Product Name: 1,3-Dimethylimidazolium Methanesulfonate
Chemical Family: Ionic Liquid
Molecular Formula: C6H11N2O3S
Synonyms: DMIM MeSO3, 1,3-Dimethylimidazolium methylsulfonate
CAS Number: 516474-01-2
Supplier Contact: Emergency contact and details provided by the manufacturer or supplier. Ensure contact details remain updated for straightforward communication.
Recommended Use: Commonly used in advanced materials labs, as a solvent and catalyst carrier.
Restrictions: Keep use within regulated labs or professionally supervised environments.
GHS Classification: Eye irritation Category 2A, Skin irritation Category 2
Label Elements: Warning symbol of an exclamation mark signifying moderate hazard risk
Hazard Statements: Causes skin irritation, causes serious eye irritation, potential for irritation of respiratory tract after inhalation
Precautionary Statements: Wash skin thoroughly after handling. Wear protective gloves, clothing, and eye/face protection. In case of contact with eyes, rinse with water for several minutes.
Other Hazards: Prolonged or repeated exposure may increase risk of dermatitis. No acute toxicity by oral, dermal, or inhalation under typical lab conditions, but always monitor for allergic reactions or respiratory symptoms.
Chemical Name: 1,3-Dimethylimidazolium Methanesulfonate
Concentration: >98%
Impurities: Trace process impurities & water content < 0.5% by weight
Component: C6H11N2O3S (single component substance, no mixtures)
CAS: 516474-01-2
Inhalation: Remove individual to fresh air. Provide oxygen if breathing is difficult, seek medical attention for persistent symptoms.
Skin Contact: Wash with plenty of soap and water for several minutes. Remove contaminated clothing and launder before re-use. Seek medical advice for persistent irritation.
Eye Contact: Rinse eyes cautiously with water for 15-20 minutes, lifting eyelids occasionally. Remove contact lenses if present and continue rinsing. Seek medical help if irritation persists.
Ingestion: Rinse mouth. Do not induce vomiting without medical advice. Call a physician if any discomfort occurs.
Most Important Symptoms: Eye and skin redness, stinging sensation, dryness, possible cough if inhaled.
Advice to Physicians: Treat symptomatically with attention to mucous membrane irritation and skin decontamination.
Suitable Extinguishing Media: Use water spray, alcohol-resistant foam, dry chemical, or carbon dioxide for extinguishing.
Unsuitable Media: Do not use direct water stream as it may spread chemical.
Fire Hazards: Product does not ignite easily but thermal decomposition can form irritating vapors including sulfur oxides, nitrogen oxides, carbon monoxide, carbon dioxide.
Protective Equipment: Firefighters need self-contained breathing apparatus and full protective clothing.
Special Procedures: Cool containers with water spray to prevent overheating. Avoid inhalation of vapors or combustion byproducts.
Personal Protection: Use gloves, chemical splash goggles, protective clothing. Avoid dust formation or inhalation of vapors.
Spill Cleanup Methods: Absorb with inert material (e.g., dry sand), place in waste container for disposal. Rinse spill area with water after removal.
Environmental Precautions: Prevent entry into drains, surface water, or soil. Notify environmental authorities in case of significant spill.
Decontamination: Wash area with plenty of water and detergent. Dispose of contaminated materials as chemical waste following local regulations.
Handling: Wear protective gloves, safety goggles, and lab coat. Ensure adequate ventilation, especially during handling. Keep containers tightly closed.
Storage Conditions: Store in cool, dry, well-ventilated area away from direct sunlight and sources of ignition. Recommend keeping away from strong acids or bases.
Incompatible Materials: Acid chlorides, oxidizing agents, and reducing agents may react with the product.
Technical Measures: Avoid formation of aerosols or dust. Keep away from incompatible substances.
Storage Class: Chemical storage for corrosive liquids.
Exposure Limits: No established occupational exposure limits found in major regulatory sources.
Engineering Controls: Work in a chemical fume hood or ensure local exhaust ventilation at points of generation.
Personal Protection: Wear chemical-resistant gloves (e.g., nitrile), long-sleeved lab coat, chemical splash goggles. Use respiratory protection when high airborne concentrations might occur.
