Product Name: 1-Ethyl-3-Methylimidazolium Bis(Trifluoromethylsulfonyl)Imide
Synonyms: EMIM-TFSI, Ionic Liquid
Chemical Family: Imidazolium ionic liquid
CAS Number: 174899-83-3
Recommended Use: Electrolytes in batteries, solvents, catalysis
Supplier: Manufacturer’s contact details available on request
Emergency Telephone: Provided by supplier, consult label or SDS
Description of Hazards: May cause skin and serious eye irritation on contact; inhalation may cause mild respiratory discomfort; ingestion can irritate the digestive tract.
GHS Label Elements: Exclamation mark symbol, warning phrase “Causes serious eye and skin irritation.”
Signal Word: Warning
Precautionary Statements: Avoid contact with skin, eyes, or clothing; use with local ventilation; wash hands thoroughly after handling; if in eyes, rinse cautiously with water.
Routes of Exposure: Ingestion, skin and eye contact, inhalation.
Potential Health Effects: Prolonged contact can cause mild allergic reactions or dermatitis; has not been classified as carcinogenic or mutagenic by IARC, NTP, or OSHA at workplace concentrations.
Chemical Name: 1-Ethyl-3-Methylimidazolium Bis(Trifluoromethylsulfonyl)Imide
Common Name: EMIM-TFSI
Chemical Formula: C8H11F6N3O4S2
Concentration: 100%
CAS Number: 174899-83-3
Other Ingredients: None detected, no known additives or impurities affecting classification.
Inhalation: Move to fresh air; seek medical attention if symptoms such as dizziness or shortness of breath persist.
Skin Contact: Immediately wash with soap and plenty of water; remove contaminated clothing; seek medical advice if irritation develops.
Eye Contact: Rinse cautiously with water for at least 15 minutes, remove contact lenses if present and easy to do, get medical attention if redness or pain continues.
Ingestion: Rinse mouth with water; do not induce vomiting; seek medical help if feeling unwell.
Most Important Symptoms/Effects: Skin redness and irritation, eye discomfort, sore throat if inhaled, stomach pain if ingested.
Suitable Extinguishing Media: Carbon dioxide, dry powder, foam, or water spray; use extinguishing media suited for surrounding fire.
Specific Hazards During Fire: Decomposition produces fumes of hydrogen fluoride, sulfur oxides, nitrogen oxides, and carbon oxides.
Advice for Firefighters: Wear self-contained breathing apparatus and protective clothing; avoid inhaling combustion by-products.
Special Protective Actions: Use water spray to cool fire-exposed containers; move containers from fire area if safely possible.
Unusual Fire & Explosion Hazards: Non-flammable under normal conditions; combustion products can be toxic.
Personal Precautions: Use personal protective equipment including gloves, goggles, and lab coat; ensure adequate ventilation.
Spill Clean-up: Soak up with inert absorbent material (e.g., sand, diatomaceous earth), collect in an appropriate closed container for disposal.
Environmental Precautions: Prevent further leakage or spillage if safe to do so; avoid discharge to the environment or watercourses.
Methods for Cleaning Up: Wash spill area with plenty of water; dispose according to local regulations.
Other Precautions: Evacuate area if vapors or large spills occur; ventilate area thoroughly before re-entry.
Handling: Avoid contact with skin and eyes; use only in well-ventilated areas; do not eat, drink, or smoke while handling.
Storage: Store in tightly closed container in a cool, dry, well-ventilated location away from heat, sparks, open flames or direct sunlight.
Incompatible Materials: Strong oxidizers, acids, bases; keep away from moisture.
Specific Requirements: Keep container tightly sealed to avoid moisture ingress; store separated from food, feed, and potable water.
Special Storage Conditions: Avoid freezing or high temperature to prevent decomposition or pressure buildup.
Exposure Limits: No established occupational exposure limits for this compound by OSHA, NIOSH, or ACGIH.
Engineering Controls: Work in a chemical fume hood or use local exhaust ventilation to minimize vapor exposure.
Eye Protection: Chemical safety goggles or face shield.
Skin Protection: Chemical-resistant gloves (nitrile, neoprene), long-sleeved clothing.
