Chemical Name: N-Ethyl-N-Methylpyrrolidinium Bis((Trifluoromethyl)Sulfonyl)Imide
Synonyms: [EMPy][TFSI], Ionic Liquid, Pyrrolidinium-based Ionic Liquid
CAS Number: 73825-85-9
Recommended Use: Electrolyte component in batteries, solvents for chemical synthesis, specialty solvent applications
Supplier Details: Chemical manufacturer or distributor name, address, and emergency contact phone number
Emergency Telephone: Chemical emergency telephone number provided by supplier
GHS Classification: Eye Irritation Category 2A, Skin Irritation Category 2, Specific Target Organ Toxicity - Single Exposure Category 3 (respiratory tract)
Signal Word: Warning
Hazard Statements: May cause eye irritation, Prolonged skin contact may cause irritation, May cause respiratory tract irritation during handling
Precautionary Statements: Avoid breathing dust, fume, gas, mist, vapors, spray, Wear protective gloves and eye protection, Wash exposed skin after handling, Use only outdoors or in a well-ventilated area, If in eyes rinse cautiously
Chemical Identity: N-Ethyl-N-Methylpyrrolidinium Bis((Trifluoromethyl)Sulfonyl)Imide
Common Name: [EMPy][TFSI] Ionic Liquid
CAS Number: 73825-85-9
Concentration: 98% or higher (depending on supplier, minor water or residual solvent may be present)
Impurities: No significant impurities above regulated levels
Inhalation: Move exposed person to fresh air, keep person comfortable, seek medical help for respiratory symptoms
Skin Contact: Wash skin with soap and water, remove contaminated clothing, seek medical advice if skin irritation develops or persists
Eye Contact: Rinse thoroughly with water, remove contact lenses if present and easy to do, continue rinsing and seek medical attention for persistent eye irritation
Ingestion: Rinse mouth, do not induce vomiting, seek medical attention for symptoms such as nausea or stomach pain
Notes to Physician: Treat symptomatically and supportively, monitor for delayed effects
Suitable Extinguishing Media: Use alcohol-resistant foam, dry chemical powder, or carbon dioxide
Unsuitable Extinguishing Media: Do not use water jet if possible as it may spread the fire
Specific Hazards: Combustion may release toxic gases including carbon monoxide, carbon dioxide, sulfur oxides, nitrogen oxides, hydrogen fluoride, and other fluorinated substances
Special Protective Equipment: Firefighters wear self-contained breathing apparatus, full protective clothing
Advice for Firefighters: Move containers away from fire area if possible, prevent fire-fighting runoff from entering drains
Personal Precautions: Put on chemical-resistant gloves, goggles, and protective clothing to avoid contact
Environmental Precautions: Prevent spills from entering drains, sewers, waterways, or soil
Methods for Containment: Contain spill using absorbent materials (e.g. sand, vermiculite), avoid raising dust
Cleanup Methods: Absorb spilled product, collect and place in suitable disposal containers, ventilate area of spill
Additional Advice: Notify appropriate authorities of environmental releases, clean surfaces with mild detergent and water to remove residue
Safe Handling: Handle in a well-ventilated area, use appropriate local and general exhaust, minimize dust and vapor formation, avoid contact with skin, eyes, and clothing
Hygiene Practices: Wash hands thoroughly after handling, keep work clothing separate, do not eat, drink, or smoke in work areas
Storage Conditions: Store in tightly closed containers, away from moisture, heat, and incompatible substances such as strong acids and bases
Storage Temperature: Keep at room temperature away from direct sunlight
Incompatible Materials: Avoid storing with strong oxidizing agents, acids, alkali metals
Occupational Exposure Limits: No specific occupational exposure limits established for this compound
Engineering Controls: Use chemical fume hood, local exhaust ventilation, process enclosure if feasible
Eye Protection: Chemical safety goggles, safety glasses with side shields
Skin Protection: Wear impermeable gloves, long-sleeved chemical resistant lab coat, or protective clothing
