Product Name: 1-Hexyl-2,3-Dimethylimidazolium Hexafluorophosphate
Chemical Family: Ionic liquid (Imidazolium salt)
Chemical Formula: C11H21N2PF6
Synonyms: [hmim][PF6], Hexylmethylimidazolium hexafluorophosphate
CAS Number: 244193-50-8
Manufacturer: Specialty chemical suppliers for research and industry
Recommended Use: Solvent, catalyst, electrochemical and separation processes
Contact Information: Available in supplier Safety Data Sheet
Emergency Telephone Number: Check with chemical supplier for regional emergency contacts
Use Restrictions: Not for food, drug, or household use; intended for industrial and laboratory processes
Classification: Acute toxicity (oral, dermal), Serious eye irritation, Skin irritation, Specific target organ toxicity (single/repeated exposure), Possible environmental hazard
Label Elements: Warning signal word, exclamation mark pictogram
Hazard Statements: Harmful if swallowed or absorbed through skin, Causes skin and serious eye irritation, May cause respiratory tract irritation, Toxic to aquatic life with long lasting effects
Precautionary Statements: Avoid breathing dust or vapors, Avoid release to the environment, Wear protective gloves, clothing, eye and face protection, Wash hands thoroughly after handling, Take off contaminated clothing and wash before reuse
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Symptoms: Burning, redness, swelling, headache, coughing, nausea
Chemical Name: 1-Hexyl-2,3-Dimethylimidazolium Hexafluorophosphate
Common Name: [hmim][PF6]
CAS Number: 244193-50-8
Concentration: 98–100% (neat or in solution)
Impurities: Possible traces of starting materials or degradation products, presence depends on batch and supplier
Other Constituents: No known stabilizing additives or preservatives reported for pure compound
General Advice: Remove victim from exposure. Seek medical attention for any persistent symptoms.
Inhalation: Move to fresh air, maintain unobstructed breathing, support respiration if needed
Skin Contact: Remove all contaminated clothing, wash exposed skin with plenty of water and mild soap
Eye Contact: Rinse eyes for at least 15 minutes with water, keeping eyelids open; seek prompt medical evaluation
Ingestion: Rinse mouth, do not induce vomiting, drink water if conscious; get medical help without delay
Note to Physicians: Symptomatic treatment with attention to effects on respiratory and digestive tracts; consider delayed onset of symptoms
Suitable Extinguishing Media: Water spray, dry chemical powder, foam, carbon dioxide
Unsuitable Media: Avoid direct water stream on product to prevent spreading
Special Hazards: May give off toxic or corrosive gases under fire conditions including hydrogen fluoride, phosphorus oxides, carbon oxides, nitrogen oxides
Protective Equipment for Firefighters: Wear positive-pressure self-contained breathing apparatus (SCBA) and full protective gear
Firefighting Instructions: Approach from upwind, contain runoff to prevent environmental contamination, only trained personnel enter danger area
Personal Precautions: Evacuate area, ventilate, avoid inhalation and contact with skin or eyes
Protective Equipment: Chemical-resistant gloves, goggles, laboratory coat, respiratory protection if airborne dust or fumes possible
Environmental Precautions: Prevent further leakage or spillage if safe; avoid discharge into drains, surface water, or soil
Containment Methods: Dike and absorb with inert material such as sand, earth, or a compatible non-flammable absorbent
Clean-Up Procedures: Collect spilled material in containers for disposal, thoroughly wash affected area with water and detergent, ventilate area afterward
Safe Handling: Work with appropriate engineering controls such as fume hoods, minimize dust and fume formation, avoid ingestion or inhalation
Handling Precautions: Use only in well-ventilated areas, avoid direct skin and eye contact, wear suitable protective equipment
Storage Conditions: Keep in tightly sealed original containers, store in a cool, dry, well-ventilated area away from incompatible substances such as strong bases and oxidizers
Specific Storage Requirements: Store away from moisture sources as product may be moisture-sensitive, provide secondary containment for bulk quantities, label storage areas clearly
Engineering Controls: Use chemical fume hood or local exhaust ventilation, eye wash stations, and safety showers near work area
Exposure Limits: No established OSHA or ACGIH limits for this substance; minimize exposure as a precaution
Respiratory Protection: Use approved respirator suitable for airborne dusts or vapors if ventilation inadequate
Skin Protection: Select gloves tested against permeation: nitrile, neoprene, or other resistant material
