide for planning safe workspaces.
Inhalation: Move exposed person to fresh air. If coughing, dizziness, or headache develops, seek medical attention. Supportive care including oxygen may help if symptoms persist.
Skin Contact: Remove contaminated clothing. Rinse skin thoroughly with soap and water. Seek medical help for irritation or blistering.
Eye Contact: Rinse with water for several minutes. Remove lenses if worn and easy to do. Medical oversight recommended if discomfort continues.
Ingestion: Do not induce vomiting. Rinse mouth with plenty of water. Call a medical professional promptly—chemical ingestion carries potential systemic effects. Trained responders are best equipped to handle accidental ingestions.
Suitable Extinguishing Media: Foam, dry chemical powder, or carbon dioxide. Avoid water streams that could spread contaminated runoff.
Special Hazards: Burning releases toxic fumes such as hydrogen chloride and fluorinated pollutants.
Protective Equipment: Wear full gear including self-contained breathing apparatus. Responders must avoid inhaling smoke or vapors due to the risk from byproduct gases.
Advice for Firefighters: Move undamaged containers away from fire if safe. Use water spray to cool exposed surfaces but avoid direct water jets. Knowledge of these fire risks guides responsible storage and site design, especially in facilities using multiple solvents.
Personal Precautions: Evacuate area as needed to control vapor build-up. Use gloves, goggles, and respirators if exposure risk is high.
Environmental Precautions: Keep spills out of drains and surface water. Block pathways with absorbent material or sand.
Methods for Cleanup: Absorb liquid with inert material like vermiculite or sand. Transfer collected material into properly labeled containers. Ventilate the area to dissipate residual vapors. Facilities equipped with spill kits and clear protocols see fewer accidental exposures.
Safe Handling: Open containers in well-ventilated sites. Do not smoke or use exposed flames nearby. Avoid contact with skin and eyes. Transfer between containers slowly to control splashing or static discharge.
Storage Requirements: Store in tightly closed containers in a cool, dry location, separated from strong oxidizers and acidic materials. Proper labeling and inventory controls help limit unauthorized or unsafe access.
Incompatibilities: Incompatible with strong bases, acids, and oxidizers. Spontaneous heat generation or hazardous gas release is possible if mixed with reactive chemicals. Using the buddy system and regular safety checks in storerooms limits the risk of unnoticed leaks or container degradation.
Occupational Exposure Limits: No strict regulatory limit in some countries, but monitoring is common. Always reference local chemical safety guidelines and internal threshold values if available.
Engineering Controls: Local exhaust ventilation helps keep vapor levels low. Where large-scale use occurs, robust general ventilation and vapor sensors reduce airborne exposure.
Personal Protective Equipment: Use chemical-resistant gloves and safety goggles. Wear flame-retardant workwear. Respiratory protection aids those in confined spaces or with repeated use. Regular workplace checks and up-to-date training on PPE can decrease incidents over time.
Physical State: Liquid
Color: Typically colorless to pale yellow
Odor: Aromatic, pungent
Boiling Point: Ranges from 139 to 142 °C
Melting Point: Nearly -34 °C
Vapor Pressure: Moderate at room temperature
Density: Roughly 1.3 g/cm3
Solubility: Practically insoluble in water; mixes well with many organic solvents
Flash Point: Around 43 °C (open cup)
Partition Coefficient: log Kow about 3.7, implies potential for bioaccumulation in aquatic organisms. Knowing these properties makes it easier to manage fire and spill risks, and adjust ventilation or protective layers as conditions change.
Chemical Stability: Stable at room temperature in sealed containers
Reactivity Conditions: Prolonged exposure to light, heat, or moisture increases breakdown.
Hazardous Reactions: May react vigorously with strong acids, bases, or oxidizers.
Decomposition Products: On burning, generates hydrogen chloride, hydrogen fluoride, and possibly phosgene gas.
Avoid: Mixing with incompatible chemicals or storing near ignition sources. Regular audits and updated SDS references help spot gaps in chemical management routines.
Routes of Entry: Inhalation, skin absorption, accidental ingestion
Acute Effects: Moderate toxicity by inhalation; concentrated vapors bring on nose and throat irritation, central nervous system symptoms, and sometimes nausea. Liquid contact dries or inflames skin, splashes in eyes cause pain and temporary vision changes.
Chronic Effects: Prolonged, repeated exposure might result in skin dryness, allergic reactions, or mild liver function changes. Workplace studies suggest no link to chronic toxicity at normal occupational levels, although monitoring remains important.
Carcinogenicity: Not listed as a suspected carcinogen by major international agencies.
Additional Notes: Individual sensitivities vary. Prompt first aid and regular safety drills do prevent minor exposures from turning into bigger problems.
Acute Toxicity: Highly toxic to fish and aquatic creatures in low concentrations.
Persistence and Degradability: Tends to persist in soil and water. Breakdown is slow without sunlight or special treatment.
Bioaccumulation Potential: Moderate risk in aquatic environments, given partition coefficient values.
Mobility in Soil: Has potential to migrate into groundwater, particularly in sandy or porous soils.
Impact: Ongoing monitoring of local water systems is key after accidental spills, and remedial action should prioritize aquatic safety.
Waste Handling: Collect waste in tightly sealed containers for incineration in licensed facilities.
Disposal Methods: Prohibit pouring into drains, sewers, or natural waterways. Avoid open burning or unregulated dumping.
Regulatory Considerations: Disposal practices shaped by local chemical waste regulations; compliance audits and documentation limit future liability.
Used Containers: Triple rinse and puncture before transporting to an approved hazardous waste processor. Education and standard operating procedures for workers cut down on improper disposal risks.
UN Number: 3082 (Environmental Hazardous Substance, Liquid, N.O.S), this coding provides consistency for emergency responders.
Hazard Class: 9 (Miscellaneous dangerous substances)
Packing Group: III (minor danger, but still regulated)
Transport Precautions: Use leak-proof barrels, label properly, and keep upright during shipment. Documentation helps customs and field inspectors confirm safe, legal transit. Controlled access to transportation routes and trained staff reduce incidents in logistics.
Workplace Safety: Subject to control under chemical safety and hazardous substances workplace acts in most countries.
Environmental Controls: Spills and emissions may trigger mandatory reporting to environmental agencies.
Inventory Listings: Included in chemical inventories such as TSCA for the United States, with similar registration in Europe under REACH.
Worker Right-to-Know: Facilities must provide accessible information on health risks and safe use. Regular updates to policy keep the workforce protected as regulations evolve.
