Product Name: 1-Hexadecyl-3-Methylimidazolium Chloride
Chemical Formula: C22H45ClN2
Synonyms: HMIM Cl, C16MIM Cl
CAS Number: 145519-87-1
Recommended Use: Laboratory chemical, research, synthesis
Manufacturer: Contact supplier for information
Emergency Contact: Chemtrec 1-800-424-9300 (USA)
GHS Classification: Eye irritation (Category 2A), Skin irritation (Category 2), Aquatic chronic toxicity (Category 3)
Signal Word: Warning
Hazard Statements: Causes skin and eye irritation, harmful to aquatic life with long lasting effects
Pictograms: Exclamation mark
Precautionary Statements: Avoid breathing dust, avoid contact with eyes and skin, wash hands thoroughly after handling, wear protective gloves and eye protection
Routes of Exposure: Inhalation, ingestion, skin, eye contact
Description of Hazards: Irritation, possible sensitization, risk of harm if swallowed or in contact with mucous membranes
Chemical Name: 1-Hexadecyl-3-methylimidazolium chloride
CAS Number: 145519-87-1
Concentration: >95%
Impurities: Not classified as hazardous, trace levels proprietary to synthesis process
Inhalation: Move person to fresh air, keep quiet and warm, seek medical attention if breathing becomes difficult or symptoms develop
Skin Contact: Immediately wash skin with plenty of water and soap, remove contaminated clothing, obtain medical advice if irritation persists
Eye Contact: Rinse cautiously with water for at least 15 minutes, remove contact lenses if present, seek medical advice if symptoms persist
Ingestion: Rinse mouth, do not induce vomiting, drink water to dilute, seek medical help promptly
Important Symptoms: Redness, pain, itching, dryness, possible ulceration or rash at contact site
Most Important Medical Attention: Symptomatic treatment, address irritation, monitor airway and breathing
Suitable Extinguishing Media: Dry chemical powder, CO2, foam, water spray
Unsuitable Media: Direct water jet on burning chemical
Hazards from Combustion: Hydrogen chloride gas, nitrogen oxides, carbon oxides, toxic fumes
Special Protective Equipment: Self-contained breathing apparatus, protective clothing
Advice for Firefighters: Evacuate area, use water spray to cool containers, avoid inhalation of combustion products, control runoff
Personal Precautions: Use suitable protective equipment, avoid skin and eye contact, do not breathe dust
Environmental Precautions: Prevent release into drains, sewers, or waterways
Containment Methods: Absorb spillage with inert material such as sand or dry earth, scoop up with non-sparking tools
Cleanup: Place collected material in containers for proper disposal, ventilate area, wash spill site after collection
Safe Handling: Wear gloves and goggles, use in well-ventilated area or fume hood, avoid creating dust
Safe Storage: Keep container tightly closed, store in cool, dry, and well-ventilated conditions, protect from moisture and incompatible substances
Incompatible Materials: Oxidizers, strong acids, strong bases
Advice: Keep away from sources of ignition, prevent static discharge
Engineering Controls: Use fume hood, provide eyewash and safety shower
Personal Protective Equipment: Nitrile gloves, chemical splash goggles, laboratory coat, dust mask or respirator if airborne dust is generated
Respiratory Protection: Use approved respirator for dust if ventilation inadequate
Eye Protection: Tight-fitting goggles
Skin Protection: Impermeable gloves, long-sleeved clothing
Hygiene Measures: Wash hands and face after handling, remove contaminated clothing, avoid eating or drinking in work area
Appearance: White to pale yellow powder
Odor: Nearly odorless
Melting Point: 50–56 °C
Boiling Point: Decomposes before boiling
Flash Point: Not determined
Solubility: Soluble in water, ethanol
Vapor Pressure: Negligible at room temperature
Density: About 0.9–1.1 g/cm³
pH (solution): Not available
Partition Coefficient (log Pow): No data
Stability: Avoid excessive heat and light
Viscosity: Not applicable (solid at room temperature)
Chemical Stability: Stable under recommended storage conditions
Reactivity: No dangerous reactions if handled and stored properly
Hazardous Reactions: Reacts with strong oxidizers, possible violent reaction
Conditions to Avoid: Heat, moisture, direct sunlight, sources of ignition
Incompatible Substances: Strong oxidizing agents, strong acids and bases
Decomposition Products: Hydrogen chloride, imidazole derivatives, carbon oxides, nitrogen oxides
Acute Toxicity: Low to moderate toxicity based on structural analogues
Routes of Exposure: Inhalation, ingestion, skin, eye
Potential Effects: Irritation to skin and eyes, possible mucous membrane damage, nausea, headaches from dust exposure
Sensitization: May cause allergic skin reaction based on imidazolium compounds
Chronic Effects: Not fully established, long-term exposure data limited
LD50 (oral, rat): Data not available, expected to be above 500 mg/kg
Carcinogenicity: No evidence found in available literature
Mutagenicity: No data available
Reproductive Toxicity: No data available
Toxicity to Aquatic Life: Harmful to aquatic organisms, may cause long-term adverse effects in aquatic environment
Mobility: Likely to persist in soil and sediment, limited mobility
Persistence and Degradability: Not readily biodegradable, long residence time in environment
Bioaccumulation: Potential for accumulation in aquatic organisms
Other Adverse Effects: Discharge to the environment must be avoided
Disposal Methods: Dispose of contents and container through licensed chemical waste disposal contractor
Contaminated Packaging: Empty containers should be triple rinsed with water and disposed of as hazardous waste
Precautions: Do not allow material to reach ground water, water course, or sewage system
Disposal Regulations: Follow local, regional, and national regulations for hazardous waste, chemical residues and contaminated materials
UN Number: Not regulated for ground transport
Transport Hazard Class: Not classified under UN hazardous transport regulations
Packing Group: Not assigned
Marine Pollutant: Yes, due to persistence and toxicity
Transport Precautions: Keep containers tightly sealed in transit, prevent spillage during shipment, store away from incompatible materials during transport
Safety, Health, and Environmental Regulations: Subject to chemical safety assessment in accordance with OSHA Hazard Communication Standard (29 CFR 1910.1200), REACH registration required in the EU
Inventory Status: Not listed on U.S. TSCA Inventory, possible research use only
Labelling Requirements: Requires GHS and HMIS labeling on container
Restrictions: Not approved for use in food, cosmetics, or pharmaceuticals
Other Requirements: Reportable under local environmental protection laws if released in significant quantities, employer training required for safe handling and disposal practices
