Product Name: 1-Benzyl-3-Methylimidazolium Tosylate
Chemical Formula: C17H20N2O3S
Chemical Family: Imidazolium-based ionic liquid
Synonyms: BMIM Tosylate, CAS No. 410522-66-8
Intended Use: Solvent, research chemical, electrochemistry
Manufacturer: Supplier information included with batch
Emergency Phone: Provided by local authorities or supplier
Recommended Restrictions: Not for human consumption, avoid use by untrained personnel
Classification: Eye irritation (Category 2), Skin irritation (Category 2), Acute toxicity (Oral, Category 5)
Signal Word: Warning
Hazard Statements: Causes skin irritation. Causes serious eye irritation. May be harmful if swallowed. Prolonged or repeated contact may cause organ damage.
Pictograms: Exclamation mark
Precautionary Statements: Avoid direct contact with skin, eyes, and clothing. Do not eat, drink, or smoke during use. Wash hands thoroughly after handling.
Potential Health Effects: Eyes—reddening, pain. Skin—redness, dryness, irritation. Ingestion—gastrointestinal discomfort, headache. Inhalation—potential respiratory irritation in poorly ventilated spaces.
Chemical Name: 1-Benzyl-3-methylimidazolium tosylate
CAS Number: 410522-66-8
Concentration: >99% (by weight)
Impurities: Minor related imidazolium derivatives (<0.5%), water (<0.5%)
Relevant Components: Imidazolium cation, p-toluenesulfonate anion
Eye Contact: Rinse immediately with plenty of water for at least 15 minutes, keep eyelids open. Seek medical advice, especially if irritation continues.
Skin Contact: Remove contaminated clothing. Wash skin with soap and copious water for at least 15 minutes. Seek attention if irritation persists.
Inhalation: Move the person to fresh air. If breathing feels difficult, trained personnel provide oxygen. Call a physician if symptoms develop.
Ingestion: Rinse mouth. Drink water if conscious. Do not induce vomiting unless advised. Seek medical advice promptly.
Important Symptoms: Delayed irritation, redness, burns in severe cases.
Advice for Doctor: Treat symptomatically, supportive care following exposure.
Suitable Extinguishing Media: Water spray, dry chemical, carbon dioxide, foam.
Specific Hazards: Thermal decomposition may release fumes of nitrogen oxides, sulfur oxides, carbon monoxide, carbon dioxide.
Protection for Firefighters: Wear self-contained breathing apparatus and full protective clothing.
Special Precautions: Use water spray to cool down fire-exposed containers. Avoid inhalation of fumes.
Combustion Products: Fumes can irritate respiratory tract, toxic gases released at high temperatures.
Personal Precautions: Evacuate unnecessary personnel. Wear appropriate PPE including gloves, goggles, lab coat.
Environmental Precautions: Keep material out of drains, surface water, and soil.
Clean-up Methods: Contain and absorb with inert material (e.g., sand, earth, vermiculite). Collect in closed containers for disposal. Clean contaminated area thoroughly with water and detergent. Ventilate area.
Follow-up: Dispose of cleanup residues safely. Remove contaminated clothing promptly.
Handling: Handle in ventilated areas. Avoid direct contact with product. Prevent spills, splashes, or dust generation. Wash thoroughly after operations. Do not eat, drink, or smoke while handling.
Storage Conditions: Keep container tightly closed in a dry, cool, well-ventilated place. Protect from moisture and incompatible substances such as strong acids and oxidizers. Store away from direct sunlight and heat sources. Keep out of reach of children.
Incompatible Materials: Strong oxidizers, reducing agents, acids, bases.
Specific Storage Instructions: Label containers clearly. Use secondary containment to prevent leaks.
Engineering Controls: Work in a chemical fume hood or well-ventilated area where possible. Use local exhaust to minimize vapor or aerosol exposure.
Personal Protective Equipment (PPE): Chemical splash goggles, nitrile or neoprene gloves, lab coat or coveralls, closed footwear.
Respiratory Protection: In case of insufficient ventilation, use a half-mask respirator with adequate filters.
