Chemical Name: N-Ethyl-N-Methylpiperidinium Bis((Trifluoromethyl)Sulfonyl)Imide
Synonyms: NEMPI-TFSI, N-Ethyl-N-Methylpiperidinium TFSI
Recommended Use: Electrolyte in advanced batteries, ionic liquid research, materials science
Supplier Information: Contact details for technical support, emergencies, and order questions
Emergency Telephone Number: 24-hour access for chemical emergencies (include both US and international numbers)
GHS Classification: Irritant to eyes and skin, low systemic toxicity with inhalation
Signal Word: Warning
Hazard Statements: Causes eye and skin irritation, may cause respiratory irritation, persistent environmental hazards
Precautionary Statements: Avoid all unnecessary personal contact, use only with ventilation, wash contaminated clothing promptly, store securely away from food
Appearance: Colorless to pale yellow liquid, often faint odor
Chemical Identity: N-Ethyl-N-Methylpiperidinium Bis((Trifluoromethyl)Sulfonyl)Imide
Chemical Formula: C10H17F6N2O4S2
CAS Number: 944537-99-9
Percent Composition: ≥99% (trace impurities generally less than 1%)
Impurities: Possible traces of unreacted piperidine species or TFSI
Inhalation: Move affected individual to fresh air, monitor for persistent cough or difficulty breathing, seek medical care if symptoms fail to resolve.
Skin Contact: Remove contaminated clothing, wash area with copious water and mild soap, seek assistance for persistent irritation.
Eye Contact: Rinse cautiously for at least 15 minutes, remove contact lenses if present and safe, obtain medical attention.
Ingestion: Rinse mouth if conscious, never induce vomiting unless directed by medical professional, provide medical help; show product label if possible.
Notes for Doctor: Treat symptomatically, pay attention to respiratory, dermal, or ocular symptoms
Suitable Extinguishing Media: Water spray, carbon dioxide, dry chemical foam, except direct water jet
Specific Hazards: Emits noxious or corrosive gases under fire (CO, CO2, nitrogen oxides, sulfur oxides, hydrogen fluoride)
Protective Equipment: Self-contained breathing apparatus, full protective gear, avoid inhaling combustion vapors
Firefighting Instructions: Approach from upwind side to avoid fumes, use non-sparking tools, keep containers cool with water spray
Explosion Hazards: Containers may rupture with intense heat
Personal Precautions: Equip responders with chemical-resistant gloves, goggles, respirator protection
Environmental Precautions: Prevent chemical from entering drains, sewers, or watercourses, isolate spill area
Spill Cleanup Methods: Absorb with inert material such as sand or vermiculite, collect with non-sparking shovels, dispose in closed labeled containers
Decontamination: Thorough cleaning of contaminated surfaces required, ventilate enclosed areas
Notifications: Report significant releases to local authorities, follow facility emergency protocol
Handling: Use only in well-ventilated, designated areas, avoid physical contact, prohibit eating, drinking, or smoking nearby, keep containers tightly sealed
Storage Conditions: Cool, dry, well-ventilated area away from incompatible materials such as oxidizers and strong acids
Incompatibilities: Avoid contact with strong reducing agents, avoid storing near reactive chemicals
Specific Practices: Segregate chemicals by hazard class, check inventory for leaking or decaying containers on a regular basis
Storage Temperature: Room temperature preferred; avoid freezing or extreme heat
Engineering Controls: Local exhaust hoods, chemical fume hoods, safety showers and eyewash stations nearby
Personal Protection: Safety goggles, nitrile or neoprene gloves, long-sleeved laboratory coats; face shield for large quantities, respiratory protection for poor ventilation
Respiratory Protection: Air-purifying respirator with combination organic vapor/acid gas cartridge as needed
Hygiene Practices: Wash thoroughly after handling, avoid skin and eye contact, remove contaminated clothing promptly, launder before reuse
Permissible Exposure Limits: Not formally established; minimize all unnecessary exposure
Physical State: Liquid, low to moderate viscosity
Color: Colorless to pale yellow
Odor: Faint, slightly sweet or musty
Molecular Weight: Approx. 438 g/mol
Melting Point: -30°C or below
Boiling Point: Decomposes prior to boiling, up to 350°C
Flash Point: Not readily flammable, estimated above 170°C
Solubility: Miscible with water and polar organic solvents; insoluble in hydrocarbons
Vapor Pressure: Negligible at room temperature
Density: 1.4-1.5 g/cm³ @20°C
pH: Neutral (6-7 for aqueous solutions)
Chemical Stability: Stable under normal ambient conditions, sensitive to strong oxidizers
Reactivity: Does not polymerize, compatible with standard glass and polymers
Hazardous Decomposition Products: CO, CO2, SOx, NOx, HF, possible release of piperidine vapors
Conditions to Avoid: Heat above 180°C, contact with strong acids or bases triggers breakdown
Incompatible Materials: Strong oxidizing/reducing agents, alkali metals, strong acids
Acute Toxicity: Low oral and dermal toxicity in animal studies, minimal inhalation hazard at room temperature
Skin Corrosion/Irritation: Causes irritation with prolonged contact
Serious Eye Damage/Irritation: May result in painful eye irritation; immediate flushing required
Respiratory Sensitization: Irritant effect at high aerosol concentrations
Carcinogenicity: No data showing carcinogenic effects
Mutagenicity: No evidence found, handle with care
Other Effects: No long-term epidemiological evidence in humans
Ecotoxicity: Persistent, low biodegradation rate, moderate toxicity to aquatic organisms (Daphnia, algae)
Aquatic Mobility: May persist in water/marine environments
Bioaccumulation: Potential for slow accumulation in sediment
Degradation: Strong bonds between C–F and S–O limit environmental breakdown
Other Environmental Data: Released quantities should be reported and minimized
Waste Disposal: Treat chemical as hazardous waste, send to permitted chemical incineration or deep-well injection facility
Container Disposal: Rinse emptied containers, mark as hazardous, recycle only if properly cleaned, avoid reusing containers
Regulatory Requirements: Follow local, state, and federal guidelines for hazardous waste chemical disposal; partner with certified waste companies
Precautions: Never flush large amounts into drains, do not landfill raw material, document disposal method
UN Number: Not classified under standard UN numbers
Proper Shipping Name: Not regulated for ground, air, or sea, but handle as hazardous with proper documentation
Packing Group: Not assigned
Transport Hazard Class: Not classified, yet secondary hazards may apply in certain jurisdictions
Special Precautions: Secure, leakproof containers, protect from physical damage, document emergency contact
Inventory Status: Confirmed on relevant country inventories (TSCA in US, REACH in EU, DSL in Canada)
Labeling Requirements: GHS-compliant pictograms, hazard and precautionary statements
Workplace Regulation: Subject to OSHA’s Hazard Communication Standard, chemical hygiene protocols
Community Right-to-Know: Tier II and Toxic Release Inventory reporting in some states, local notification as appropriate
Other Requirements: Safety assessments for new applications, assess downstream user safety obligations
