MSDS: 1-Octyl-3-Methylimidazolium Acetate

Identification

Product Name: 1-Octyl-3-Methylimidazolium Acetate
Synonyms: OMIM Acetate, 1-Octyl-3-methylimidazolium ethanoate
Chemical Formula: C12H22N2O2
CAS Number: 646301-90-2
Recommended Use: Research laboratory chemical, solvent for chemical processing, cellulose dissolution, catalyst medium
Manufacturer: [Company Information]
Emergency Contact: [Local Emergency Number, Manufacturer Emergency Contact]

Hazard Identification

Classification: Eye irritation (Category 2), Skin irritation (Category 2), Acute toxicity (Oral, Category 5)
Label Elements: GHS signal word: Warning
Hazard Statements: May cause skin and eye irritation, harmful if swallowed
Precautionary Statements: Avoid contact with eyes and skin, wash hands thoroughly after handling, do not eat, drink, or smoke when using this product
GHS Pictograms: Exclamation Mark
Routes of Exposure: Inhalation, Ingestion, Skin, Eye
Symptoms: Redness, discomfort, burning sensation in affected area, headache, nausea on significant exposure

Composition / Information on Ingredients

Chemical Name: 1-Octyl-3-Methylimidazolium Acetate
CAS Number: 646301-90-2
Concentration: ≥ 97%
Impurities: Water (<2%), trace contaminants from synthesis (details vary by lot)

First Aid Measures

Inhalation: Remove person to fresh air, seek medical attention if symptoms persist, provide oxygen if breathing is difficult
Skin Contact: Wash area thoroughly with plenty of water and soap, remove contaminated clothing and shoes, seek medical attention if irritation continues
Eye Contact: Flush eyes with plenty of water for at least 15 minutes, lift eyelids frequently, seek medical attention immediately
Ingestion: Rinse mouth with water, do not induce vomiting unless directed by medical personnel, seek medical advice
Most Important Symptoms/Effects: Irritation to mucous membranes, nausea, drowsiness, localized skin burns

Fire-Fighting Measures

Suitable Extinguishing Media: Dry chemical, CO2, water spray, foam
Unsuitable Extinguishing Media: High pressure water jets may cause fire to spread
Hazardous Combustion Products: Carbon monoxide, carbon dioxide, nitrogen oxides, imidazole compounds
Protective Equipment: Self-contained breathing apparatus (SCBA), full protective clothing
Specific Hazards: Decomposition at high temperature may produce toxic and corrosive gases, container may rupture due to buildup of pressure

Accidental Release Measures

Personal Precautions: Use appropriate personal protective equipment, keep unprotected people away, contain spill area
Environmental Precautions: Prevent entry into drains, waterways, and soil
Methods for Clean-up: Absorb with inert material (sand, earth, try to avoid sawdust), collect in sealed chemical waste containers for disposal, ventilate area
Reference to Other Sections: See Section on Exposure Controls/Personal Protection, and Disposal Considerations

Handling and Storage

Precautions for Safe Handling: Use in a well-ventilated area, avoid direct contact with skin and eyes, avoid breathing vapor or mist, refrain from eating or drinking in work area
Storage Conditions: Keep in tightly closed container, store in cool, dry, and well-ventilated location away from incompatible materials such as strong oxidizers and acids, protect from moisture
Specific End Use: Only for research, production, and professional use by qualified personnel

Exposure Controls and Personal Protection

Engineering Controls: Use chemical fume hood, ensure eye wash and safety shower stations are readily accessible
Personal Protection: Wear chemical-resistant gloves (nitrile or neoprene), splash-proof safety goggles, lab coat, and suitable respiratory protection if workplace exposure limits are exceeded
Hygiene Measures: Wash hands and face thoroughly after handling, remove contaminated clothing before re-entering common areas, do not touch face or eyes
Exposure Limits: No specific OSHA or ACGIH limits established for this compound, minimize exposure as much as possible

Physical and Chemical Properties

Appearance: Colorless to pale yellow liquid
Odor: Faint, characteristic
Odor Threshold: Not determined
pH: Around 8 to 10 (0.5 M solution in water)
Melting Point: Approx. -35°C
Boiling Point: > 200°C (decomposes)
Flash Point: > 125°C (Closed cup)
Evaporation Rate: Not available
Flammability: Not flammable under normal conditions
Vapor Pressure: Very low at ambient temperature
Vapor Density: Not available
Density: 1.03–1.05 g/cm³ at 20°C
Solubility in Water: Miscible in all proportions
Partition Coefficient (Log Kow): Not determined
Auto-ignition Temperature: Not available
Decomposition Temperature: > 200°C
Viscosity: Moderate viscosity, varies with temperature

Stability and Reactivity

Chemical Stability: Stable under recommended storage and handling conditions
Reactivity: Non-reactive under normal use
Hazardous Reactions: Reacts exothermically with strong oxidizers, acids
Conditions to Avoid: Excessive heat, moisture, open flames, strong oxidizing agents
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, nitrogen oxides, volatile organic compounds

Toxicological Information

Acute Toxicity: Low to moderate toxicity via oral and dermal exposure, LD50 (oral, rat) > 2000 mg/kg
Chronic Toxicity: No long-term studies available to date
Skin Corrosion/Irritation: May cause irritation with prolonged or repeated exposure
Serious Eye Damage/Irritation: May cause moderate irritation, possible redness and pain
Respiratory Sensitization: No data found, vapor or aerosol may irritate respiratory tract
Skin Sensitization: No data found
Mutagenicity: No evidence of mutagenic properties
Carcinogenicity: Not classified as carcinogenic by IARC, NTP, or OSHA
Reproductive Toxicity: No conclusive studies available
Symptoms Related to Physical, Chemical, and Toxicological Characteristics: Burning, itching, redness, potential nausea if ingested in larger amount

Ecological Information

Ecotoxicity: Not expected to be acutely toxic to aquatic organisms at typical use concentrations, but limited data available
Persistence and Degradability: Moderately biodegradable under aerobic conditions
Bioaccumulation Potential: Low bioaccumulation potential, partition coefficient suggests low tendency to build up in organisms
Mobility in Soil: High solubility in water suggests likely migration in soil
Other Adverse Effects: Avoid uncontrolled release to environment, impacts poorly understood due to limited evidence

Disposal Considerations

Waste Treatment Methods: Dispose of chemical waste in accordance with local, regional, and national regulations
Contaminated Packaging: Empty containers may retain residues and vapors; triple rinse and dispose of according to guidelines
Disposal Recommendations: Do not discharge into surface water, soil, or public sewers; collect and hand over to authorized disposal facility
Special Precautions: Avoid contact with incompatible materials during disposal

Transport Information

UN Number: Not regulated as hazardous for transportation under ADR, IMDG, or IATA
Proper Shipping Name: Not dangerous goods
Transport Hazard Class: Not regulated
Packing Group: Not assigned
Environmental Hazards: Not classified as marine pollutant
Special Transport Precautions: Keep containers upright, secure to prevent movement, avoid extreme temperature shifts

Regulatory Information

TSCA: Listed or complies with US Toxic Substances Control Act
EINECS/ELINCS: Listed or meets criteria
DSL/NDSL: Listed or complies with Canadian regulations
Other Regulations: Not listed as a hazardous chemical under major global chemical control laws
Labeling Requirements: GHS-compliant labeling for workplace and transit
Restrictions: Use only for properly permitted purposes in compliance with state, local, and federal laws