Product Name: 1-Heptyl-3-Methylimidazolium Acetate
Chemical Formula: C13H24N2O2
Synonyms: [HMIM][Ac], Heptyl-Methylimidazolium Acetate
CAS Number: 409399-29-5
Recommended Use: Laboratory chemical, solvent for research and industrial applications
Supplier Information: Listed manufacturer or distributor contact, telephone and emergency phone line, address for returns and incident reporting
Classification: Eye irritation (Category 2A), Skin irritation (Category 2), Acute aquatic toxicity (Category 3), Specific target organ toxicity (Category 3, respiratory tract)
Signal Word: Warning
Hazard Statements: Causes skin and eye irritation, may cause respiratory irritation, harmful to aquatic life
Pictograms: Exclamation mark, Environment
Precautionary Statements: Avoid breathing mist or vapor, wash hands thoroughly after handling, wear protective gloves and eye protection, avoid release into the environment
Chemical Name: 1-Heptyl-3-Methylimidazolium Acetate
Chemical Identity: Ionic liquid
Concentration: ≥98% by weight
Impurities or Stabilizing Additives: Minor impurities below 1% unrelated to product performance
Additives: None intentionally added
General Advice: Move exposed person to fresh air, remove contaminated clothing, seek medical advice if feeling unwell.
Inhalation: Bring person to fresh air, rest, get medical attention if symptoms persist—coughing, throat irritation, dizziness.
Skin Contact: Wash skin thoroughly with soap and water, get medical attention for persistent irritation or allergic reaction, remove soiled clothing.
Eye Contact: Rinse with plenty of clean water for several minutes, remove contact lenses, obtain medical advice if redness, pain, or visual change continue.
Ingestion: Rinse mouth, do not induce vomiting, seek immediate medical help if unwell or if large amount swallowed.
Notes for Physician: Provide symptomatic treatment, observe for delayed respiratory symptoms or signs of chemical exposure.
Suitable Extinguishing Media: Use alcohol-resistant foam, dry chemical powder, carbon dioxide—water spray may spread spilled liquid.
Unsuitable Extinguishing Media: Do not use direct water jet.
Special Hazards: May release toxic fumes like carbon oxides, nitrogen oxides, and methylimidazole breakdown products on combustion.
Firefighting Instructions: Wear full protective equipment and self-contained breathing apparatus, avoid inhaling vapors or decomposition products, contain water runoff to avoid environmental contamination.
Explosion Data: Unlikely for ionic liquid, but thermal breakdown at high heat possible.
Personal Precautions: Wear appropriate PPE, restrict area, ventilate space, prevent skin and eye contact.
Environmental Precautions: Prevent entry into drains, surface waters, and soil.
Methods for Cleaning Up: Absorb with inert material (sand, earth, vermiculite), collect residues mechanically, place in labeled container for proper disposal, ventilate area.
Other Guidance: Notify authority if large spills threaten water or environment.
Handling: Avoid contact with skin, eyes, and clothing, prevent aerosol and vapor formation, use only in well-ventilated areas, practice good industrial hygiene, keep containers tightly closed.
Storage: Store in a cool, dry, well-ventilated area away from incompatible substances like strong acids, oxidizers, or halogenated materials, keep container sealed when not in use, avoid freezing and excessive heat, use corrosion-resistant shelving, store chemical away from direct sunlight and humidity.
Incompatible Materials: Oxidizing agents, chlorinated compounds, strong mineral acids.
Occupational Exposure Limits: No established limits available for this compound.
Engineering Controls: General room ventilation and local exhaust at points of vapor or mist generation, emergency eye wash and safety shower nearby.
Personal Protective Equipment (PPE): Safety goggles or face shield, chemical-resistant gloves (nitrile, PVC), lab coat/coveralls, rubber boots for large-scale handling, respiratory protection if ventilation insufficient.
Hygiene Measures: Do not eat, drink, or smoke during use, wash hands before breaks and upon finishing work sessions, launder contaminated clothing before reuse.
