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Product Name: Chlorine Pentafluoride
Chemical Formula: ClF5
Common Synonyms: Chlorine fluoride, Pentafluorochloro compounds
CAS Number: 13637-63-3
Recommended Use: Strong oxidizing agent for industrial synthesis and fluorinating processes
Manufacturer Contact: Usually offered by specialty gas suppliers with 24-hour emergency numbers posted on the pressurized cylinder
Emergency Overview: Pressurized, toxic, reactive gas with a sharp, stinging odor and highly irritating impact on eyes and airways
GHS Classification: Oxidizing Gas (Category 1), Acute Toxicity Inhalation (Category 2), Skin Corrosion/Irritation (Category 1), Specific Target Organ Toxicity (Single Exposure, Category 2)
Label Elements: Danger signal word; hazard pictograms for gas under pressure, skull and crossbones, corrosion and oxidizer
Hazard Statements: Causes severe burns, fatal if inhaled, may cause organ damage, supports combustion even without air, reacts violently with organics
Precautionary Statements: Keep away from flammable materials, do not breathe gas, use in well-ventilated or controlled environments, avoid skin or eye contact
Potential Health Effects: Intense irritation to eyes, nose, throat, and lungs, potential for delayed lung damage, skin blisters and ulcers, can be deadly at very low concentrations
Environmental Impact: Contributes to ozone depletion and contains persistent fluoride radicals
Substance Name: Chlorine Pentafluoride
Chemical Formula: ClF5
Concentration: 100% for pure cylinder contents
Impurities: No additives or stabilizers; degradation may produce ClF3, Cl2, and elemental F2 traces
Molecular Weight: 130.45 g/mol
EC Number: 237-079-9
Inhalation: Move person to fresh air, keep still, monitor breathing, administer oxygen if difficulty persists, immediate physician attention vital for asthma or respiratory symptoms
Skin Contact: Remove contaminated clothing, flush skin with copious amounts of running water, seek medical help, burn dressings required for blisters
Eye Contact: Rinse eyes with water at moderate pressure for 15 minutes, keep eyelids open, immediate transport to hospital critical
Ingestion: Improbable due to gaseous state and severe irritation on exposure; give no liquids, direct to emergency room
Most Important Symptoms/Effects: Cough, severe difficulty breathing, skin or eye blistering, pulmonary edema, frostbite-like injury
Immediate Medical Attention Needed: Advanced pulmonary support, oxygen therapy, burn management, rapid decontamination procedures
Suitable Extinguishing Media: Do not use water, carbon dioxide, dry chemicals, or foam directly; isolated blaze best controlled by shutting off gas
Specific Hazards: Intensifies combustion, triggers fires even with non-flammable materials like asbestos, glass, steel, forms toxic gases with common firefighting agents
Firefighter Precautions: Full chemical protective suits, self-contained breathing apparatus, fight fire from maximum distance
Explosion Data: Reacts explosively with organics, powdered metals, water vapor, and even dust; pressure buildup inside cylinders may rupture violently
Special Procedures: Isolate area, cool adjoining cylinders with massive water sprays, evacuate upwind sectors, do not direct water on leaking containers
Personal Precautions: Full face protection and gas-tight chemical suits, supply air or SCBA, strict exclusion of personnel without training
Environmental Precautions: Prevent release into sewers, waterways, or soil due to acute toxicity and potential to degrade piping or containment
Containment and Cleaning Up: Evacuate spill area, use remote handling tools to stop leak, ventilate closed spaces, neutralize with dry lime or soda ash only with expert oversight
Notification Requirements: Notify local and national response organizations for chemical incidents; document area and time of initial release
Precautions for Safe Handling: Operate in ventilated labs with atmospheric scrubbers, handle only under strict protocols, check for system leaks, avoid organics, combustibles, or moisture near storage points
Storage Conditions: Secure upright in corrosion-resistant pressure cylinders, keep below 50°C, separate from reducers, acids, combustibles
Incompatible Materials: Hydrocarbons, alcohols, metals, silicon, glass, strong acids and alkalis, moisture; avoid all incompatible piping and packaging
Special Handling Practices: Require two-person rule, written standard operating procedures, inspection before use, emergency rescue gear on hand
Empty Cylinder Precautions: Do not attempt refilling, avoid exposing to atmosphere, close all valves tightly, label as hazardous residue
Engineering Controls: Gas cabinets, local exhaust, leak detection, alarm and monitoring systems for worker safety
Occupational Exposure Limits: NIOSH REL: 0.1 ppm (Ceiling), OSHA: No permissible exposure limit set
