Product Name: 1-Butyl-2,3-Dimethylimidazolium Hydrogen Sulfate
Chemical Formula: C9H18N2O4S
Synonyms: BMIM HSO4, Ionic Liquid
CAS Number: 262297-13-2
Recommended Use: Solvent, catalyst in organic synthesis, electrochemistry
Supplier Information: Manufacturer or distributor details provided on packaging label
Emergency Contact: Refer to local regulatory authority or CHEMTREC
GHS Classification: Acute toxicity (oral), Category 4; Eye irritation, Category 2A; Skin irritation, Category 2
Pictogram: Exclamation mark
Signal Word: Warning
Hazard Statements: Harmful if swallowed; Causes skin irritation; Causes serious eye irritation
Precautionary Statements: Avoid breathing dust/fume/gas/mist/vapors/spray; Wash thoroughly after handling; Wear protective gloves, protective clothing, eye protection, face protection
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Target Organs: Skin, eyes, gastrointestinal tract
Potential Health Effects: Irritation to respiratory tract, skin, eyes, digestive disturbances if ingested
Chemical Name: 1-Butyl-2,3-Dimethylimidazolium Hydrogen Sulfate
CAS Number: 262297-13-2
Concentration: ≥ 98% by weight
Hazardous Components: No major impurities expected
Impurities: Trace water, organic byproducts less than 1.0%, not classified as hazardous
If Inhaled: Remove victim to fresh air. Seek medical attention if symptoms persist.
Skin Contact: Wash skin with plenty of water and soap for at least 15 minutes. Remove contaminated clothing. Get medical help if irritation occurs.
Eye Contact: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Get medical attention if redness or pain persists.
If Swallowed: Rinse mouth thoroughly with water. Do not induce vomiting. Seek medical advice and present this sheet.
Main Symptoms and Effects: Burning sensation, redness, coughing, stomach upset, headache, dizziness in severe exposure cases
Suitable Extinguishing Media: Water spray, carbon dioxide, dry chemical, foam
Unsuitable Extinguishing Media: High volume water jet may scatter material
Special Hazards: Combustion yields toxic fumes including nitrogen oxides, sulfur oxides, carbon oxides
Protective Equipment: Firefighters wear self-contained breathing apparatus and full protective gear
Advice to Firefighters: Move containers away from fire area if safe. Cool with water spray. Prevent firewater runoff from entering drains.
Personal Precautions: Wear suitable protective clothing, gloves, goggles, face shield. Avoid contact with skin, eyes, and clothing.
Environmental Precautions: Contain spill to prevent entry into soil, drains, sewers, water bodies. Inform authorities if material has entered environment.
Methods for Cleanup: Absorb spillage with inert material (sand, earth, diatomaceous earth). Place in suitable container for disposal. Wash spill area with water.
Handling: Use only with adequate ventilation. Minimize dust, vapor, and mist formation. Do not eat, drink, or smoke during use.
Hygiene: Wash hands, forearms, and face thoroughly after handling. Remove contaminated clothing.
Storage Conditions: Store in tightly closed container in a cool, dry, well-ventilated area away from heat, ignition sources, incompatible substances.
Incompatible Materials: Strong oxidizers, strong bases, moisture, materials with reactive metals
Storage Temperature: Ambient (15–25°C)
Occupational Exposure Limits: No established exposure limits for this compound
Engineering Controls: Local exhaust ventilation, safety shower, eyewash station in the area
Personal Protection:
- Eye/Face Protection: Chemical safety goggles, face shield
- Skin Protection: Wear suitable gloves (nitrile rubber recommended), lab coat
- Body Protection: Protective clothing to minimize skin contact
- Respiratory Protection: Use appropriate respirator when ventilation is inadequate
Environmental Controls: Prevent product from entering drains and environment
Appearance: Colorless to pale yellow liquid or solid, highly viscous
Odor: Weak, characteristic ammoniacal odor
Odor Threshold: Not determined
pH: Acidic (pH < 2 in aqueous solution)
Melting Point/Freezing Point: 25–38°C
Boiling Point: Decomposes before boiling
Flash Point: > 100°C
Evaporation Rate: Not applicable
Flammability: Not easily flammable under normal conditions
Vapor Pressure: Negligible
Vapor Density: Not available
Relative Density: 1.16 to 1.22 (25°C)
Solubility: Miscible with water, soluble in polar organic solvents
Partition Coefficient n-octanol/water: Not determined
Auto-ignition Temperature: > 200°C
Decomposition Temperature: 220–250°C
Viscosity: High; > 100 cP at 25°C
Chemical Stability: Stable under recommended storage conditions
Reactivity: No dangerous reactions known under normal use
Conditions to Avoid: Heat, flames, sparks, moisture
Incompatible Materials: Strong oxidizing agents, strong bases, reactive metals (sodium, potassium)
Hazardous Decomposition Products: Toxic fumes of nitrogen oxides, sulfur oxides, carbon monoxide, carbon dioxide
Polymerization: Product does not undergo hazardous polymerization
Acute Toxicity - Oral: Harmful if swallowed (rat LD50 estimated 950-1200 mg/kg)
Acute Toxicity - Dermal: Limited data, low acute toxicity expected
Acute Toxicity - Inhalation: No significant vapor hazard at room temperature
Skin Corrosion/Irritation: Causes moderate skin irritation on contact
Eye Damage/Irritation: Causes serious eye irritation in direct exposure
Respiratory Sensitization: Not classified; avoid inhaling mists
Skin Sensitization: Not classified
Chronic Toxicity: Not identified; no long-term studies available
Carcinogenicity: Not listed as carcinogen by IARC, NTP, OSHA
Mutagenicity: No data available
Reproductive Toxicity: No data available
Other Effects: Prolonged skin exposure may cause dermatitis. Accidental ingestion may lead to gastrointestinal symptoms (nausea, vomiting, distress).
Aquatic Toxicity: Harmful to aquatic life with long lasting effects (EC50 > 10 mg/L Daphnia magna, 48 hr)
Persistence and Degradability: Ionic liquids show low biodegradability under standard conditions
Bioaccumulation Potential: Low predicted based on chemical properties
Mobility in Soil: Readily migrates in water-rich soils due to high solubility
Other Adverse Effects: May change pH of aquatic environments; not classified as PBT or vPvB under REACH legislation
Disposal Methods: Dispose of contents/container to a licensed hazardous waste disposal facility
Waste Code: As assigned by local legislation
Product Disposal: Do not release into drains, surface water or soil. Treat as hazardous chemical waste.
Contaminated Packaging: Rinse with water and dispose of as hazardous waste.
Special Precautions: Consult local, regional, and national authorities for proper disposal requirements
UN Number: Not regulated as hazardous for air, sea, or road transport
Proper Shipping Name: Not applicable
Transport Hazard Class: Not applicable
Packing Group: Not applicable
Environmental Hazards: Not classed as marine pollutant
Special Precautions for User: Use leak-proof packaging, keep upright, and prevent spillage during transport.
Transportation in Bulk: Not subject to MARPOL Annex II or IBC Code regulations
Safety, Health, and Environmental Regulations: Not listed under US TSCA, Canadian DSL, or EU REACH.
Hazard Symbols: GHS07 (Exclamation Mark)
Signal Word: Warning
Risk Phrases: Harmful by ingestion, irritating to skin, risk of serious eye damage
SARA Title III: Not regulated
California Proposition 65: Not listed
Precautionary Notes: Follow local regulations and best lab practices for storage, handling, use, and disposal.
Other Regulatory Information: Ensure up-to-date compliance with OSHA, WHMIS, EU CLP regulations as applicable for workplace safety.
