Material Safety Data Sheet: 1-Octyl-3-Methylimidazolium Chloride

Identification

Product Name: 1-Octyl-3-Methylimidazolium Chloride
Chemical Formula: C12H23ClN2
Chemical Family: Ionic Liquid
CAS Number: 64697-40-1
Synonyms: OMIM-Cl, 1-Methyl-3-octylimidazolium chloride
Intended Use: Laboratory research, chemical synthesis, catalysis
Supplier Details: Name, full address, phone number, and email of supplier or manufacturer available upon purchase
Emergency Contact Number: 24-hour response phone number provided with shipment documents

Hazard Identification

GHS Classification: Skin irritation (Category 2); Eye irritation (Category 2A); Acute aquatic toxicity (Category 3)
Signal Word: Warning
Hazard Statements: Causes skin irritation; Causes serious eye irritation; Harmful to aquatic life
Pictograms: Exclamation Mark, Environment
Precautionary Statements: Avoid release to the environment; Wear protective gloves, protective clothing, eye protection, and face protection; Wash hands thoroughly after handling
Emergency Overview: May cause discomfort or injury to eyes, skin, and respiratory system; Spills can create slip hazards due to viscosity

Composition / Information on Ingredients

Chemical Name: 1-Octyl-3-Methylimidazolium Chloride
CAS Number: 64697-40-1
Concentration: ≥ 98% by weight
Impurities / Additives: Usually below 2% water and trace organic by-products depending on synthesis process limited under supplier standards
Other Components: None that contribute to hazard classification

First Aid Measures

General Advice: Remove individual from exposure, seek medical advice for any persistent symptoms
Inhalation: Move to fresh air promptly, support respiration as needed
Skin Contact: Wash affected area with soap and plenty of water, remove contaminated clothing, seek care if irritation persists
Eye Contact: Flush eyes gently with water for at least 15 minutes, lift eyelids occasionally, seek care immediately if irritation develops
Ingestion: Rinse mouth with water, never induce vomiting unless instructed by medical professional, obtain care if feeling unwell

Fire-Fighting Measures

Flammability: Non-flammable under normal conditions
Suitable Extinguishing Media: Water spray, alcohol-resistant foam, dry chemical, carbon dioxide
Special Protective Equipment: Firefighters should wear self-contained breathing apparatus and full gear, avoid inhaling heated vapors
Hazardous Combustion Products: Carbon oxides, nitrogen oxides, hydrogen chloride, hazardous imidazolium derivatives
Firefighting Instructions: Prevent runoff from contaminating waterways, stay upwind, avoid inhaling smoke or fumes

Accidental Release Measures

Personal Precautions: Use appropriate personal protective equipment; ventilate area
Containment: Stop leak when safe, dike spill with inert absorbent (sand, vermiculite)
Clean-up: Scoop or absorb material, place into chemical waste container, wash contaminated area with plenty of water and detergent
Spill Response: Avoid discharge to the environment, report significant releases to local authorities
Environmental Precautions: Prevent entry into drains, surface water, or soil

Handling and Storage

Safe Handling: Wear gloves, protective clothing, and eye protection, avoid breathing vapors or mist, only handle in well-ventilated areas
Storage Requirements: Keep container tightly closed, store in cool, dry, well-ventilated location, protect from moisture and strong oxidizers
Incompatible Materials: Strong acids, strong bases, oxidizing agents, sources of ignition
Hygiene Practices: Wash hands after use, avoid eating, drinking, or smoking during handling
Storage Temperature: Typically stored at controlled room temperature (15-25°C)

Exposure Controls and Personal Protection

Engineering Controls: Use fume hood or mechanical ventilation, especially for bulk handling
Personal Respiratory Protection: Use suitable respirator if ventilation inadequate or concentrations unknown
Skin Protection: Wear chemical-resistant gloves (nitrile rubber, neoprene), long sleeves, and lab coat
Eye Protection: Wear safety goggles or face shield, especially if splashing possible
Other Protection: Use closed systems or local exhaust; emergency eyewash/shower recommended in work area