Personal Protection Gear: Positive pressure self-contained breathing apparatus, full-body chemical protective suit, gloves made of Teflon, PCTFE, or butyl rubber, safety goggles with face shields
Hygiene Measures: Decontaminate all equipment and clothing after use, no eating, drinking, or smoking in workspaces, immediate showers mandated on suspected exposure
Ventilation: Forced ventilation with complete air replacement, fume hoods only, no recirculated air, alarm systems for leaks
Appearance: Colorless, corrosive gas, or yellow-green condenser liquid under pressure
Odor: Sharp, irritating, choking chlorine/fluorine-like smell
Odor Threshold: Detectable at concentration well below toxic threshold
Boiling Point: -13.1°C
Melting Point: -103°C
Vapor Pressure: 2 atm at 20°C
Solubility: Reacts violently with water, forming hydrochloric and hydrofluoric acids
Density: 3.23 g/L (gas at 0°C, 1 atm)
Specific Gravity (liquid): 1.93 (water = 1)
Evaporation Rate: Rapid as compressed gas
Flammability: Non-flammable, strong oxidizer
Explosive Properties: Initiates combustion of many substances, pressurized containers may rupture violently
Chemical Stability: Stable under recommended storage conditions, intense hazard under heat or direct sunlight
Hazardous Reactions: Violent or explosive with organics, metals, non-metals, water, reducing agents, many plastics
Conditions to Avoid: Heat, sparks, open flame, sunlight, incompatible materials, moisture
Incompatible Materials: Nearly all organic compounds, reducing agents, silicon, glass, iron, greases, oils, acids; can corrode most building materials
Hazardous Decomposition: Releases toxic or corrosive chlorine, hydrofluoric acid, various volatile fluorides if decomposed
Acute Toxicity: LC50 rat (4h): 124 ppm; very potent by inhalation, immediate lung damage
Routes of Exposure: Inhalation main route; skin and eye exposure also common due to reactive fumes
Symptoms of Exposure: Severe respiratory tract irritation, difficulty breathing, coughing, nausea, chemical burns, delayed pulmonary edema, skin and eye injuries may be permanent
Chronic Effects: Repeated exposure may lead to chronic bronchitis, fluorosis, long-term respiratory impairment, tooth and bone changes
Carcinogenicity: Not classified by IARC, NTP, or OSHA; known severe toxicity on short exposure
Mutagenicity/Teratogenicity: No comprehensive studies; animal data limited, but fluoride compounds generally risk mutations at high doses
Special Sensitivities: Those with pre-existing respiratory trouble at higher risk
Ecotoxicity: Highly toxic to aquatic and terrestrial life, potent acidification of water and soil, damages vegetation on contact
Aquatic Mobility: Gas phase persists, hydrolyzes rapidly, forms persistent hazardous acids
Persistence and Degradability: Fluorinated byproducts accumulate, potential for long-lived residues, fluoride ions do not break down easily
Bioaccumulation: Not known to accumulate in tissues, but environmental breakdown products persistent and hazardous
Other Adverse Effects: Fatality to fish, amphibians, and most organisms at exposures above trace levels, destroys food chains in spill pathways
Waste Disposal Methods: Neutralize gas in a specialized alkaline scrubber system under expert direction, avoid direct release, never pour down drains
Container Disposal: Triple wash and vent empty cylinders, return to supplier or licensed hazardous waste manager, strict adherence to cylinder handling regulations
Environmental Release: Avoid at all costs; releases controlled only by emergency response personnel trained for toxic gas incidents
Special Precautions: Residual gas handling must be detailed and supervised, disposal logs maintained for regulatory audit
UN Number: UN 3082
Proper Shipping Name: Chlorine pentafluoride, compressed
Hazard Class: 2.3 (Toxic Gas), 5.1 (Oxidizer)
Packing Group: I (highest danger)
Labels Required: Toxic gas, oxidizer
Special Precautions: Only qualified carriers, fully labeled cylinders, segregate from incompatible cargo, shipping papers and emergency response guidance included
Regulations: DOT, ICAO/IATA, IMDG international toxic gas shipping rules apply
OSHA Status: Recognized hazardous chemical, subject to workplace right-to-know and process safety rules
SARA Title III: Extremely Hazardous Substance under Section 302, reportable quantities and inventory listing
TSCA Inventory: Listed
RCRA Waste Number: D003 (reactive), U999 (toxic by inhalation)
Clean Air Act: Section 112(r) toxic substance, risk management handling required
International Requirements: Subject to production, handling, and transport regulations worldwide, import/export controls for ODS and high-intensity oxidizers
Worker Protection Standard: Written exposure control plans, emergency training, incident reporting mandated at all facilities
Labeling and Marking: Clearly labeled containers, logistics paperwork, hazard communication protocols enforced