Appearance: Colorless to pale yellow liquid
Odor: Slight, vinegar-like, characteristic of acetate
Odor Threshold: Not determined
pH: 6–7 for solution in water
Melting Point: Below room temperature
Boiling Point: Above 200°C (approximately estimated)
Flash Point: 170°C (closed cup)
Evaporation Rate: Negligible at ambient temperature
Flammability (solid, gas): Not flammable as supplied
Vapor Pressure: <1 hPa at 20°C
Vapor Density: Not available
Density: 1.03–1.07 g/cm³ at 25°C
Solubility: Miscible with water, soluble in polar organic solvents
Partition Coefficient (n-octanol/water): Not determined
Auto-Ignition Temperature: Not self-igniting
Decomposition Temperature: Begins above 200°C
Viscosity: 70–120 mPa·s at 25°C.
Chemical Stability: Stable at standard temperature and pressures, avoid conditions over 50°C for prolonged times.
Possibility of Hazardous Reactions: No dangerous reactions known under recommended conditions, reacts with strong oxidizers.
Conditions to Avoid: Heat, open flame, sparks, incompatible chemicals.
Incompatible Materials: Chlorinated chemicals, strong acids or bases, oxidizing agents.
Hazardous Decomposition Products: CO2, CO, acetic acid, nitrogen oxides, methylimidazole vapors.
Acute Toxicity: Oral LD50 (rat) estimated: >2500 mg/kg, low acute toxicity by dermal or inhalation routes.
Skin Corrosion/Irritation: May cause moderate irritation on prolonged or repeated exposure.
Serious Eye Damage/Irritation: Causes temporary but noticeable eye irritation.
Respiratory Sensitization: Short-term exposure to vapor or mist may cause irritation; symptoms include cough and sore throat.
Skin Sensitization: Rare, possibility of mild allergic reactions on sensitive skin.
Germ Cell Mutagenicity: Not classified due to lack of data.
Carcinogenicity: No evidence of carcinogenicity in animal data.
Reproductive Toxicity: Not classified, missing comprehensive animal or human studies.
Specific Target Organ Toxicity (STOT): May cause respiratory tract irritation.
Aspiration Hazard: Unlikely, viscous liquid and low volatility.
Toxicity (Aquatic): Harmful to aquatic organisms, EC50 (Daphnia magna, 48hr): 50–100 mg/L.
Persistence and Degradability: Not rapidly biodegradable, may persist in aquatic environments.
Bioaccumulation Potential: Not expected due to moderate solubility, but long chains may increase risk.
Mobility in Soil: High water solubility, potential for migration into water systems.
Other Adverse Effects: Ionic liquids often disrupt aquatic microbial communities, avoid release in high concentrations.
Waste Treatment Methods: Do not dump into sewer or natural water sources, collect spillage using inert sorbent, package securely for chemical waste contractor.
Disposal of Packaging: Triple rinse containers, puncture after cleaning, send to approved hazardous waste disposal.
Regulations: Dispose of following local, regional, and national environmental requirements.
Unused Product: Send for controlled incineration or chemical treatment, avoid landfill disposal.
UN Number: Not assigned for transport.
Proper Shipping Name: Not regulated under ADR/RID/IMDG/IATA.
Transport Hazard Class: Not classified as hazardous for most means of transport.
Packing Group: No packing group specified.
Environmental Hazards: Not considered marine pollutant, though larger spills should be reported.
Special Transport Precautions: Keep container upright and secured, avoid exposure to extreme temperatures, clearly label container.
Bulk Transport: Not subject to MARPOL Annex II or IBC Code.
Safety, Health and Environmental Regulations: Subject to chemical registration in some regions (e.g., EU REACH, US TSCA), not listed by OSHA, ACGIH, NTP, IARC.
Other Classifications: None under WHMIS, not on DOT hazardous materials list, no SARA Title III section 313 reporting.
Label Requirements: Product identifier, GHS classification, supplier details, hazard and precautionary statements must be displayed.
Country-Specific Regulations: Registrations or notification may be required in certain jurisdiction for commercial quantities.
Restriction of Use: Not intended for household or food applications.
