Product Name: 1-Pentyl-3-Methylimidazolium Acetate
CAS Number: 869295-64-3
Synonyms: [PMIM][Ac], 1-Pentyl-3-Methyl-Imidazolium Acetate
Recommended Use: Solvent, chemical synthesis, ionic liquid research
Manufacturer: Chemical supply companies specializing in ionic liquids
Emergency Phone: Local national chemical emergency hotline
GHS Classification: Acute Toxicity-Oral (Category 4), Skin Irritation (Category 2), Eye Irritation (Category 2A)
Signal Word: Warning
Hazard Statements: Harmful if swallowed, causes skin and eye irritation
Pictograms: Exclamation mark
Precautionary Statements: Avoid contact with eyes, skin, and clothing, wash thoroughly after handling, do not eat, drink, or smoke when using
Routes of Entry: Inhalation, skin absorption, ingestion
Potential Health Effects: Burning sensation, nausea, abdominal discomfort, redness or swelling at site of contact
Chemical Name: 1-Pentyl-3-Methylimidazolium Acetate
Molecular Formula: C11H20N2O2
Molecular Weight: 212.29 g/mol
Concentration: 100%
Impurities and Stabilizing Additives: No known stabilizers; potential minimal residuals from synthesis
Inhalation: Remove exposed individual to fresh air, keep at rest, provide oxygen if breathing becomes difficult, seek medical attention for symptoms
Skin Contact: Remove contaminated clothing, rinse skin with plenty of water for at least 15 minutes, contact physician if irritation persists
Eye Contact: Rinse eyes cautiously with water for several minutes while holding eyelids open, remove contact lenses if present and easy to do, continue rinsing, consult medical personnel if irritation continues
Ingestion: Do not induce vomiting, rinse mouth with water, seek immediate medical attention, never give anything by mouth to an unconscious individual
Suitable Extinguishing Media: Dry chemical, CO2, foam, water spray
Specific Hazards: Possible release of toxic fumes including carbon oxides, nitrogen oxides, vapors from decomposition
Protective Equipment for Firefighters: Firefighters should wear self-contained breathing apparatus with full protective gear
Unusual Fire Hazards: Can form combustion products that irritate the respiratory system
Explosion Limits: Data not available, consider general precautions for ionic liquids
Auto-ignition Temperature: Not determined
Personal Precautions: Evacuate unnecessary personnel, wear appropriate protective equipment including gloves and splash goggles, ventilate area
Environmental Precautions: Prevent further leakage or spillage, avoid release into waterways or drains
Containment and Clean-Up Methods: Absorb with inert material such as sand or vermiculite, collect in suitable container for disposal, decontaminate area with soapy water, dispose of contaminated materials according to local regulations
Handling: Avoid contact with skin, eyes, and clothing, use only in well-ventilated areas or chemical fume hood, prevent formation of aerosol, keep away from flames and hot surfaces, practice good industrial hygiene
Storage: Store in tightly closed original container, keep in cool, dry, well-ventilated area, keep away from incompatible substances such as oxidizers and reducing agents, avoid moisture ingress to prevent hydrolysis or degradation, control temperature to avoid decomposition
Engineering Controls: Work with local exhaust or comprehensive ventilation system, use process enclosures when feasible
Personal Protective Equipment (PPE): Chemical-resistant gloves (nitrile or neoprene preferred), laboratory coat or apron, safety goggles or face shield, use respiratory protection with organic vapor/acid gas cartridge for large scale manipulation or if ventilation is inadequate
Hygiene Measures: Wash hands before breaks, after handling, and after removing gloves, do not eat, drink, or smoke during use, remove contaminated clothing immediately and launder before reuse
Exposure Limits: No occupational exposure limits set for this material, use general dust and vapor limits as guideline (e.g., OSHA PEL for particulates not otherwise regulated)
Appearance: Colorless to pale yellow viscous liquid
Odor: Mild, possibly slight vinegar odor due to acetate group
Odor Threshold: Not determined
pH: Neutral to alkaline in water
Melting Point: Typically below room temperature
Boiling Point: Decomposes before boiling
