Chemical Name: 1-Propylsulfonic-3-Methylimidazolium Hydrogensulfate
SYNONYMS: [PSMIM][HSO4], 1-Propyl-3-methylimidazolium sulfonate hydrogensulfate
CAS Number: 73509-62-5
Recommended Use: Laboratory chemical, research and development, catalysis, solvent applications
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GHS Classification: Corrosive to metals; Skin irritation; Eye irritation; Specific target organ toxicity (single exposure)
Signal Word: Warning
Hazard Statements: Causes serious eye damage, may cause skin burns, may cause respiratory irritation
Pictograms: Corrosive, Exclamation Mark
Precautionary Statements: Avoid breathing dust, fumes, gas, mist, vapors, spray; wash thoroughly after handling; use only outdoors or in a well-ventilated area; wear protective gloves, clothing, and eye/face protection
Route of Exposure: Inhalation, ingestion, skin and eye contact
Other Hazards: May cause environmental harm, avoid release to the environment
Chemical Formula: C7H14N2O4S2
Main Component: 1-Propylsulfonic-3-Methylimidazolium Hydrogensulfate
Concentration: ≥99%
Impurities and Stabilizing Additives: None reported at relevant concentrations
Ingredient Type: Ionic liquid composed of cation: 1-propylsulfonic-3-methylimidazolium, anion: hydrogensulfate
Skin Contact: Remove contaminated clothing, rinse skin immediately with plenty of water, seek medical attention for persistent irritation or burns
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses if present and easy to do, continue rinsing, seek urgent medical advice
Ingestion: Rinse mouth with water, never induce vomiting, seek medical attention, do not give anything by mouth to a person who is unconscious
Inhalation: Move victim to fresh air, keep at rest, provide oxygen or artificial respiration if necessary, seek medical advice if symptoms develop
Acute and Delayed Symptoms: Skin and eye irritation, respiratory discomfort, possible chemical burns
Important Information for Doctor: Treat symptomatically; wash exposed area with copious amounts of water; observe for delayed effects
Suitable Extinguishing Media: Use water spray, foam, dry chemical powder, or carbon dioxide
Unsuitable Media: Do not use high-volume water jets as chemical dilution may spread material
Hazardous Combustion Products: Produces toxic fumes of sulfur oxides, nitrogen oxides, carbon oxides upon burning
Fire Fighting Procedures: Wear self-contained breathing apparatus and full protective gear
Fire Hazard: Product may not be readily flammable but decomposition products can be hazardous
Special Equipment: Chemical resistant gloves, boots, fully encapsulating suits
Personal Precautions: Avoid direct skin, eye, and respiratory contact; ensure adequate ventilation; wear protective equipment
Environmental Precautions: Prevent leakage, spillage, or entry into drains, surface, or ground water
Small Spill Cleanup: Absorb with inert material such as sand or earth, transfer to appropriate containers for disposal
Large Spill Response: Dike up to contain, collect and place in secure containers for disposal, ventilate area
Decontamination: Wash area with water and detergent after removal of bulk material
Secondary Hazards: Slippery surfaces, risk of chemical burn
Handling: Work in well-ventilated conditions, avoid producing dust, use proper personal protective equipment, handle in accordance with good chemical hygiene practices
Hygiene Measures: Wash hands, face, and exposed skin after handling, remove contaminated clothing, avoid eating, drinking, or smoking in work area
Storage: Keep in tightly sealed containers, store in cool, dry, well-ventilated area, keep away from incompatible materials like strong oxidizers, bases, and reducing agents
Special Precautions: Protect from moisture, avoid temperatures above 40°C, minimize exposure to direct sunlight
Engineering Controls: Work in a chemical fume hood, use local exhaust ventilation, maintain eyewash and safety showers nearby
Respiratory Protection: Use NIOSH-approved respirator if vapor/fume exposure exceeds limits
Skin Protection: Wear nitrile or neoprene gloves, impervious clothing, lab coat
Eye Protection: Use safety glasses or chemical splash goggles
Workplace Exposure Limits: Not established for this chemical
Other Protective Measures: Prevent contact with skin, eyes, clothing, remove contaminated garments immediately
Appearance: Viscous colorless to pale yellow liquid or crystalline solid (depending on temperature)
Odor: Mild, sulfurous odor
pH: Acidic, typically ≤2 (1% aqueous solution)
Melting Point/Freezing Point: Approx. 15 - 30°C
Boiling Point: Decomposes before boiling
Flash Point: Not easily flammable
Evaporation Rate: Negligible
Upper/Lower Flammability Limits: Not determined
Vapor Pressure: Negligible at room temperature
Solubility: Miscible in water, soluble in polar organic solvents
Partition Coefficient: Not determined
Viscosity: High at room temperature
Density: Typically 1.3 – 1.5 g/cm³ at 25°C
Other Properties: Ionic, conductive, hygroscopic
Chemical Stability: Stable under recommended handling and storage conditions
Possibility of Hazardous Reactions: Violent reaction with strong oxidizers, possible reaction with strong bases and reducing agents
Incompatible Materials: Strong alkalis, oxidizing agents, strong reducing agents
Hazardous Decomposition Products: Sulfur oxides, nitrogen oxides, carbon oxides, imidazole derivatives
Conditions to Avoid: High temperatures, direct sunlight, moisture ingress
Polymerization: Not expected to occur
Acute Toxicity: No definitive data; expected to be harmful if swallowed, causes severe eye and moderate skin irritation
Routes of Exposure: Inhalation, skin, eye, and ingestion
Symptoms: Burning sensation, redness, pain at point of contact, coughing, respiratory distress, abdominal discomfort
Chronic Effects: Prolonged or repeated contact may cause dermatitis
Carcinogenicity: No evidence of carcinogenicity
Mutagenicity: No known mutagenic effects
Reproductive Toxicity: Not established
Other Risks: Potential for delayed skin or eye injury
Ecotoxicity: Harmful to aquatic life due to acidity and ionic character
Persistence and Degradability: Not readily biodegradable, may persist in the environment
Bioaccumulation Potential: Not expected to bioaccumulate, but data insufficient
Mobility in Soil: Likely to leach and disperse in water due to high water solubility
Other Environmental Information: Avoid release to natural waters and sewers, inform relevant authorities if large quantities enter the environment
Waste Treatment Methods: Collect in suitable containers, dispose via licensed hazardous waste contractor
Disposal of Product: Do not discharge into drains or waterways, incinerate at authorized facility under controlled conditions
Disposal of Contaminated Packaging: Triple rinse, puncture, and dispose as hazardous waste
Additional Guidance: Keep records of disposal according to local, regional, and national regulations
Recommended Waste Codes: Check specific country and regional guidelines
UN Number: Not classified as a dangerous good under most transport regulations
Proper Shipping Name: Chemical, not otherwise specified
Transport Hazard Class: Not regulated
Packing Group: Not assigned
Environmental Hazards: Transport with precautions against spills
Additional Precautions: Secure containers to prevent movement, use corrosion-resistant packaging
EU Classification: Corrosive, harmful
US EPA: Not specifically listed; subject to requirements under TSCA
OSHA: Not specifically regulated but subject to hazard communication standards
REACH Registration: Registration may be required for industrial use in the EU
Label Requirements: Corrosive pictogram, risk and safety phrases, hazard statements
Other Regulations: Observe specific guidance provided by national authorities, maintain documentation for workplace use and transport
