Product Name: 1-Hydroxyethyl-3-Methylimidazolium Hydrogen Sulfate
Chemical Formula: C6H12N2O4S
CAS Number: 262297-13-8
Synonyms: [HEMIM]HSO4, Ionic liquid, Imidazolium compound
Recommended Use: Solvent, catalyst in organic synthesis, electrolyte in batteries
Supplier Details: Manufacturer address, email, and emergency phone number
Emergency Contact: CHEMTREC: 1-800-424-9300 (for US and international incidents)
Classification: Acute toxicity (oral, dermal, inhalation), skin and eye irritant
Pictogram(s): Exclamation mark, corrosive symbol
Signal Word: Danger
Hazard Statements: May cause skin and eye irritation, harmful if swallowed, may damage mucous membranes
Precautionary Statements: Wear protective gloves and goggles, avoid breathing dust or vapors, wash hands after handling, keep away from food and drinks
Routes of Exposure: Inhalation, skin, eyes, ingestion
Target Organs: Eyes, skin, respiratory tract
Chemical Name: 1-Hydroxyethyl-3-Methylimidazolium Hydrogen Sulfate
Concentration: 100% w/w
Common Impurities: Moisture content may vary, trace imidazole derivatives
Ingredient Disclosure: Contains no recognized carcinogens, mutagens, or reproductive toxins
Molecular Weight: 208.24 g/mol
Inhalation: Move affected person to fresh air, loosen tight clothing, seek medical attention if symptoms persist or worsen such as coughing, wheezing, breathing difficulty.
Skin Contact: Remove contaminated clothing, rinse skin immediately with water for several minutes, use soap if easily available, contact physician for symptoms like persistent redness or blisters.
Eye Contact: Rinse eyes cautiously with water for 15 minutes, remove contact lenses if present after initial rinsing, monitor for irritation, blurred vision, or pain, get medical help.
Ingestion: Do not induce vomiting, rinse mouth thoroughly with water, seek immediate professional medical care, note signs of nausea, abdominal pain, drowsiness.
Medical Attention: Show this MSDS to emergency responders or doctors to assist with treatment decisions.
Suitable Extinguishing Media: Dry chemical, CO2, alcohol-resistant foam, water spray, avoid direct water jets.
Fire Hazards: Substance may produce toxic or irritating fumes under combustion including SOx, NOx, carbon monoxide, and imidazole derivatives.
Special Protective Equipment for Firefighters: Full protective clothing, self-contained breathing apparatus (SCBA).
Specific Methods: Cool containers with water mist to prevent pressure buildup, control runoff to prevent environmental contamination.
Hazardous Combustion Products: Sulfur oxides, nitrogen oxides, imidazole vapors, carbon monoxide, carbon dioxide.
Explosion Data: Not known to be explosive, product not sensitive to mechanical impact or static discharge under normal storage conditions, always consider presence of oxidizers.
Personal Precautions: Evacuate unnecessary personnel from area, use personal protective equipment—gloves, goggles, lab coat, respirator if exposure limits exceeded.
Environmental Precautions: Prevent entry into watercourses, sewers, or drains, in case of large spillage, notify authorities.
Methods for Cleanup: Absorb with inert material (sand, vermiculite), collect into containers for disposal, ventilate contaminated area well, flush with water after removal of residue.
Protective Equipment: Chemical resistant gloves, splash protection for eyes, appropriate NIOSH-approved respiratory protection if dust or mist forms.
Containment: Use spill containment barriers, minimize dust generation.
Safe Handling: Handle in ventilated area, avoid creating aerosols or dust, avoid contact with eyes and skin, always wash hands after work, keep containers tightly closed when not in use.
Storage Requirements: Store below 25°C in dry, well-ventilated space, away from incompatible substances like oxidizing agents and strong bases.
Storage Containers: Use corrosion-resistant materials (glass, polyethylene), label clearly with product identity and hazard warnings.
Special Considerations: Avoid contact with moisture, keep away from food, beverages, and feed materials.
Incompatible Materials: Strong oxidizers, alkali metals, moisture, bases.
Exposure Limits: No occupational exposure limits established for this compound, minimize exposure as a precaution.
Engineering Controls: Use local exhaust or general room ventilation, emergency eye wash stations and safety showers nearby.
Personal Protective Equipment: Safety goggles or face shields, chemical-resistant gloves (nitrile or butyl), lab coats or aprons, NIOSH/MSHA approved respirators for prolonged or high-exposure work.
Hygiene Measures: Do not eat, drink, or smoke in work areas, remove clothing immediately if contaminated, launder before reuse.
Environmental Controls: Keep emissions to air and water as low as technically feasible and permitted by regulations.
