Chemical Name: 1-Ethyl-3-Methylimidazolium Methanesulfonate
Common Names: EMIM Methanesulfonate
Chemical Formula: C7H14N2O3S
Synonyms: EMIM MeSO3
CAS Number: 145022-44-2
Recommended Use: Solvent, electrolyte, ionic liquid in industrial and laboratory applications
Supplier: Not specified
Contact Information: Not specified
Hazard Classification: Skin irritation (Category 2), Eye irritation (Category 2A), Acute toxicity oral (Category 4)
Signal Word: Warning
Hazard Statements: Harmful if swallowed, causes skin and serious eye irritation
Pictogram(s): Exclamation mark
Precautionary Statements: Avoid breathing mist or vapor, wash hands thoroughly after handling, wear gloves/eye protection/face protection, do not eat/drink/smoke when using
Potential Health Effects: Inhalation may irritate respiratory tract; ingestion causes gastrointestinal upset; skin/eye contact causes irritation; risk of more severe symptoms with chronic exposure
Main Component: 1-Ethyl-3-Methylimidazolium Methanesulfonate
Concentration: ≥98%
Chemical Family: Ionic Liquid
Impurities: Trace organic or inorganic impurities possible from synthesis route
No additional hazardous ingredients disclosed by standard manufacturing practice
Inhalation: Move to fresh air immediately. Get medical attention if symptoms persist (coughing, dizziness, breathing difficulty).
Skin Contact: Remove contaminated clothing. Rinse skin with plenty of water for at least 15 minutes. Seek medical advice for persistent irritation.
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses if present and easy to do. Continue rinsing, obtain medical attention for eye pain or redness.
Ingestion: Rinse mouth. Do not induce vomiting unless directed by medical personnel. Seek prompt medical evaluation. Provide information about the material.
Suitable Extinguishing Media: Water spray, carbon dioxide, dry chemical powder, alcohol-resistant foam
Specific Hazards: Decomposition releases toxic fumes (nitrogen oxides, sulfur oxides, carbon oxides)
Protective Equipment: Firefighters need self-contained breathing apparatus and protective clothing
Special Procedures: Cool exposed containers with water; avoid spreading run-off; evacuate personnel from fire area.
Sensitivity: Product itself is not highly flammable, but may support combustion under extreme heat.
Personal Precautions: Evacuate unnecessary personnel. Avoid contact with skin, eyes, and clothing. Use appropriate personal protective equipment.
Environmental Precautions: Prevent release into drains, groundwater, or surface water. Notify authorities if contamination occurs.
Cleanup Methods: Contain spillage. Collect with absorbent material (vermiculite, sand), place in suitable containers for disposal. Clean residue with water and detergent.
Decontamination: Wash spill area thoroughly. Dispose of wash water properly.
Precautions: Wear protective gloves, goggles, and lab coat. Avoid breathing vapors. Handle in a well-ventilated area.
Safe Handling Advice: Do not eat, drink, or smoke while using. Wash hands after handling. Avoid generation of dust or vapor.
Storage Requirements: Store in a tightly closed, properly labeled container. Keep in a cool, dry, well-ventilated place. Do not store near incompatible substances (strong oxidizers, acids, bases). Keep away from moisture and direct sunlight.
Special Storage Instructions: Use polyethylene or glass containers where possible. Separate from food and feedstuffs.
Exposure Limits: No specific exposure limit established for this substance. Use workplace controls as needed.
Engineering Controls: Use fume hood or local exhaust for routine handling. Maintain adequate general ventilation.
Personal Protective Equipment: Wear chemical-resistant gloves (nitrile or neoprene), safety goggles, lab coat, splash apron, closed-toe footwear.
Respiratory Protection: Use well-fitted NIOSH-approved respirator if adequate ventilation is not assured or risk of inhalation exists.
Hygiene Measures: Wash hands and face before breaks and after shifting tasks. Remove contaminated clothing and wash before reuse.
Appearance: Colorless to pale yellow liquid
Odor: Odorless to weak characteristic odor
pH: 6 – 7 (aqueous solution)
Melting Point: -20°C to -15°C
Boiling Point: Decomposes before boiling
Flash Point: >200°C (closed cup)
Vapor Pressure: Negligible under standard conditions
Solubility: Miscible with water and many organic solvents
Density: ~1.28 g/cm³ at 20°C
Viscosity: Moderate to high; increases at lower temperatures
Partition Coefficient: No data available
Auto-Ignition Temperature: No data available, generally higher than 200°C
Decomposition Temperature: ~250°C
Explosive Properties: Not classified as explosive
Chemical Stability: Stable at ambient temperature and when stored properly
Incompatible Materials: Avoid strong oxidizing agents, strong acids and bases
Decomposition Products: Emits toxic fumes of CO, CO2, nitrogen and sulfur oxides during thermal decomposition
Hazardous Polymerization: Not known to occur
Reactivity: May hydrolyze over time if exposed to moisture; avoid contact with substances causing exothermic reactions
Acute Toxicity: Oral LD50 in rodents estimated to be moderate (data limited)
Skin Corrosion/Irritation: Causes irritation based on similar ionic liquids
Serious Eye Damage/Irritation: Causes significant irritation
Respiratory or Skin Sensitization: Not classified as sensitizer; repeated contact may aggravate skin
Chronic Toxicity: No chronic exposure data; precaution recommended
Carcinogenicity: Not listed by IARC, NTP, OSHA
Mutagenicity/Teratogenicity: No specific tests available
Potential Health Effects: May cause digestive discomfort through accidental ingestion; prolonged or repeated exposure increases health risk due to limited metabolic breakdown
Ecotoxicity: Aquatic toxicity not well documented; similar compounds potentially harmful to aquatic life
Persistence/Degradability: Tends to persist in environment due to low volatility and stability
Bioaccumulative Potential: Unlikely to bioaccumulate significantly based on low log Kow
Mobility in Soil: May move through soil if released, miscible with water
Other Adverse Effects: Discharge into environment should be minimized as ionic liquids can disrupt microbial processes in soil and water
Disposal Methods: Incinerate in approved chemical waste facility using suitable flue gas scrubber. Comply with local, regional, national, and international regulations.
Contaminated Containers: Triple rinse, dispose of plastic/glass containers as hazardous waste unless clean.
Prevent Entry: Avoid discharge to sewers or environment. Consult licensed chemical waste professionals for proper disposal.
UN Number: Not classified as dangerous for transport
Transport Hazard Class: Not regulated
Packing Group: Not assigned
Special Precautions: Transport in secure, sealed, labeled containers. Avoid violent movement or stacking to prevent leaks.
Transport Labels: None required under ADR/RID/IMDG/IATA as currently not classified as hazardous for carriage.
Global Inventories: Check national chemical inventories (TSCA, EINECS, ENCS, IECSC, PICCS) before import/export
SARA 313: Not listed
REACH Status: Registration status varies by supplier, always review Safety Data Sheet provided with shipment
Workplace Control: Ensure compliance with local, state, and federal occupational health regulations regarding chemical use and worker protection
Labeling: Requires hazard and precautionary statement labels upon packaging
