Material Safety Data Sheet: 1-Butyl-2,3-Dimethylimidazolium Toluenesulfonate

Identification

Product Name: 1-Butyl-2,3-Dimethylimidazolium Toluenesulfonate
Chemical Formula: C15H24N2O3S
Synonyms: BMIM-Ts, Ionic Liquid, Butyl-Dimethylimidazolium Para-Toluenesulfonate
Recommended Use: Laboratory chemicals, manufacturing auxiliary, research application in organic synthesis
Manufacturer: [Company Contact Information]
Emergency Contact: [Emergency Phone Number]
CAS Number: 876474-92-9

Hazard Identification

Classification (GHS): Eye Irritation Category 2, Skin Irritation Category 3, Specific Target Organ Toxicity (Single Exposure) Category 3
Pictograms: Exclamation Mark
Signal Word: Warning
Hazard Statements: Causes moderate eye irritation, may cause slight skin irritation, may cause drowsiness or dizziness
Precautionary Statements: Wear protective gloves, avoid breathing vapor, avoid contact with eyes and skin, wash thoroughly after handling
Potential Health Effects: Eyes may sting or water after exposure; skin contact may result in mild irritation; inhalation could cause coughing, headache, or lightheadedness

Composition / Information on Ingredients

Substance: 1-Butyl-2,3-Dimethylimidazolium Toluenesulfonate
Concentration: ≥98% by weight
Impurities: Water (≤1%), Organic solvents (trace), Residual intermediates (≤0.5%)
Other Components: Not present in significant amounts for classification

First Aid Measures

Inhalation: Take the person outdoors to fresh air, keep at rest, consult medical attention for persistent symptoms such as coughing or dizziness
Skin Contact: Remove contaminated clothing, rinse thoroughly with soap and water, seek medical advice for redness or discomfort
Eye Contact: Rinse cautiously with lukewarm water for at least 15 minutes, lift eyelids occasionally, get medical help immediately if irritation continues
Ingestion: Rinse mouth, drink water, never induce vomiting, call a doctor or poison center right away
Notes to Physician: Symptomatic and supportive care recommended

Fire-Fighting Measures

Suitable Extinguishing Media: Dry chemical, CO2, foam, water spray
Unsuitable Extinguishing Media: High-pressure water jets may spread material
Specific Hazards: Emits toxic fumes of nitrogen oxides, sulfur oxides, and carbon oxides under fire
Protective Equipment: Firefighters should wear self-contained breathing apparatus and full protective clothing
Special Procedures: Keep unnecessary people away, cool exposed containers with water spray

Accidental Release Measures

Personal Precautions: Wear suitable protective clothing, avoid inhalation, ventilate area
Environmental Precautions: Avoid discharge into drains, surface water, soil
Spill Response: Absorb with sand or inert material, collect in suitable container for disposal, decontaminate spill area
Clean-Up Methods: Wash area clean with water and detergent after material picked up

Handling and Storage

Handling: Work in ventilated spaces, avoid direct contact, do not breathe vapor or mist, keep containers closed after use
Storage: Store in cool, dry area in tightly sealed containers, keep away from heat, strong acids, oxidizing reagents
Incompatible Materials: Strong bases, oxidizers, strong acids
Hygiene Practices: Wash hands before eating, drinking, or smoking after handling

Exposure Controls and Personal Protection

Exposure Limits: No specific regulatory exposure limit available; follow best industrial hygiene practices
Engineering Controls: Use local exhaust, chemical fume hood, or ventilation to minimize exposure
Respiratory Protection: Use approved respirators if exposure risk exists especially during large-scale handling or spills
Skin Protection: Wear chemical-resistant gloves, lab coat, protective footwear
Eye Protection: Use safety goggles or face shield
General Protection: Do not eat, drink, or smoke in work area, wash up after handling

Physical and Chemical Properties

Appearance: Colorless to pale yellow liquid or crystalline solid depending on temperature
Odor: Faint, may resemble aromatic hydrocarbon
Odor Threshold: Not established
pH: Not readily available
Melting Point: 55 – 60°C
Boiling Point: Decomposes before boiling
Flash Point: >180°C (closed cup method)
Evaporation Rate: Not established
Flammability: Not easily flammable under normal conditions
Vapor Pressure: Negligible at room temperature
Vapor Density: Not established
Density: 1.14 – 1.19 g/cm³ at 20°C
Solubility: Highly soluble in water and many organic solvents
Partition Coefficient: Not determined
Auto-Ignition Temperature: Not established
Decomposition Temperature: >200°C
Viscosity: Moderate, liquid at laboratory conditions

Stability and Reactivity

Chemical Stability: Stable at room temperature under recommended storage conditions
Conditions to Avoid: Heating above 200°C, contact with moisture, incompatible materials
Incompatible Materials: Strong oxidizing agents, strong acids, alkali, peroxides
Hazardous Decomposition Products: Emits carbon oxides, nitrogen oxides, sulfur oxides under thermal decomposition
Polymerization: Will not occur under normal handling

Toxicological Information

Acute Toxicity: Low toxicity by oral, dermal, or inhalation routes; estimated oral LD50 >2000 mg/kg (rat data, analogous substances)
Skin Corrosion/Irritation: May cause mild to moderate irritation after repeated exposure
Eye Damage/Irritation: Moderate irritant, risk increases with concentration and exposure time
Respiratory Sensitization: Prolonged inhalation could irritate airways
Sensitization: Not expected based on available data
Mutagenicity and Carcinogenicity: Data not conclusive, no known significant health effects
Chronic Toxicity: No chronic data available; repeated exposure may lead to skin dryness
Other Data: No studies show reproductive or developmental toxicity

Ecological Information

Ecotoxicity: Low to moderate toxicity for aquatic life (estimated EC50 for daphnia ~10-100 mg/L)
Persistence and Degradability: Not readily biodegradable in the environment
Bioaccumulative Potential: Low, not likely to accumulate in organisms
Mobility in Soil: May migrate through soil due to water solubility
Other Adverse Effects: Avoid uncontrolled release; long-term effects unknown for many species

Disposal Considerations

Waste Disposal: Dispose of in accordance with local, regional, and national regulations for hazardous material
Methods: Use chemical incineration with afterburner and scrubber, or licensed hazardous waste facility
Contaminated Packaging: Triple rinse and send to approved drum recycler; do not reuse
Precautions: Never discharge into surface water, sewer systems, or soil

Transport Information

UN Number: Not regulated as dangerous for transport
Proper Shipping Name: Not classified as hazardous
Transport Hazard Class: Not assigned
Packing Group: Not required
Marine Pollutant: Not designated
Special Precautions: Handle to prevent container damage, keep upright in shipment

Regulatory Information

Global Inventories: Listed or complies with key international inventories (REACH, TSCA, DSL)
SARA Title III: Not subject to reporting thresholds
California Proposition 65: Not listed
Workplace Classification: Handle as a hazardous chemical in workplace settings
Labeling: Complies with GHS and OSHA Hazard Communication standards