Hygiene Measures: Avoid contact with skin, eyes, and clothing. Wash hands before breaks and after handling the product.
Environmental Controls: Avoid discharge to drains or environment without treatment.
Appearance: Colorless to pale yellow liquid (may solidify at low temperature)
Odor: Slight, not distinctive or strong
pH: Neutral to mildly acidic in aqueous solution
Melting Point: 20–35°C (may oscillate based on purity)
Boiling Point: Decomposes before boiling
Flash Point: >150°C
Solubility: Fully miscible with water; compatible with polar organic solvents
Density: About 1.22 g/cm³ at 25°C
Vapor Pressure: Negligible at ambient conditions
Partition Coefficient (log Kow): Not measured, assumed low bioaccumulation potential
Evaporation Rate: Not volatile under use conditions
Explosive Properties: Not explosive, no evidence of self-ignition.
Chemical Stability: Stable at room temperature under recommended handling and storage.
Reactivity: Not readily reactive, but decomposes at elevated temperature or strong reaction conditions.
Possible Hazardous Reactions: Contact with strong oxidizers or acids may produce hazardous gases.
Conditions to Avoid: Contact with moisture, overexposure to air, long-term heat exposure.
Incompatible Materials: Acid chlorides, oxidizing/reducing agents, strong bases.
Decomposition Products: Methanesulfonic acid, imidazoles, nitrogen oxides, sulfur oxides, carbon oxides.
Acute Toxicity: Low acute oral, dermal, and inhalation toxicity based on condensed scientific data. Self-limited minor irritation commonly reported from accidental exposure.
Skin Corrosion/Irritation: May cause skin irritation upon contact; symptoms include redness and dryness.
Serious Eye Damage/Irritation: Moderate to severe eye irritation expected. Immediate and copious rinse recommended after exposure.
Respiratory or Skin Sensitization: Low risk for sensitization, but people with history of skin allergies might need extra caution.
Chronic Toxicity: No evidence of long-term health risks under regulated lab use, but minimize regular exposure.
Carcinogenicity/Mutagenicity/Reprotoxicity: Not classified by major health agencies as a known or probable carcinogen, mutagen, or reproductive toxin.
Other Effects: In rare cases, dizziness, respiratory tract irritation, nausea reported after high-level exposure.
Aquatic Toxicity: No evidence for acute aquatic toxicity, but avoid release to water systems.
Persistence and Degradability: Biodegradation data remains limited; slowly broken down in soil and water.
Bioaccumulative Potential: Not expected to bioaccumulate based on water solubility and chemical structure.
Mobility in Soil: Likely to partition into water phase, not expected to adhere strongly to soil matrix.
Other Adverse Effects: Take steps to restrict environmental contamination until more robust studies on ecological effects become available.
Methods of Disposal: Collect liquid waste in clearly labeled containers. Follow institutional chemical waste disposal procedures.
Contaminated Packaging: Triple rinse, deface labels, then dispose according to local regulatory requirements.
Environmental Precautions: Never pour down the drain or release into the environment. Instruct waste handlers about content and hazards.
Waste Treatment Options: Incineration at a chemical waste facility remains preferred; neutralization only with approval of safety officer.
Disposal Code: Consult local and national regulations for classification codes and further requirements.
UN Number: Not regulated under major international transport schemes for routine amounts in non-bulk packaging.
UN Proper Shipping Name: Not applicable unless shipping in bulk or by air—then confirm status with local regulations.
Transport Hazard Class: Not classified as dangerous.
Packing Group: Not applicable.
Marine Pollutant: Not a marine pollutant.
Special Precautions: Protect containers from damage. During transit, seal securely and prevent leaks.
OSHA Status: Not specifically listed. Handle with general chemical safety protocols as outlined by OSHA.
TSCA: Chemical inventory status allows for handling under research and development conditions.
SARA/Title III: No components listed under SARA 313 or designated as extremely hazardous.
REACH Status: Subject to registration if imported into European Union above threshold levels.
Other International Regulations: Not regulated as a controlled substance; always check updated chemical lists in your region.
Label Requirements: Provide hazard communication per local employee right-to-know rules.
Workplace Exposure: Advise full compliance with institutional chemical hygiene plans and training.
