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Name: Hexafluoropropylene
Chemical Formula: C3F6
CAS No.: 116-15-4
Common Uses: Monomer for fluoropolymers, intermediates for chemical synthesis, production of specialty materials in aerospace and electronics industries
Physical Appearance: Colorless, highly volatile gas with faintly sweet odor
Hazard Class: Flammable gas, pressurized gas
Health Risks: Exposure can cause serious respiratory irritation, frostbite on skin contact due to rapid evaporation, and potentially central nervous system effects at high doses
Acute Exposure Effects: Dizziness, headache, eye and throat discomfort, confusion after high-concentration inhalation
Fire/Explosion Risks: Ignites quickly in air, may cause pressure vessel rupture if overheated
Warning Symbols: GHS02 (Flammable), GHS04 (Compressed Gas), GHS07 (Irritant)
Substance: Single-constituent chemical
Main Component: Hexafluoropropylene, >99% by weight
Impurities: Typically trace fluorinated compounds due to manufacturing processes, concentrations vary by supplier and batch
Inhalation: Remove person from exposure area quickly, seek fresh air, give oxygen if breathing is difficult, call for medical attention if symptoms persist
Skin Contact: In case of frostbite or skin exposure, immediately rinse with lukewarm water, do not rub affected area, wrap with sterile dressing, seek medical help for severe cases
Eye Contact: Rinse thoroughly with clean water for several minutes, hold eyelids open, get medical evaluation
Ingestion: Highly unlikely to ingest gas; if suspected, seek immediate medical attention
Suitable Extinguishing Media: Dry chemical, carbon dioxide, or water spray
Special Hazards: Thermal decomposition yields toxic and corrosive fumes, including hydrogen fluoride and carbonyl fluoride
Protective Equipment: Full protective clothing and positive-pressure self-contained breathing apparatus required for responders
Firefighting Actions: Evacuate area, cool cylinders exposed to fire with water, avoid inhalation of gases or fumes
Personal Protection: Evacuate non-essential personnel, ventilate area, wear chemical-resistant gloves and goggles
Containment: Stop leak at source where safe to do so, prevent gas from entering confined spaces
Clean-Up Methods: Use mechanical ventilation, avoid sources of ignition, monitor air concentrations
Environmental Impact: Prevent discharge into waterways, soil, or drains due to potential toxicity toward aquatic life
Handling: Use in closed systems, avoid direct breathing of vapors, ensure trained personnel perform transfers
Storage: Store in cool, well-ventilated areas away from heat, open flames, strong oxidizers, and moisture
Container Requirements: Keep containers tightly sealed and regularly checked for leaks
Special Precautions: Use proper grounding and bonding to dissipate static electricity; signage for hazardous gases
Engineering Controls: Local exhaust ventilation and explosion-proof equipment in work areas
Exposure Limits: OSHA and ACGIH recommend exposure limits for similar fluorinated gases at 0.1 ppm TWA, but specific Hexafluoropropylene limit may not be fully established everywhere
Personal Protection: Full-face respirators for high concentrations, chemical-resistant gloves, splash-proof safety goggles, flame-retardant work clothing
Monitoring: Continuous gas detection equipment and regular workplace air testing
Molecular Weight: 150 g/mol
Boiling Point: -29.4°C (-20.9°F)
Melting Point: -156°C (-248.8°F)
Vapor Pressure: Substantial at ambient temperatures
Solubility: Low in water; soluble in organic solvents
Odor Threshold: Not well defined due to low odor intensity
Other Properties: Non-corrosive to metals under ordinary conditions but can create acids if hydrolyzed
Chemical Stability: Stable under normal conditions in sealed containers
Incompatible Materials: Alkali metals, strong oxidizers, finely powdered metals, sources of ignition
Reactivity: Reacts with strong bases and may form toxic breakdown products
Decomposition Products: Thermal breakdown yields hydrogen fluoride and carbonyl fluoride, both highly toxic
Uncontrolled Reactions: Risk of rupture and explosion if mixed with incompatible chemicals
Acute Toxicity: Exposure leads to mucous membrane irritation, headache, vertigo, potentially unconsciousness at high doses
Chronic Effects: Repeated inhalation linked to liver and kidney effects in animal studies, though human data remains limited
Carcinogenicity: Not classified as carcinogenic by main agencies, but chronic inhalation raises concern due to fluorinated compound breakdown
Sensitization: No strong evidence for skin sensitization, but inhalation may worsen pre-existing asthma or lung disease
Aquatic Toxicity: Fluorinated compounds disturb aquatic ecosystems even at low levels, and Hexafluoropropylene may be highly toxic to water organisms
Persistence: Persists in the environment, breakdown products can accumulate and cause long-term harm
Bioaccumulation: Not considered significantly bioaccumulative due to volatility, but degradation products may pose risk
Other Environmental Concerns: Can contribute to greenhouse effect as a fluorinated greenhouse gas
Waste Handling: Destroyed by regulated incineration with advanced emission controls for fluorine-containing wastes
Container Disposal: Empty gas cylinders with residue returned to supplier or authorized disposal center, never to landfill or regular waste
Environmental Protection: Prevent release to soil or water, adherence to regional hazardous waste legislation
UN Number: UN 2411
Hazard Class: 2.1 (Flammable Gas)
Proper Shipping Name: Hexafluoropropylene, compressed
Packing Group: Not assigned for gases
Transport Precautions: Only by trained, authorized handlers, secure cylinders upright with valve caps, prohibition of open flames during loading/unloading
Regulatory Restrictions: Banned on passenger aircraft; only shipped by cargo with proper documentation and labeling
Occupational Safety: Regulated under OSHA hazardous chemical rules in industrial settings
Environmental Release: Requires reporting under several regional toxic release inventories, including EPA TSCA in the United States
Labeling: GHS-compliant hazard pictograms and statements required on shipping and storage containers
International Restrictions: Subject to controls under the Rotterdam Convention in certain countries for precursor use
Worker Protection: Mandatory training, exposure monitoring, and emergency procedures enforced by national safety bodies