Respiratory Protection: Use NIOSH-approved respirator if airborne concentrations exceed recommended limits.
Hygiene Measures: Wash hands, face, and exposed skin thoroughly after handling; remove contaminated clothing and wash before reuse.
Environmental Exposure Controls: Prevent contaminant release into soil, water, or drains.
Appearance: Clear to pale yellow liquid
Odor: Faint, slightly sweet odor
Odor Threshold: Not determined
pH: 5–7 (concentrated)
Melting Point/Freezing Point: -17°C
Boiling Point/Range: Above 200°C (decomposes before boiling)
Flash Point: >170°C (closed cup)
Evaporation Rate: Negligible
Flammability: Not flammable under normal conditions
Vapor Pressure: <0.1 Pa at 25°C
Vapor Density: Not available
Relative Density: 1.52 g/cm³ (20°C)
Solubility in Water: Slightly miscible
Partition Coefficient (n-octanol/water): Not available
Auto-Ignition Temperature: Not determined
Decomposition Temperature: >250°C
Viscosity: 37 cP at 25°C
Chemical Stability: Stable under normal temperatures and pressures.
Possibility of Hazardous Reactions: No hazardous polymerization anticipated.
Conditions to Avoid: Strong heating, exposure to moisture, freezing, and direct sunlight.
Incompatible Materials: Strong oxidizers, acids, and bases.
Hazardous Decomposition Products: Hydrogen fluoride, sulfur oxides, carbon oxides, nitrogen oxides, and other fluorinated compounds.
Acute Toxicity: Oral LD50 (rat): >2,000 mg/kg; Inhalation and dermal toxicity not fully characterized.
Skin Corrosion/Irritation: Causes mild to moderate irritation after prolonged contact.
Serious Eye Damage/Irritation: Causes serious eye irritation.
Respiratory Sensitization: No data available, unlikely under normal handling.
Germ Cell Mutagenicity: No evidence of genetic effects found in standard tests.
Carcinogenicity: No classification as a carcinogen from major regulatory agencies.
Reproductive Toxicity: No data showing detrimental reproductive effects.
Target Organ Effects: No specific organ known to be affected from current studies.
Other Information: Potential for mild central nervous system effects if ingested in large quantities.
Ecotoxicity: Limited information available; some ionic liquids have been shown to have moderate aquatic toxicity with EC50 values for algae and fish >10 mg/L.
Persistence and Degradability: Not rapidly biodegradable; shows persistence in the environment.
Bioaccumulative Potential: Not expected to bioaccumulate significantly due to moderate water solubility.
Mobility in Soil: Moderate mobility; may migrate in moist environments.
Other Adverse Effects: Avoid large-scale release into water systems or soil due to limited breakdown.
Waste Treatment Methods: Dispose of contents and container at an approved hazardous waste collection point in compliance with local, regional, and national regulations.
Contaminated Packaging: Triple rinse before reuse or recycling; puncture and render containers unusable.
Environmental Precautions: Do not flush into surface water, groundwater, or drains; consult local authorities for proper disposal.
Special Considerations: Consider recycling or recovery before disposal where possible.
UN Number: Not regulated as a dangerous good under UN, IMDG, IATA, or DOT regulations.
Proper Shipping Name: Not classified as hazardous for transport.
Transport Hazard Classes: Not applicable
Packing Group: Not assigned
Environmental Hazards: Avoid spillage to prevent environmental contamination.
Special Precautions for Transport: Keep container upright and tightly closed; ensure protective packaging to prevent leaks.
US Federal Regulations: Not listed under SARA Title III Sections 302, 304, or 313; not subject to reporting requirements of CERCLA; TSCA-listed.
EU Regulations: Not classified as hazardous under REACH Annex II; not included on the list of substances of very high concern (SVHC) as of last update.
Canadian Regulations: DSL-listed; not regulated under WHMIS as a hazardous product.
Other International Inventories: Included in Australian AICS and Japanese ENCS chemical inventories.
Labelling Requirements: GHS precautionary pictogram recommended for occupational use; follow all workplace safety labeling.