Physical and Chemical Properties

Appearance: Colorless to pale yellow viscous liquid or crystalline solid (depends on temperature and purity)
Odor: Mild, faintly aromatic
pH: 6.0 – 8.0 (aqueous solution, 1%)
Boiling Point: Decomposes above 250°C
Melting Point: Around 45-50°C
Flash Point: > 150°C (closed cup)
Vapor Pressure: Low (below 0.01 mmHg at 25°C)
Solubility: Soluble in water and polar organic solvents
Density: 0.95 – 1.10 g/cm³
Viscosity: 70-200 cP at 25°C
Partition Coefficient (log Kow): Not determined
Autoignition Temperature: Not established
Decomposition Temperature: >250°C
Other Properties: Hygroscopic, may absorb water from air

Stability and Reactivity

Chemical Stability: Stable under recommended storage and handling conditions
Reactivity: Reacts with strong oxidizers, acids, and bases
Conditions to Avoid: Excess humidity, elevated temperatures, exposure to incompatible chemicals
Hazardous Decomposition Products: Chloride fumes, nitrogen oxides, carbon monoxide, carbon dioxide, imidazolium breakdown products
Polymerization: No hazardous polymerization reported

Toxicological Information

Likely Routes of Exposure: Inhalation, skin contact, eye contact, ingestion
Symptoms of Exposure: Skin redness or irritation, eye discomfort or damage, sore throat on inhalation, abdominal discomfort if swallowed
Acute Toxicity: Data limited, estimated oral LD50 (rat) >2000 mg/kg (low acute toxicity)
Chronic Effects: Limited information; repeated exposure may cause persistent skin dryness or dermatitis
Carcinogenicity: Not listed as carcinogenic by IARC, NTP, ACGIH, or OSHA
Sensitization: No data confirm sensitization but similar compounds may cause allergic reactions
Mutagenicity: No relevant studies indicate mutagenic risk
Other Health Effects: Prolonged exposure to vapors or solutions could damage mucous membranes

Ecological Information

Aquatic Toxicity: Harmful to aquatic life; EC50 (Daphnia magna, 48h) ~60 mg/L
Degradability: Not readily biodegradable, persistent in water or soil
Bioaccumulation: Data are inconclusive, potential exists for modest bioaccumulation due to hydrophobic chain
Mobility in Soil: Moderately mobile depending on environmental conditions, may leach slowly
Other Adverse Effects: Avoid large-scale environmental release since long-term aquatic effects remain uncertain

Disposal Considerations

Disposal Methods: Dispose via licensed chemical waste contractor; incineration recommended under controlled conditions
Container Disposal: Triple-rinse empty containers, puncture to prevent reuse, dispose as hazardous chemical waste
Special Instructions: Do not release residue or large quantities into water or drainage systems
Legal Requirements: Dispose according to local, regional, and national regulations governing hazardous waste

Transport Information

UN Number: Not assigned for most transport scenarios (consult latest regulations)
Proper Shipping Name: Not regulated as dangerous good under ADR, IATA, IMDG codes in quantities typical for research
Transport Hazard Class: Not classified as hazardous under major transport schemes
Packing Group: Not assigned
Environmental Hazards: Not classified as marine pollutant; avoid bulk spills due to aquatic toxicity
Special Precautions: Ensure secondary containment, prevent leakage in transit

Regulatory Information

Label Requirements: GHS compliant labeling with pictograms, signal words, hazard and precautionary statements
Chemical Inventory Status: May be listed under REACH, TSCA, or similar national inventories (consult supplier)
OSHA Regulatory Status: Not regulated as hazardous under OSHA Hazard Communication Standard
SARA Title III: Not subject to section 313 reporting
Other Requirements: Users must comply with all local, state, federal, and international chemical handling and transport rules
Worker Protection: Provision of Safety Data Sheet required, information on training and safe handling practices mandatory under chemical safety laws