Appearance: Viscous, colorless to pale yellow liquid
Odor: Slightly sharp, sulfurous odor
Odor Threshold: Not established
pH: Acidic, typically around 1–2 (10% aqueous solution)
Melting Point/Freezing Point: Around 30°C
Initial Boiling Point/Range: Decomposes before boiling, decomposition above 180°C
Flash Point: Not established (non-flammable under standard conditions)
Evaporation Rate: Slow
Flammability: Not readily flammable, classified as non-combustible
Upper/Lower Flammability Limits: Not applicable
Vapor Pressure: Negligible
Vapor Density: Not determined
Relative Density: Around 1.2–1.3 g/cm³ (20°C)
Solubility: Readily soluble in water, miscible with many organic solvents
Partition Coefficient (n-octanol/water): Not available
Autoignition Temperature: Not self-igniting
Decomposition Temperature: Above 180°C
Viscosity: High viscosity, approximately 200–400 cP (25°C)
Chemical Stability: Stable when stored in original sealed containers, under dry, ambient conditions.
Reactivity: May react with strong oxidizers and strong bases, can hydrolyze if exposed to water over prolonged time.
Hazardous Reactions: Releases sulfur oxides and imidazole vapors on decomposition, incompatible with strong oxidizers.
Conditions to Avoid: Moist air, elevated temperatures, direct sunlight, sources of ignition.
Incompatible Materials: Oxidants, alkalis, water (long term exposure)
Hazardous Decomposition Products: Sulfur dioxide, nitrogen oxides, imidazole derivatives, carbon oxides.
Routes of Exposure: Inhalation, skin, eyes, ingestion
Acute Toxicity: Harmful if swallowed (estimated oral LD50 > 500 mg/kg rat), moderate irritant to eyes, skin, mucous membranes
Skin Corrosion/Irritation: Causes skin irritation, possible burns after prolonged exposure
Eye Damage/Irritation: Causes significant irritation, may result in burns or long-term eye damage if contact persists
Sensitization: Prolonged or repeated skin exposure could trigger allergic reactions in sensitive individuals
Chronic Effects: No evidence of carcinogenicity, mutagenicity, or reproductive toxicity expected based on available data
Target Organ Effects: Eyes, skin, respiratory system
Symptoms: Redness, rash, tearing, coughing, sore throat, dizziness or nausea after accidental ingestion.
Ecotoxicity: Toxic to aquatic organisms, especially invertebrates; may cause long-term adverse effects in aquatic environments due to slow biodegradation.
Persistence and Degradability: Substance degrades slowly under environmental conditions, stable in soil and water.
Bioaccumulative Potential: No significant bioaccumulation expected as it is highly soluble and metabolized.
Mobility in Soil: Highly mobile, may leach into groundwater if spilled.
Other Adverse Effects: Raising ionic strength in water, can change soil chemistry, disrupt microbial life; not volatile so unlikely to impact air quality directly.
Waste Treatment Methods: Dispose of chemical waste and contaminated packaging as hazardous waste according to local, state, and national regulations.
Preferred Disposal: Incineration in a licensed facility with flue-gas cleaning, prevent release into sewer systems.
Packaging Disposal: Triple rinse containers before recycling or disposal, handle as chemical waste.
Special Precautions: Do not allow product to reach surface water, drains, or ground water.
Regulatory Codes: Refer to local environmental protection authority guidelines for disposal (possible RCRA listing in the US).
UN Number: Not classified as hazardous under UN transport regulations for most countries, confirm with local authorities.
Proper Shipping Name: Chemical, not otherwise specified
Transport Hazard Class: Not regulated as dangerous goods for air, rail, road, or sea unless shipped in large quantities.
Packing Group: Not applicable
Environmental Hazards: May be harmful if large amounts enter water systems during transport accident
Transport Precautions: Keep in tightly sealed, clearly labeled containers, protect from physical damage and moisture during transit; temperature control advised for prolonged journeys.
Safety, Health and Environmental Regulations: Subject to chemical safety and environmental statutes in many jurisdictions, including OSHA Hazard Communication (US), REACH (EU), WHMIS (CA).
Inventory Status: Listed or notified in most major global chemical inventories (TSCA US, EINECS EU, CEPA CA).
Hazard Symbols: Irritant, corrosive
Labels Required: Clearly display GHS and CLP hazard information, precautionary measures, and supplier contact.
Restriction Status: Usage strictly for industrial or laboratory purposes, not for household use, workplace handling only by trained personnel.
Other Compliance: Users to consult regional, national or international chemical safety guidelines for storage, transport, and personal health protection details.
