Understanding 1,2,3-Trifluorobenzene: A Closer Look from a Safety Perspective

Identification

Name: 1,2,3-Trifluorobenzene
Chemical Formula: C6H3F3
Synonyms: m-Trifluorobenzene
CAS Number: 456-55-3
Appearance: Colorless, transparent liquid
Odor: Sweet, aromatic scent typical for fluorinated benzenes

Hazard Identification

Classification: Flammable liquid, potential irritant
Signal Word: Warning
Hazard Statements: Highly flammable, vapor may irritate respiratory system and eyes, prolonged skin exposure can lead to irritation, high concentrations depress the central nervous system
Precautionary Statements: Avoid breathing vapors, keep away from heat and open flame, wear protective gloves and safety glasses, avoid longer contact with skin or eyes, ensure ventilation is adequate

Composition / Information on Ingredients

Chemical Name: 1,2,3-Trifluorobenzene
Concentration: Over 99% in standard laboratory reagents
Impurities: Trace organofluorine compounds depending on purity grade; sometimes residual solvents from manufacturing

First Aid Measures

Eye Contact: Rinse carefully with water for several minutes; seek medical help if irritation continues or vision becomes blurry
Skin Contact: Wash with soap and water; remove any contaminated clothing
Inhalation: Move to fresh air; rest and monitor for dizziness, headache, or drowsiness
Ingestion: Rinse mouth, avoid vomiting, seek medical assistance
Other: Those working regularly with trifluorobenzene ought to know their company’s emergency plan ahead of time

Fire-Fighting Measures

Suitable Extinguishing Media: Carbon dioxide, dry chemical, foam
Unsuitable Media: Avoid water jets as they can spread the burning liquid
Specific Hazards: Combustion creates toxic fluorine-containing fumes, including hydrogen fluoride and carbon oxides
Precautions for Firefighters: Protective equipment like self-contained breathing apparatus is a must when tackling fires involving trifluorobenzene; stay upwind and keep unnecessary people away

Accidental Release Measures

Personal Precautions: Evacuate area if large release, provide ventilation, keep away sources of ignition
Spill Handling: Absorb liquid with sand or inert material, collect in sealed containers, ventilate spill area
Clean-up: Use rubber gloves and safety goggles, avoid direct skin contact, prevent material from entering drains, dispose according to local rules

Handling and Storage

Handling: Work in well-ventilated settings, avoid inhaling vapors, never use around open flames or sparks, minimize splashing and skin contact
Storage: Store in tightly sealed containers, keep in cool, dry places, segregate from oxidizers and corrosive materials; labeling should follow local chemical hygiene standards

Exposure Controls and Personal Protection

Engineering Controls: Fume hoods or local exhaust ventilation where vapors accumulate
Personal Protective Equipment: Safety glasses, nitrile or neoprene gloves, lab coats, closed shoes, splash protection if risk of spraying
Respiratory Protection: Masks if vapor concentrations rise above comfort levels; in industrial settings, proper air-purifying respirators as recommended by OH&S officers

Physical and Chemical Properties

Physical State: Liquid
Color: Clear or faintly yellow
Boiling Point: About 90–95°C
Melting Point: Below 0°C
Flash Point: Close to 20°C
Vapor Pressure: Moderate at room temperature
Solubility: Low in water, high in organic solvents
Odor Threshold: Noticeable aromatic odor at low concentrations
Density: Around 1.3 g/cm³ at room temperature

Stability and Reactivity

Stability: Stable under proper storage, sensitive to strong oxidizing agents
Reactivity: Can react vigorously with strong acids or alkali; prolonged contact with metals can cause slow degradation
Conditions to Avoid: Excessive heat, sunlight, open flame, contact with oxidizers or acids

Toxicological Information

Acute Effects: Irritation of skin, eyes, and respiratory tract on direct exposure
Chronic Effects: High exposures could affect the central nervous system; no established evidence for carcinogenicity
Routes of Exposure: Inhalation, skin or eye contact, accidental oral uptake
Symptoms: Dizziness, nausea, headache if inhaled in quantity; local irritation on skin or mucous membranes

Ecological Information

Aquatic Toxicity: Fish and aquatic life may suffer from direct discharges
Persistence: Not rapidly biodegradable; tends to persist in environments where spilled
Bioaccumulation: Based on its chemical profile, moderate potential compared to non-fluorinated aromatics
General Precaution: Never pour down sinks or drains; environmental releases from labs or industry operations threaten small waterways and require reporting under local rules

Disposal Considerations

Waste Handling: Treat liquid as hazardous waste, keep away from landfill, bring to specialized chemical disposal
Container Disposal: Empty containers must be triple-rinsed, then treated as contaminated waste
Recycling: No established, safe routes for recycling trifluorobenzene once contaminated
Legislation: Always check the latest regional, state, or national regulations on hazardous organic waste

Transport Information

UN Number: 1993 for general flammable liquids, assigned for ground, sea, or air shipments
Class: 3 (Flammable liquids)
Packing Group: II, requiring robust packaging and clear hazard communication
Transport Precautions: Container must be upright, labeled, and protected from crashing or puncturing; leaks during shipping demand immediate reporting and clean-up

Regulatory Information

Global Inventories: Registered under most major chemical inventories (TSCA, REACH)
Workplace Limits: No universal occupational exposure limits, though some industry-specific thresholds apply; employers often adopt conservative guidelines for airborne concentrations
Hazard Communication: Falls under general rules for labeling and storage of flammable, toxic industrial chemicals; the Globally Harmonized System covers the main pictograms and wording for workplace safety
Enforcement: Compliance checks under environmental and occupational legislation hinge on secure records and up-to-date training for staff handling trifluorobenzene