Product Name: 1-Pentyl-3-Methylimidazolium Hydrogensulfate
Synonyms: [C5mim][HSO4]
CAS Number: 144105-65-9
Recommended Use: Laboratory chemicals, research and development applications
Supplier: Chemical supply companies and research distributors worldwide
Emergency Contact: Local poison control center or emergency room
GHS Classification: Eye irritation (Category 2), Skin irritation (Category 2), Acute toxicity oral (Category 4)
Signal Word: Warning
Hazard Statements: Causes skin and eye irritation; may be harmful if swallowed; may cause respiratory irritation if mist or vapor is inhaled
Pictograms: Exclamation mark
Precautionary Statements: Avoid breathing dust or mist; wear protective gloves, protective clothing, eye protection, and face protection; wash thoroughly after handling
Other Hazards: Prolonged or repeated exposure can cause irritation or allergic reaction in sensitive individuals
Chemical Name: 1-Pentyl-3-Methylimidazolium Hydrogensulfate
Formula: C9H18N2O4S
Component: 1-Pentyl-3-Methylimidazolium Hydrogensulfate
Concentration: >98% (typical laboratory grade)
Impurities: Minor water content or trace organic materials (less than 2%), may impact physical properties slightly but not major toxicity profile
Eyes: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do so. Continue rinsing and seek medical help if irritation persists.
Skin: Wash with plenty of soap and water. Remove contaminated clothing. Seek medical advice if irritation develops or persists.
Inhalation: Move to fresh air and provide oxygen if breathing is difficult. If symptoms appear, call a doctor.
Ingestion: Rinse mouth with water. Do not induce vomiting unless instructed by medical personnel. Seek medical attention immediately.
Notes for Doctor: Treatment is symptomatic and supportive, focus on maintaining vital functions
Suitable Extinguishing Media: Water spray, dry chemical, carbon dioxide, foam
Unsuitable Extinguishing Media: Strong water jets can spread chemical spills
Fire Hazards: Not readily combustible but may decompose on heating to release toxic fumes, including oxides of sulfur and nitrogen
Protective Equipment: Wear self-contained breathing apparatus and full protective clothing to prevent contact with skin and eyes
Precautions: Evacuate the area and fight fire from a safe distance, avoid inhalation of combustion products
Hazardous Combustion Products: Sulfur oxides, carbon monoxide, nitrogen oxides, irritant fumes
Personal Precautions: Evacuate unnecessary personnel, ventilate area, wear protective gloves, safety goggles, and suitable clothing
Environmental Precautions: Prevent further leakage or spillage if safe to do so, do not allow product to enter drains or soil
Cleanup Methods: Absorb with inert material such as sand or vermiculite, then shovel into suitable chemical waste container; wash spill site after cleanup
Disposal: Handle collected material as hazardous waste according to local regulations
Notification: Inform responsible authorities in case of significant spillage or potential environmental risk
Handling: Avoid contact with eyes, skin, and clothing; use in well-ventilated areas or with local exhaust; prevent generation of aerosols; keep sealed when not in use
Storage: Keep containers tightly closed in a cool, dry, well-ventilated place away from incompatible substances, such as strong oxidizers or bases
Technical Measures: Store in chemical-resistant containers; use secondary containment to avoid accidental release; label containers properly
Hygiene Measures: Wash hands thoroughly after handling; remove contaminated clothing and wash before reuse
Occupational Exposure Limits: No specific limits established for this chemical; minimize exposure as a good practice
Engineering Controls: Laboratory fume hood, local exhaust ventilation
Personal Protective Equipment: Chemical-resistant gloves (nitrile recommended), splash-proof safety goggles, lab coat, and closed-toed shoes
Respiratory Protection: Use NIOSH-approved respirator if ventilation is inadequate or if vapor or mist is present
Monitoring: Regular inspection and maintenance of protective equipment; monitor air concentrations if large quantities handled
Appearance: Colorless to light yellow viscous liquid
Odor: Slight sulfurous or chemical odor
pH: Acidic (typically between 0.5 and 2.5 in aqueous solution)
Melting Point: Varies depending on water content, often below room temperature
Boiling Point: Decomposes before boiling
Flash Point: Not highly flammable; flash point above 150°C
Solubility: Highly soluble in water and polar organic solvents (methanol, ethanol, acetone)
Density: Around 1.1–1.2 g/cm³ (may vary slightly due to water content)
Vapor Pressure: Negligible at room temperature
Other Properties: Hygroscopic, absorbs moisture from air; may be corrosive to metals over time
Chemical Stability: Stable under recommended storage and handling conditions
Reactivity: Acidic; reacts with bases to liberate heat and possibly hazardous gases
Conditions to Avoid: High temperatures, direct sunlight, exposure to strong bases or oxidizers
Incompatible Materials: Strong bases, oxidizing agents, reactive metals (may cause corrosion or dangerous reactions)
Hazardous Decomposition Products: Sulfur dioxide, nitrogen oxides, carbon monoxide, imidazole-related volatiles
Polymerization: Not expected to occur under normal use
Route of Exposure: Skin, eye contact, inhalation, ingestion
Acute Effects: Causes skin and eye irritation, may cause gastrointestinal discomfort if swallowed
Chronic Effects: No long-term studies available; avoid prolonged or repeated exposure
LD50 (oral, rat): Not well-defined, estimated moderate toxicity, handle with caution
Symptoms of Exposure: Redness, burning sensation, coughing, shortness of breath, stomach pain
Sensitization: No strong evidence, but individual reactions may occur
Carcinogenicity, Mutagenicity, Teratogenicity: No evidence from current data, material not listed as carcinogen by IARC, NTP, OSHA
Ecotoxicity: Data limited, likely to be harmful to aquatic life based on ionic liquid properties; potential for long-term ecological effects
Mobility: Quite soluble in water, can disperse rapidly if released
Persistence and Degradability: Not readily biodegradable, can persist in contaminated soil or water; may affect microorganisms
Bioaccumulation: Not expected to significantly bioaccumulate, but detailed studies lacking
Environmental Precautions: Do not release to environment or water systems; treat as chemical hazard waste
Aquatic Toxicity: Avoid discharge to rivers, lakes, or public sewers; ionic liquids often disrupt biological processes in aquatic systems
Waste Treatment Methods: Dispose of as hazardous waste according to federal, state, and local environmental control regulations
Container Disposal: Triple-rinse containers prior to disposal; do not reuse empty containers
Recommended Disposal: Incineration in a chemical incinerator equipped with afterburner and scrubber; small volumes can be absorbed on suitable material and taken to a certified chemical waste facility
Precautions: Do not pour into drains, surface water, or soil; wear protective gear during disposal handling
UN Number: Not classified for transport under most regulations
Transport Hazard Class: Not regulated as dangerous cargo
Packing Group: Not applicable
Labels Required: None specifically required
Special Precautions: Prevent container damage and leaks; avoid temperature extremes
Transport by Air/Rail/Sea: Comply with all applicable regulations; check that packaging prevents leaks or breaks under normal transport conditions
TSCA Status: Not listed on the US Toxic Substances Control Act inventory for commercial use
EPA SARA Title III: Not classified as extremely hazardous
OSHA: May not be listed, treat as hazardous chemical for workplace safety
REACH: Substance registration required in the EU for large-scale use
WHMIS Classification (Canada): Not classified, but workplace safety precautions still apply
Other Regulations: Handle in accordance with local, regional, and international requirements; consult relevant authorities for detailed guidance
