Product Name: Methyltriethylammonium Trifluoromethanesulfonate
Chemical Formula: C8H18F3NO3S
Synonyms: MTEA OTf, Methyltriethylammonium Triflate
CAS Number: 23806-16-0
Use: Laboratory reagent, phase-transfer catalyst, ionic liquid precursor
Manufacturer: Standard chemical suppliers for research and industry
Contact: Refer to manufacturer for local emergency numbers and supplier details
Emergency Overview: White to off-white solid, mild odor, may cause severe eye and skin irritation
Classification: Eye irritation, Skin irritation, Acute toxicity—Oral (Category 4), Specific target organ toxicity
GHS Labeling: Exclamation mark, Corrosive pictograms
Signal Word: Warning
Hazard Statements: Harmful if swallowed, causes serious eye damage, may cause skin irritation
Precautionary Statements: Avoid breathing dust, wash hands after handling, wear protective gloves, wear eye protection, do not eat or drink when using this material
Routes of Exposure: Inhalation, skin and eye contact, ingestion
Target Organs: Eyes, upper respiratory tract, skin
Chemical Name: Methyltriethylammonium Trifluoromethanesulfonate
CAS Number: 23806-16-0
Concentration: ≥99%
Impurities: Residual solvents and water (<1%)
Additives: Not present
Eye Contact: Rinse thoroughly with water for at least 15 minutes, keep eyelids open, remove contacts, seek immediate medical advice
Skin Contact: Remove contaminated clothing, flush skin with water and soap for 15 minutes, seek medical attention for irritation
Inhalation: Move to fresh air, provide artificial respiration if breathing stops, seek medical help if symptoms develop
Ingestion: Rinse mouth, do not induce vomiting, drink water if conscious, seek immediate medical advice
Notes for Physician: Treat symptomatically, monitor respiratory and cardiovascular functions
Suitable Extinguishing Media: Water spray, carbon dioxide, dry chemical, foam
Hazardous Combustion Products: Carbon oxides, nitrogen oxides, sulfur oxides, hydrogen fluoride, toxic and irritating gases
Special Protective Equipment: Self-contained breathing apparatus, complete protective suit, avoid skin and eye contact
Fire and Explosion Hazards: May decompose on heating, releases toxic vapors
Advice for Firefighters: Evacuate area, fight fire from safe distance, use water to cool containers
Personal Protection: Gloves, lab coat, chemical safety goggles, respiratory protection in case of dust or inadequate ventilation
Environmental Precautions: Prevent spill from entering waterways, drains, soil
Spill Clean-up Methods: Sweep and shovel spilled material into suitable, labeled container, avoid raising dust, ventilate area
Disposal: Dispose in accordance with local, regional, national, international regulations
Handling: Use in chemical fume hood, wear suitable protective equipment, avoid inhalation, ingestion and contact with skin or eyes, keep containers tightly sealed
Storage: Store in tightly closed containers, keep in cool, dry, well-ventilated area, protect from moisture, keep away from incompatible materials such as strong oxidizers and acids
Hygiene Measures: Wash hands thoroughly after handling, do not eat, drink or smoke in work area
Engineering Controls: Use local exhaust ventilation or chemical fume hood to minimize exposure
Exposure Limits: Not established for this compound; follow general dust exposure guidelines
Personal Protective Equipment: Nitrile or neoprene gloves, chemical goggles or face shield, flame-resistant lab coat, dust respirator if needed
Environmental Exposure: Monitor effluent to prevent environmental contamination, use spill containment systems
Physical State: Solid (powder or crystalline)
Color: White to off-white
Odor: Faint, amine-like smell
Melting Point: 65–80 °C
Boiling Point: Not available (decomposes)
Solubility: Very soluble in water and polar organic solvents
Density: Approx. 1.3–1.5 g/cm³
pH (in solution): 5–7
Vapor Pressure: Negligible at ambient temperature
Partition Coefficient (log Kow): Not established
Decomposition Temp: >120 °C
Chemical Stability: Stable under recommended storage conditions, degrades on heating or in contact with strong acids and bases
Incompatible Materials: Strong oxidizers, strong acids, strong bases, moisture
Polymerization: Will not occur
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, hydrogen fluoride, nitrogen/sulfur oxides, trifluoromethanesulfonic acid fumes
Conditions to Avoid: Excessive heat, open flame, moisture, incompatible chemicals
Acute Toxicity: Harmful if swallowed, LD50 (oral) data not fully determined, moderate acute effects expected
Skin Corrosion/Irritation: Causes skin irritation, redness, possible burns upon prolonged contact
Serious Eye Damage/Irritation: Causes severe eye damage, redness, pain, risk of corneal injury
Respiratory Effects: May cause respiratory irritation, coughing, shortness of breath
Chronic Effects: Not fully studied; repeated exposure may aggravate skin or respiratory conditions
Carcinogenicity/Mutagenicity: No evidence for mutagenic, carcinogenic, or reproductive toxicity in available data
Aquatic Toxicity: Harmful to aquatic life, due to ionic and fluorinated components
Persistence and Degradability: Degradation not rapid; contains stable trifluoromethanesulfonate ion
Bioaccumulation: Low potential for bioaccumulation expected
Mobility in Soil: High water solubility leads to mobility in aquatic environments
Environmental Precautions: Avoid discharge into the environment, observe local regulations for water and soil protection
Waste Disposal Methods: Dispose as hazardous chemical waste through licensed disposal contractor
Contaminated Packaging: Dispose as hazardous waste, triple rinse containers
Special Precautions for Disposal: Do not allow material to reach ground water, water courses, or sewage system, comply with local, national, and international regulations
UN Number: Not regulated under UN transport requirements, but treat as hazardous chemicals
Transport Hazard Class: Not assigned; use proper labeling
Packing Group: Not assigned
Environmental Hazards: Minimally regulated for environment, but must report large accidental releases
Special Precautions for User: Prevent spills, use containers that are tightly sealed and properly labeled, avoid combined transport with incompatible substances
OSHA Hazard Statement: Classified as hazardous under OSHA Hazard Communication Standard
TSCA Status: Listed on the Toxic Substances Control Act Inventory
REACH Status: Registration may be required depending on tonnage and region
Other Regulatory Lists: Not specifically listed under SARA, CERCLA, or California Proposition 65
Labeling Requirements: GHS compliant hazard labels, safety phrases, and symbols
Other Information: Follow all applicable workplace safety, health, and environmental laws and standards, refer to your organization’s chemical hygiene plan for additional procedures and policies