Respiratory Protection: If dust or aerosols present, use appropriate respirator based on airborne concentrations
General Safety: Emergency eyewash and shower stations in work area
Appearance: Colorless to pale yellow liquid
Odor: Slight characteristic odor
Odor Threshold: Not established
pH: Not applicable (non-aqueous liquid)
Melting Point/Freezing Point: -14 °C to -7 °C
Boiling Point/Range: Decomposes above 320 °C
Flash Point: > 180 °C (closed cup)
Evaporation Rate: Not determined
Flammability: Not classified as flammable
Vapor Pressure: Very low, less than 0.01 mmHg at 25 °C
Vapor Density: Not determined
Density: 1.45 - 1.51 g/cm³ (25 °C)
Solubility: Soluble in polar organic solvents, low solubility in water
Partition Coefficient (n-octanol/water): Not determined
Auto-ignition Temperature: Not determined
Decomposition Temperature: >320 °C
Viscosity: 40–60 cP at 25°C
Chemical Stability: Stable under normal use and storage conditions
Hazardous Reactions: Strong exothermic reaction with strong acids or alkali, incompatible with oxidizers
Conditions to Avoid: Exposure to strong heat, open flames, moisture, ultraviolet light
Incompatible Materials: Strong oxidants, water (hydrolysis may occur over extended timescale), alkali metals
Hazardous Decomposition Products: May form toxic fumes including carbon oxides, nitrogen oxides, sulfur oxides, fluoro compounds under fire or thermal decomposition conditions
Acute Toxicity: Oral LD50 (rat) >2000 mg/kg (low acute toxicity)
Skin Corrosion/Irritation: Mild to moderate skin irritation on repeated or prolonged exposure
Serious Eye Damage/Irritation: May cause temporary eye discomfort, redness, watering
Respiratory or Skin Sensitization: Not expected to cause sensitization based on structure and experience
Germ Cell Mutagenicity: No data available
Carcinogenicity: Not listed as carcinogenic by IARC, NTP, OSHA
Reproductive Toxicity: No specific data available; no known reproductive hazards
STOT - Single Exposure: Possible transient respiratory tract irritation
STOT - Repeated Exposure: Not classified
Aspiration Hazard: Not expected to present aspiration hazard
Ecotoxicity: Based on available data, low acute aquatic toxicity; long-term studies not yet conclusive
Persistence and Degradability: Persistence in the environment likely, slow biodegradation based on available studies
Bioaccumulative Potential: Weak potential, but monitor for long-term environmental accumulation
Mobility in Soil: Limited mobility due to low water solubility and high sorption to sediments
Other Adverse Effects: No information on ozone depletion, photochemical ozone creation, or endocrine disruption at this time
Waste Treatment Methods: Dispose of product and its container via licensed waste disposal contractor
Product Disposal: Treat as hazardous waste, follow local, regional, national regulations for disposal, do not release to drains or environment
Contaminated Packaging: Rinse empty containers with suitable solvent and dispose of safely
Special Precautions: Incineration in approved facility preferable, avoid unprotected landfill disposal
UN Number: Not regulated for transport under UN Recommendations
Transport Hazard Class: Not classified as hazardous for transport
Packing Group: Not applicable
Environmental Hazards: Not a marine pollutant under IMDG Code
Special Precautions: Use containers in good condition, keep sealed during transport, protect from rough handling and extreme temperatures
Global Inventory Status: Listed or notification submitted on several country inventories such as TSCA (USA), EINECS/ELINCS (Europe), DSL (Canada), ENCS (Japan), AICS (Australia), KECI (Korea), PICCS (Philippines), IECSC (China)
OSHA (US): Not specifically regulated as a hazardous chemical
WHMIS (Canada): Not regulated under controlled products regulations
REACH Status (EU): Registration or notification required for production/import above specified thresholds
Other National Regulations: Observe all applicable international and local laws controlling chemical substances
