Product Name: 1-Ethyl-3-Methylimidazolium Methylsulfate
CAS Number: 41451-21-6
Synonyms: EMIM methyl sulfate, EMIM MeSO4
Recommended Use: Solvent for research, catalysis, electrochemistry, extraction processes
Manufacturer: Information available on supplier’s label
Emergency Phone Number: Refer to section 16 of supplier SDS for regional contacts
GHS Classification: Skin irritation (Category 2), Serious eye damage (Category 2), Acute toxicity Oral (Category 4)
Signal Word: Warning
Hazard Statements: Harmful if swallowed, Causes skin irritation, Causes serious eye irritation
Pictograms: Exclamation mark
Precautionary Statements: Avoid breathing vapors, Avoid contact with skin and eyes, Wear gloves and eye protection, Wash thoroughly after handling
Other Hazards: No information on specific combustibility risk beyond organic solvent status
Chemical Identity: 1-Ethyl-3-Methylimidazolium Methylsulfate
Concentration: >98%
Molecular Formula: C7H14N2O4S
Molecular Weight: 222.26 g/mol
Ingredient: 1-Ethyl-3-Methylimidazolium Methylsulfate
Impurities: Not expected at hazardous concentrations for standard laboratory grade
Inhalation: Move person to fresh air, provide oxygen if breathing feels difficult, seek medical attention for persistent symptoms
Skin Contact: Remove contaminated clothing immediately, flush skin with plenty of running water and mild soap, seek medical advice if irritation persists
Eye Contact: Rinse eyes gently with plenty of water for at least 15 minutes, remove contact lenses if possible, seek medical attention
Ingestion: Rinse mouth with water thoroughly, do not induce vomiting, never give anything by mouth to an unconscious person, get medical help promptly
Suitable Extinguishing Media: Water spray, dry chemical, foam, carbon dioxide
Unsuitable Extinguishing Media: Strong water jets may spread spills
Special Hazards: Container may explode under fire conditions, toxic and irritating fumes can evolve (nitrogen oxides, sulfur oxides)
Protective Equipment: Wear self-contained breathing apparatus and full protective gear
Advice for Firefighters: Approach from upwind, use water to cool containers as needed, avoid inhalation of decomposition products
Personal Precautions: Evacuate area, use personal protective equipment, avoid breathing vapors, prevent further spillage
Environmental Precautions: Keep out of drains, sewers, and waterways; soil and groundwater can be affected
Methods for Containment: Stop source of leak, contain with inert absorbent material (sand, earth, vermiculite)
Cleanup Procedures: Collect spillage into suitable, labeled non-combustible containers for disposal, ventilate area, wash site after cleanup
Other Information: Dispose of according to local, regional, national, and international regulations
Handling: Use in a chemical fume hood, avoid all contact with skin, clothing, your eyes, never inhale vapor
Storage Conditions: Keep airtight in original container, store in cool, dry, well-ventilated area away from incompatible materials, keep separate from oxidizers and strong bases or acids
Incompatible Materials: Strong oxidizing agents, strong bases, moisture-sensitive reagents
Hygiene Practices: Remove contaminated clothing and wash before reuse, always wash hands after handling
Exposure Limits: No specific occupational exposure limits established
Engineering Controls: Handle in a fume hood, emergency eye wash and safety shower should be accessible
Personal Protective Equipment: Nitrile or suitable chemical-resistant gloves, safety goggles or full face shield, lab coat, closed shoes, avoid open skin
Respiratory Protection: If ventilation is inadequate, use an approved respirator
Environmental Protection: Prevent from entering surface or groundwater, all disposal in accordance with local regulations
Appearance: Colorless to pale yellow clear liquid
Odor: Mild, none to faintly sulfurous
Odor Threshold: Not available
pH: Not determined
Melting Point/Freezing Point: Approx. -5°C
Boiling Point: Decomposes above 250°C
Flash Point: >110°C (closed cup)
Evaporation Rate: Not determined
Flammability: Not highly flammable, combustible at elevated temperature
Upper/Lower Flammability Limits: Not available
Vapor Pressure: <0.01 mmHg at 25°C
Vapor Density: Not determined
Specific Gravity/Density: 1.27 g/cm³ at 25°C
Solubility: Completely soluble in water
Partition Coefficient: Not determined
Auto-ignition Temperature: Not determined
Decomposition Temperature: Above 250°C
Viscosity: Not available
Chemical Stability: Stable at recommended storage and handling conditions
Possibility of Hazardous Reactions: Contact with strong oxidizers or bases may generate heat and toxic products
Conditions to Avoid: Exposure to moisture, high heat or ignition sources
Incompatible Materials: Oxidizers, strong acids, alkali metals, reducing agents
Hazardous Decomposition Products: Nitrogen oxides, sulfur oxides, carbon oxides, volatile organic compounds
Acute toxicity: Oral LD50 (rat) >300 mg/kg but <2000 mg/kg
Skin Corrosion/Irritation: Causes irritation, redness or dryness possible on repeated exposure
Serious Eye Damage/Irritation: Causes severe irritation, blurred vision, watering eyes
Respiratory Sensitization: No data for respiratory sensitization
Skin Sensitization: Not classified as a skin sensitizer, potential for irritation exists
Carcinogenicity: No data shows carcinogenic risk
Mutagenicity: No evidence
Reproductive Toxicity: Insufficient data, avoid unnecessary exposure
Target Organ Effects: Eyes, skin, respiratory system on high exposure
Toxicity: Harmful to aquatic life with long lasting effects, EC50 aquatic species (daphnia, fish) >1 mg/L reported in studies
Persistence and Degradability: Not rapidly biodegradable, persists in soil and water
Bioaccumulative Potential: Low, not expected to bioaccumulate significantly
Mobility in Soil: Mobile in aqueous environments
Other Adverse Effects: No known direct effects on birds or mammals at environmental concentrations
Disposal Containers: Place material in containers that remain closed and compatible with the waste
Methods of Disposal: Incinerate at approved facility, do not pour down drain or landfill without permission from authority
Waste Codes: Consult local, regionally authorized disposal codes for hazardous organic chemicals
Special Precautions: Do not contaminate ground or surface water, fully triple-rinse empty containers before disposal
UN Number: Not classified as dangerous for transport under most international transport regulations
UN Proper Shipping Name: Not regulated
Transport Hazard Class: Not classified
Packing Group: Not assigned for standard laboratory volumes
Environmental Hazards: Not a marine pollutant
Special Precautions for User: Use sealed containers, prevent leaks, carry spill kit during bulk movement
Label Requirements: Follow workplace hazard communication standards
Chemical Inventory Listings: Included in REACH, TSCA, EINECS inventories
SARA Title III Reporting: No components listed
California Proposition 65: Not listed
WHMIS Classification (Canada): D2B (toxic material causing other toxic effects)
Other Regulations: All national and international regulations for hazardous chemical storage, transport, use, and disposal apply; always review the most current guidance from chemical regulatory organizations