Hygiene Measures: Do not ingest, avoid inhaling. Wash hands and exposed skin before breaks and after use. Remove contaminated clothing immediately.
Exposure Limits: No established occupational exposure limits, but minimize exposure by using standard laboratory controls.
Appearance: Off-white to light yellow crystalline or viscous liquid
Odor: Very faint, mild aroma
Odor Threshold: Not established
pH: Neutral to slightly acidic in water
Melting Point: 65 – 95°C (variable by purity)
Boiling Point: Decomposes before boiling
Flash Point: >200°C (closed cup)
Evaporation Rate: Not determined
Flammability: Not easily flammable
Vapor Pressure: Negligible at room temperature
Vapor Density: Not determined
Solubility: Soluble in water, alcohols, polar solvents
Partition coefficient (n-octanol/water): Not available
Auto-ignition Temperature: >300°C
Decomposition Temperature: May decompose >250°C
Viscosity: Viscous at room temperature
Density: 1.1 – 1.2 g/cm³ (at 20°C)
Chemical Stability: Stable under recommended storage conditions, may decompose over time or in presence of strong acids/bases.
Reactivity: Reacts with strong oxidizing agents, strong bases, and acids. Hydrolysis can occur with long-term water exposure.
Hazardous Reactions: Violent reactions unlikely but decomposition may occur at high temperatures, producing toxic gases.
Conditions to Avoid: Excessive heat, moisture, direct sunlight, incompatible chemicals.
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, sulfur oxides, nitrogen oxides, hydrocarbons.
Acute Toxicity: Estimated LD50 (oral, rat): >2000 mg/kg (low acute toxicity). May cause mild local irritation.
Routes of Exposure: Eyes, skin, ingestion, inhalation
Symptoms: Eye and skin irritation, discomfort, gastrointestinal symptoms if ingested. Prolonged exposure may aggravate pre-existing skin disorders.
Chronic Toxicity: Limited long-term exposure data. Not classified as carcinogenic, mutagenic, or teratogenic by major health agencies.
Other Effects: Sensitization unlikely, but repeated exposure can cause dryness or dermatitis.
Medical Conditions Aggravated by Exposure: Eczema, dermatitis, other chronic skin diseases.
Ecotoxicity: Effects on aquatic life not fully studied, but release to environment should be minimized. May be harmful to aquatic organisms due to cationic nature and potential for long-term persistence.
Persistence and Degradability: Low degradability in water and soil, potential for persistence over time.
Bioaccumulation Potential: Not well-studied, probable low bioaccumulation based on ionic structure.
Mobility in Soil: High solubility allows moderate mobility; risk of groundwater contamination if large spills penetrate soil.
Other Adverse Effects: Avoid uncontrolled discharge or drain disposal.
Waste Disposal Methods: Dispose in accordance with federal, state, and local regulations. Avoid environmental release. Collect and deliver waste to accredited hazardous material handler. Do not release into sewer or surface water.
Contaminated Packaging: Empty containers retain residue and should be disposed of as fully hazardous. Clean before reuse or recycling where possible.
Special Precautions: Use secondary containment and appropriate PPE when handling waste.
UN Number: Not classified as dangerous under major international transport regulations (ADR, IMDG, IATA)
Proper Shipping Name: Not regulated
Transport Hazard Class: Not hazardous for transport
Packing Group: Not applicable
Special Precautions: During transit, keep container tightly closed. Protect from physical shocks and moisture. Follow local regulations for chemical shipments.
Environmental Hazards: Not considered a marine pollutant, but avoid large spills en route.
Labeling Requirements: Hazard labels required for laboratory and industrial use.
U.S. Regulations: Not listed on TSCA; intended for research and development use. SARA Title III—Not regulated.
European Union: Not classified as a dangerous substance under EC Regulation (EC) 1272/2008 (CLP). REACH registration not required for R&D quantities.
International Inventories: Not registered in major chemical inventories; check local and national lists before use.
Other Regulatory Notes: Lab users must comply with chemical hygiene plans; university or workplace policies may apply. Disposal and shipment must follow country-specific hazardous material rules.
