Product Name: 1-Octyl-3-Methylimidazolium Hydrogen Sulfate
Chemical Family: Ionic Liquid
CAS Number: 928790-48-7
Synonyms: OMIM HSO4
Manufacturer: [Company Name/Contact Information]
Recommended Use: Solvent, catalyst, specialty chemical application, green chemistry
Emergency Phone Number: [Supplier Emergency Line]
GHS Classification: Skin Irritation (Category 2), Eye Damage (Category 1), Acute Toxicity (Oral, Category 4)
Signal Word: Danger
Hazard Statements: Causes serious eye damage. Causes skin irritation. Harmful if swallowed.
Pictograms: Corrosive, Exclamation mark
Precautionary Statements: Wear protective gloves and eye protection. Do not eat, drink, or smoke while using. Wash hands thoroughly after handling. If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Seek immediate medical attention.
Other Hazards: May form toxic gases if burned. May be harmful to aquatic life in significant spills.
Chemical Name: 1-Octyl-3-Methylimidazolium Hydrogen Sulfate
CAS Number: 928790-48-7
Concentration: >95%
Impurities/Additives: May contain trace impurities from synthesis, not individually classified as hazardous based on available data
Molecular Formula: C12H24N2O4S
Molecular Weight: 308.40 g/mol
Inhalation: Remove person to fresh air. Seek medical attention if symptoms appear such as difficulty breathing, throat irritation, or cough.
Skin Contact: Rinse skin with plenty of water for at least 15 minutes. Remove contaminated clothing and wash before reuse. Seek medical advice if irritation develops.
Eye Contact: Rinse immediately with copious amounts of water for at least 15 minutes, lifting upper and lower eyelids occasionally. Remove contact lenses if present. Get emergency medical help.
Ingestion: Rinse mouth with water. Seek medical assistance immediately. Do not induce vomiting unless instructed by medical personnel.
Note to Physician: Treat symptomatically based on clinical judgment.
Suitable Extinguishing Media: Water spray, dry chemical, carbon dioxide, foam
Unsuitable Extinguishing Media: Avoid high-pressure water streams that may spread the material
Specific Hazards: Product can emit toxic fumes such as nitrogen oxides, sulfur oxides, carbon monoxide, imidazole derivatives if burned
Protective Equipment: Firefighters should wear full protective clothing including self-contained breathing apparatus
Firefighting Instructions: Approach from upwind, contain run-off if safe to do so, and use water spray to cool unopened containers exposed to heat
Personal Precautions: Isolate spill area; wear gloves, protective clothing, eye protection, and respirator if in a poorly ventilated environment
Environmental Precautions: Prevent spillage from entering drains, surface and groundwater
Methods for Clean-Up: Absorb with inert materials like sand or clay, place in a chemical waste container for disposal. Wash area with plenty of water following material removal. Ventilate area thoroughly.
Waste Disposal: Follow all local, state, federal guidelines as outlined below in Disposal Considerations
Handling: Avoid contact with skin and eyes. Work in a well-ventilated area or under a chemical fume hood. Wash thoroughly after handling. Do not eat, drink, or smoke in handling areas.
Storage: Keep tightly sealed in a cool, dry place. Store away from oxidizing agents and bases. Keep container upright and protected from physical damage.
Incompatible Materials: Strong bases, strong oxidizers, water-reactive substances
Storage Temperature: 2–8°C recommended; may be stored at room temperature for shorter periods if container is properly sealed
Occupational Exposure Limits: No established ACGIH or OSHA limits for this compound; minimize exposure using best industry practices
Engineering Controls: Use fume hood or adequate ventilation. Eye wash and safety shower recommended in immediate work area.
Personal Protective Equipment (PPE): Chemical-resistant gloves (nitrile recommended), safety goggles or face shield, lab coat, closed-toe shoes. Respiratory protection required if ventilation is inadequate.
Hygiene Measures: Remove contaminated clothing. Wash hands, forearms, and face after handling.
Appearance: Colorless to pale yellow viscous liquid
Odor: Mild, characteristic
Melting Point: < 20°C
Boiling Point: Decomposes, does not boil cleanly
Flash Point: >180°C (closed cup, estimated)
Solubility: Miscible with water and organic solvents
Density: 1.10–1.15 g/cm³ at 20°C
Vapor Pressure: Negligible at room temperature
pH: Slightly acidic in aqueous solution
Viscosity: High
Evaporation Rate: No data available
Partition Coefficient (log Pow): Not determined
Chemical Stability: Stable under recommended storage conditions
Incompatible Materials: Strong acids, strong bases, powerful oxidizers
Hazardous Decomposition Products: Thermal decomposition may generate carbon oxides, nitrogen oxides, sulfur oxides, imidazole vapor
Polymerization: Not anticipated to occur
Conditions to Avoid: Extreme heat, moisture, incompatible chemicals
Acute Toxicity: Oral rat LD50 (estimates) range from 300–2000 mg/kg
Skin Corrosion/Irritation: Causes redness and irritation on contact
Eye Damage/Irritation: Causes severe irritation and burns; risk of permanent eye damage
Respiratory or Skin Sensitization: No data available; may cause irritation if inhaled
Chronic Effects: Repeated or prolonged contact may cause dermatitis
Carcinogenicity: Not listed as carcinogenic by ACGIH/IARC/NTP
Target Organ Effects: Eyes, skin, gastrointestinal tract on ingestion
Aquatic Toxicity: May be harmful to aquatic organisms in large spills; estimated EC50 (Daphnia magna) > 10 mg/L
Bioaccumulation Potential: Not expected to bioaccumulate significantly
Mobility in Soil: Moderately mobile, miscible with water; can migrate to groundwater
Degradability: Not rapidly biodegradable; ionic liquids generally display moderate persistence
Other Effects: No disruption of endocrine systems reported
Waste Disposal Methods: Send waste to licensed chemical disposal facility. Burn in a chemical incinerator equipped with afterburner and scrubber if permitted. Avoid release to the environment.
Contaminated Packaging: Empty containers must be triple-rinsed and handled as hazardous waste unless tested and found to be non-hazardous.
Relevant Regulations: Disposal must follow local, regional, national, and international regulations.
UN Number: Not classified as a dangerous good for transport under ADR, RID, IMDG, or IATA
Proper Shipping Name: Not regulated
Hazard Class: Not regulated
Packing Group: Not applicable
Marine Pollutant: No
Special Precautions: Keep containers tightly closed and upright in transit; avoid exposure to incompatible substances
TSCA Status: Listed or meets the requirements for listing
REACH Status: Not fully registered; inquire for exemption status
SARA 313: Not subject to reporting under Section 313
California Prop 65: This product does not contain substances listed as cancer-causing or reproductive toxins
Additional Regulations: Comply with all applicable local, state, national, and international regulations governing chemical safety and health
Workplace Classification: Use under the guidance of qualified occupational health/safety professionals
