Product Name: Methoxyethyldiethylmethylammonium Bis(Fluorosulfonyl)Imide
Chemical Family: Ionic Liquid
Synonyms: MEDMA FSI
CAS Number: 944111-04-2
Recommended Use: Electrolyte component in batteries, specialty solvent
Manufacturer’s Name: Supplier information available upon request
Emergency Phone Number: Provided by local manufacturer or supplier
Classification: Acute toxicity (Category 4, oral and dermal), Skin irritation (Category 2), Eye damage (Category 1), Aquatic chronic hazard (Category 3)
GHS Label Elements: Signal Word: Danger
Hazard Statements: Harmful if swallowed or in contact with skin, Causes severe skin burns and eye damage, Toxic to aquatic life with long lasting effects
Precautionary Statements: Wear protective gloves, protective clothing, eye and face protection; Wash hands thoroughly after handling; Do not eat, drink, or smoke when using; Avoid release to the environment; IF SWALLOWED, rinse mouth, do not induce vomiting, seek medical advice immediately; IF ON SKIN, remove contaminated clothing and rinse skin; IF INHALED, remove victim to fresh air; IF IN EYES, flush with water for several minutes and seek care
Chemical Name: Methoxyethyldiethylmethylammonium Bis(Fluorosulfonyl)Imide
Chemical Formula: C10H22F2N2O5S2
Concentration: 95–100%
Impurities: Trace moisture (<0.5%), trace acid residue (<100 ppm)
Other Components: No other hazardous components identified
General Advice: Remove from exposure, keep victim warm and at rest
Inhalation: Move exposed person to fresh air, maintain respiration, seek urgent medical attention
Skin Contact: Rinse area with copious water for at least 15 minutes, remove contaminated clothing; if irritation persists, contact medical provider
Eye Contact: Rinse cautiously with water for at least 15 minutes, remove contact lenses if present, seek immediate ophthalmologist consultation
Ingestion: Rinse mouth, avoid vomiting, do not give anything by mouth to an unconscious person, seek immediate care out of precaution
Most Important Symptoms: Severe eye and skin burns, respiratory distress, gastrointestinal upset, delayed effects possible
Suitable Extinguishing Media: CO2, dry powder, or foam extinguishers, avoid using water streams directly due to risk of spattering
Special Hazards: Releases toxic fumes including HF, SOx, NOx under high temperature
Special Protective Equipment: Full firefighter turnout gear, self-contained breathing apparatus
Precautions: Remove containers from area, keep upwind, prevent run-off from fire control measures from entering drains, minimize inhalation risks
Personal Precautions: Restrict access, wear full protective gear (goggles, gloves, splash apron), ventilate area
Spill Clean-Up: Absorb spills with inert material such as sand or vermiculite, gather in sealed, chemical-resistant container
Environmental Precautions: Prevent spillage from entering waterways, drains or soil
Decontamination: Wash area with dilute soda ash solution, ventilate until dry, remove absorbents for safe disposal
Handling: Keep area ventilated, avoid inhalation and contact with skin, eyewear and gloves required
Storage: Store tightly sealed in dry, cool area at room temperature; segregate from moisture and acids
Technical Precautions: Use corrosion-resistant containment, utilize spill containment trays if possible; ensure labeling and hazard signage visible
Incompatibilities: Moisture, water, strong acids, oxidizing agents
Control Parameters: No established national exposure limits for this chemical
Engineering Controls: Local exhaust ventilation, fume hoods, and eyewash stations
Personal Protection: Chemical-resistant gloves (nitrile or neoprene), lab coat, safety goggles, full face shield for splash risks
Respiratory Protection: NIOSH-approved organic vapor respirator if ventilation inadequate
Hygiene Measures: Wash hands before eating, drinking, or using restroom, decontaminate clothing and accessories after use
Appearance: Colorless to pale yellow liquid
Odor: Slightly sweet, ether-like odor
Melting Point: < -20 °C
Boiling Point: Decomposes before boiling
Flash Point: >120 °C (Closed cup)
Solubility: Readily soluble in water and organic solvents
Density: 1.25–1.32 g/cm³ at 20 °C
Vapor Pressure: <0.01 mmHg @ 20 °C
pH: Not applicable (non-aqueous liquid)
Partition Coefficient (log Kow): Not determined
Chemical Stability: Stable under normal conditions and protected from moisture
Polymerization: No hazardous polymerization reported
Hazardous Decomposition Products: Forms HF, SOx, F2, and NOx during thermal decomposition
Incompatible Materials: Water, alcohols, acids, oxidizers
Conditions to Avoid: Humidity, elevated temperature, open flames, direct sunlight
Acute Toxicity: Harmful if swallowed or inhaled; LD50 (oral, rat): >200 mg/kg; LD50 (dermal, rabbit): >1,500 mg/kg
Skin Corrosion/Irritation: Causes severe skin burns
Serious Eye Damage/Irritation: Induces serious eye damage
Respiratory Sensitization: May trigger irritation to upper respiratory tract upon inhalation
Chronic Toxicity: Long-term exposure studies not available; avoid chronic exposure
Other Routes: Symptoms include nausea, vomiting, headache, burns on exposure
Ecotoxicity: Toxic to aquatic life with long-lasting effects, fish and daphnia studies indicate LC50 (96 hr, fish) >10 mg/L
Persistence and Degradability: Compound demonstrates low biodegradability under standard environmental conditions
Bioaccumulation: Not expected based on low Kow
Mobility in Soil: High solubility gives risk of leaching to groundwater
Other Adverse Effects: No evidence for ozone depletion potential; advisable to follow established regulations for hazardous substances
Disposal Methods: Dispose of via licensed chemical waste contractor in accordance with local, regional, and national schedules
Packaging Disposal: Triple rinse, render containers unusable before disposal
Incineration: Permitted only in authorized, high-temperature incinerators with treatment for acidic gases
Special Precautions: Avoid discharge into sewer systems or open water bodies; keep records of disposal transactions for audit trail
UN Number: Not assigned
Transport Hazard Class: Not classified under DOT, IATA, or IMDG for routine carriage; treat with same care as corrosive liquids
Proper Shipping Name: Chemical, N.O.S. (Methoxyethyldiethylmethylammonium Bis(Fluorosulfonyl)Imide)
Packing Group: III (suggested, based on corrosive nature)
Label Requirements: Corrosive material (8), Environmental hazard (as per region)
Special Precautions: Prevent package damage, secure upright, mark with "Keep Dry" and "Handle with Gloves" on outer container
TSCA Inventory: Not listed
REACH Registration: Subject to notification if manufactured or imported in the EU region
SARA Title III: Not listed specifically; monitor as a hazardous chemical
California Proposition 65: Not included on the Prop 65 list
WHMIS Classification: E (Corrosive Material)
Other Regulations: Handle under the rules for hazardous chemicals; maintain spill and use records in laboratory settings
Labelling Requirements: GHS pictograms for corrosive and environmental hazard; clear hazard and precautionary wording on containers