Eye/Face Protection: Safety goggles or face shield meeting ANSI standard
Other Equipment: Lab coat, closed footwear, avoid open skin
Hygiene Measures: Wash hands and face after handling, keep any contaminated clothing separate, do not smoke, eat, or drink during use
Appearance: Clear to pale yellow liquid, viscous, can crystallize at low temperatures
Odor: Mild, not strongly characteristic or irritating at room temperature
Melting Point: Near –14°C
Boiling Point: Decomposes above 200°C before boiling
Flash Point: Estimated over 150°C (closed cup)
Auto-Ignition Temperature: Not determined
Solubility in Water: Slight, soluble in many organic solvents
Density: 1.24–1.28 g/cm³ at 20°C
Vapor Pressure: Negligible at room conditions
Partition Coefficient (log Kow): Not determined, but expected to partition to organic phase
pH: Not applicable for pure compound
Viscosity: Higher than water, dependent on temperature
Decomposition Temperature: Above 200°C with possible formation of toxic byproducts
Chemical Stability: Stable under recommended storage and handling conditions
Reactivity: May react vigorously with strong bases or oxidizing agents
Conditions to Avoid: High temperatures, exposure to moisture, contact with incompatible materials leading to decomposition
Incompatible Materials: Strong bases, strong oxidizers, strong acids, sources of fluorine or silicon compounds
Hazardous Decomposition Products: Hydrogen fluoride, phosphorus oxides, imidazole derivatives, carbon/nitrogen oxides under fire or prolonged heating
Polymerization: Not known to undergo hazardous polymerization
Acute Toxicity: May cause moderate harm on ingestion or skin contact, with nausea, headache, upset stomach
Inhalation Exposure: Elevated concentrations could cause dizziness, shortness of breath, mucous membrane irritation
Skin and Eye Effects: Contact triggers burning, redness, possible blistering, eye irritation can be immediate and intense
Chronic Toxicity: No confirmed reports in humans; studies with related imidazolium compounds show risk for organ and nerve system effects on repeated exposure
Sensitization: No clear evidence of allergic responses
Mutagenicity/Carcinogenicity: Long-term risks not established, but imidazolium salts sometimes linked with genetic or metabolic effects in animals
Reproductive Toxicity: Not enough data available to judge
Target Organs: Potential for liver, kidney, central nervous system hazards in high dose or repeated exposures
Ecotoxicity: Moderately to severely toxic to aquatic organisms, can show long-term adverse effects in aquatic environment even at low concentrations
Persistence and Degradability: Expected to persist in soil or water, slow natural breakdown, may accumulate
Bioaccumulation Potential: Not fully known, structurally similar ionic liquids have high environmental persistence
Mobility in Soil: Moderate, compound usually partitions into organic phase
Other Adverse Effects: Decomposition releases fluoride ions and related toxic species, harm aquatic food chains if released accidentally
Waste Treatment Methods: Collect and store waste in clearly labeled, tightly sealed containers away from incompatible substances
Disposal of Product: Deliver to authorized chemical waste disposal contractor, never pour down drain or place with regular trash
Disposal of Packaging: Triple rinse, deface label, dispose in accordance with local, state, federal, or regional regulations
Contaminated Material Handling: Treat all materials as hazardous, handle with gloves and avoid creating dust or splashes
Regulatory Waste Codes: Check local listing under hazardous or industrial chemicals
UN Number: Not classified with a UN Number in many jurisdictions, but check exact regulatory requirements
Transport Hazard Class: Not recognized under most ADR/RID/IMDG/IATA classes, but still handle as chemical cargo
Packing Group: Not regulated, use robust secondary containment
Marine Pollutant: Yes, due to significant aquatic hazard
Transport Precautions: Ship in leak-proof containers, avoid stacking or impacts, keep away from incompatible chemical shipments
TSCA Status (US): Not listed or subject to reporting under TSCA; for research and development only
REACH Information (EU): May not yet have full REACH registration; users need to check supply chain information
OSHA Status: Treated as hazardous chemical
WHMIS Classification (Canada): D2B - Toxic material causing other toxic effects
Other International Inventories: Not always listed due to specialty chemical status
Workplace Labeling: Chemical name and hazard phrases must appear on all labels and secondary containers, staff must receive training in handling
Restrictions: Use limited to professional, regulated handling in controlled environments
