Product Name: 1-Pentyl-3-Methylimidazolium Toluenesulfonate
Synonyms: [C5mim][OTs]; 1-Pentyl-3-methylimidazolium p-toluenesulfonate
Chemical Family: Ionic Liquid
CAS Number: 96755-68-1
Recommended Use: Laboratory solvents, catalysis carrier, chemical research
Supplier Information: Contact manufacturer for details on emergency contact number and address
GHS Classification: Skin irritation - Category 2; Eye irritation - Category 2A
Signal Word: Warning
Hazard Statements: Causes skin irritation; Causes serious eye irritation; May be harmful if swallowed
Pictograms: Exclamation mark
Precautionary Statements: Avoid contact with skin and eyes; Wash thoroughly after handling; Wear eye and face protection
Potential Health Effects: Prolonged exposure may lead to reddening of skin, discomfort in eyes, and stomach upset if ingested
Environmental Hazards: Avoid release to aquatic environments; potential for toxicity in water organisms
Chemical Name: 1-Pentyl-3-Methylimidazolium Toluenesulfonate
Molecular Formula: C15H24N2O3S
Concentration: ≥97%
Impurities: Water (<2%); Minor organic impurities (<1%)
Other Ingredients: None reported
Eye Contact: Rinse gently with clean water for at least 15 minutes, remove contact lenses if present and easy; seek medical attention if irritation persists or vision changes
Skin Contact: Wash gently with soap and water for at least 15 minutes; remove contaminated clothing; seek help if discomfort or redness continues
Inhalation: Move to fresh air, support breathing, seek guidance if persistent cough, headache, or dizziness occurs
Ingestion: Rinse mouth with water, give small amount of water if victim is conscious; avoid inducing vomiting; medical assessment is needed for large amounts
Other Advice: Show this safety data sheet to the healthcare provider
Suitable Extinguishing Media: Dry chemical, carbon dioxide, alcohol-resistant foam; use water spray only to cool unopened containers
Specific Hazards: May release toxic fumes such as nitrogen oxides, sulfur oxides, carbon monoxide, and carbon dioxide
Special Protective Equipment: Wear self-contained breathing apparatus and full protective gear
Firefighting Instructions: Fight fire from upwind, prevent runoff to drains, use water spray to cool containers
Personal Precautions: Wear eye protection, impervious gloves, and lab coat; avoid breathing dust or vapor; ensure adequate ventilation
Spill Cleanup: Absorb spill with inert solid such as vermiculite or sand; shovel into closed container for safe disposal; wipe small spills with damp cloth
Environmental Precautions: Prevent further leakage or spillage; keep away from drains, surface water, and soil
Methods for Cleaning Up: Wash area with water after material pickup is complete
Handling: Use in chemical fume hood; handle with care to avoid splashes and spills; do not eat, drink, or smoke near material
Storage Conditions: Store tightly closed in a cool, dry, well-ventilated place; segregate from strong acids, strong bases, and strong oxidizing agents; keep away from moisture
Incompatible Materials: Strong oxidizers, reducing agents, reactive metals
Storage Temperature: 2–8°C recommended
Exposure Limits: Not established by OSHA, NIOSH, or ACGIH
Engineering Controls: Operate in chemical fume hood or well-ventilated area
Personal Protective Equipment: Nitrile gloves, chemical splash goggles, lab coat
Hygiene Measures: Wash hands and face before breaks and after handling; do not touch face or eyes while handling
Respiratory Protection: Wear respirator if risk of inhaling fumes or dust
Appearance: Pale yellow to colorless liquid or solid (depends on temperature)
Odor: Faint, slightly aromatic
pH: 5–7 (10% solution)
Melting Point: Range 30–45°C
Boiling Point: Decomposes before boiling
Flash Point: >100°C (closed cup estimate)
Solubility: Highly soluble in water, ethanol, and other polar solvents
Vapor Pressure: Negligible at room temperature
Density: Approx. 1.13–1.17 g/cm3 at 20°C
Partition Coefficient: Not determined
Viscosity: High (varies with temperature)
Chemical Stability: Stable under recommended conditions
Hazardous Reactions: Violent reaction with strong oxidizers
Decomposition Products: Releases toxic fumes of nitrogen oxides, sulfur oxides, and hydrocarbons on strong heating or fire
Conditions to Avoid: Excessive heat, contact with oxidizing agents, moisture over time
Routes of Exposure: Inhalation, skin contact, eye contact, ingestion
Acute Toxicity: Oral LD50 (rat): not available; for similar ionic liquids, low to moderate toxicity
Skin Corrosion/Irritation: Irritating to skin
Eye Damage/Irritation: Causes eye irritation, potential for transient corneal injury
Respiratory Sensitization: May cause cough or discomfort if vapor or mist inhaled
Chronic Effects: Long-term effects not thoroughly studied; ionic liquids can sometimes cause liver or kidney changes in persistent, high exposures
Carcinogenicity: No ingredients identified as carcinogenic by NTP, IARC, OSHA
Other Effects: Data lacking for targeted organ toxicity; monitor for allergic responses or prolonged irritation
Ecotoxicity: May be toxic to aquatic organisms at high concentration; ionic liquids sometimes persist in water and soil
Mobility: Expected to be mobile in water; can leach through soil
Persistence and Degradability: Limited data, but imidazolium compounds can show slow biodegradation
Bioaccumulation: Low to moderate potential according to studies of similar chemicals
Other Adverse Effects: Avoid discharge into environment; impact on microorganisms and long-term ecosystem balance remains a concern
Waste Treatment Methods: Dispose of contents/container in accordance with local/regional/national/international regulations
Incineration: Preferred method, in compliance with environmental agency standards
Packaging Disposal: Rinse empty containers before discarding; avoid reusing for food or beverage storage
Spill Waste: Absorbed materials and cloths must go in sealed hazardous waste containers
UN Number: Not regulated as dangerous goods for transport
Transport Hazard Class: Not assigned
Packing Group: Not assigned
Environmental Hazards: Keep away from drains, curb leaks and spills to prevent runoff to water courses
Special Precautions: Secure during transport; keep containers upright and closed
TSCA: May not be listed in all regions; check local chemical inventories
SARA Title III: Not subject to reporting under Sections 302, 304, 313
California Prop 65: Not listed
REACH Status: Subject to registration and reporting in the EU
Other Regulations: End users should reference national and regional regulation for chemical safety, transportation, and disposal requirements