Flash Point: Greater than 100°C, precise value depends on impurities
Evaporation Rate: Negligible
Flammability: Not highly flammable
Vapor Pressure: Very low at ambient conditions
Solubility: Miscible with water and many organic solvents
Partition Coefficient (n-octanol/water): Not determined
Vapor Density: Heavier than air
Relative Density: Approximately 1.08-1.10 g/cm³ at 20°C
Viscosity: Higher than water, increases with cold
Decomposition Temperature: Can decompose above 180°C, forming hazardous vapors
Chemical Stability: Stable under recommended storage conditions, sensitive to strong oxidizers
Possibility of Hazardous Reactions: Contact with strong acids, bases, or oxidizers may cause violent reactions or decomposition
Conditions to Avoid: Excess heat, moisture, contact with incompatible substances
Incompatible Materials: Strong acids, strong bases, oxidizing agents, reducing agents, materials reacting with carboxylates
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, nitrogen oxides, possible imidazole derivatives
Acute Toxicity: Oral LD50 (rat): Not specifically determined; ionic liquids of similar structure often fall in the 200-2000 mg/kg range
Skin Corrosion/Irritation: Causes irritation based on acetate anion irritancy and imidazolium cation effects
Serious Eye Damage/Irritation: Causes eye irritation, possible redness, pain, blurred vision
Respiratory or Skin Sensitization: No human data, related compounds can cause allergic reactions in sensitive persons
CMR Effects (Carcinogenicity, Mutagenicity, Reproductive Toxicity): No evidence from limited studies; insufficient animal or human data
Chronic Toxicity and Long-Term Effects: Not documented, ionic liquids have shown tissue irritancy in repeated exposure scenarios
Routes of Exposure: Ingestion, inhalation, dermal contact
Potential Symptoms: Nausea, headache, respiratory discomfort, skin rash, redness at contact area
Ecotoxicity: Ionic liquids can be toxic to aquatic organisms, especially invertebrates, may exhibit moderate bioaccumulation potential
Persistence and Degradability: Slowly biodegradable; breakdown via hydrolysis and microbial metabolism in soil and water possible, but rate depends on environmental factors
Bioaccumulative Potential: Unlikely significant for this compound based on molecular size and water solubility, but data insufficient for firm conclusion
Mobility in Soil: May migrate in soil due to high water solubility, persistence increases risk of groundwater contamination
Other Adverse Effects: Not classified as environmentally hazardous, though precaution recommended until more field data collected
Waste Treatment Methods: Dispose of product and contaminated containers in accordance with local, regional, and national regulations, avoid disposal into environment
Methods of Disposal: Incineration in a chemical incinerator equipped with afterburner and scrubber preferred method for sodium-containing ionic liquids; avoid dilution in public wastewater
Contaminated Packaging: Rinse with water, then dispose as hazardous waste
Special Precautions: Do not re-use empty containers, do not discharge into public sewage or on land uncontrolled
UN Number: Not regulated as a dangerous good for transport by road, sea, or air
UN Proper Shipping Name: Not regulated
Transport Hazard Class: Not classified
Packing Group: Not assigned
Environmental Hazards: Not defined as hazardous to aquatic environment under UN Model Regulations
Special Precautions: Package securely to prevent leaks; keep away from oxidizers and incompatible goods
TSCA Status: Not listed on US EPA TSCA Inventory, likely used for research or industrial applications
DSL/NDSL Status (Canada): Not listed
REACH Status (EU): Not registered, for use under scientific research and development, comply with EU regulations for laboratory use
Other Country Listings: Varies; check specific country chemical inventories for up-to-date information
OSHA Status: Not specifically regulated; general chemical safety provisions apply
SARA Title III (Hazard Categories): Not subject to reporting
WHMIS (Canada): Classified as hazardous product for acute toxicity/skin and eye irritation
Other Regulations: Observe all local, state, national, and international guidelines, keep records of use, handling, and disposal as required by law
