Material Safety Data Sheet: 1-Hexyl-3-Methylimidazolium Bromide

Identification

Product Name: 1-Hexyl-3-Methylimidazolium Bromide
CAS Number: 171058-17-6
Synonyms: HmimBr, 1-Hexyl-3-methylimidazolium bromide
Recommended Use: Laboratory chemical, process solvents, green chemistry applications
Supplier: Chemical distributors, specialty chemical suppliers
Emergency Contact: Local emergency numbers, Poison control center

Hazard Identification

GHS Classification: Acute Toxicity (Oral, Dermal, Inhalation), Skin Irritation, Eye Irritation
Pictograms: Skull and crossbones, exclamation mark
Signal Word: Danger
Hazard Statements: Harmful if swallowed; Causes skin irritation; Causes serious eye irritation; May cause respiratory irritation
Precautionary Statements: Avoid breathing dust or mist, wash thoroughly after handling, do not eat or drink while using this product, use only outdoors or in well-ventilated areas, wear protective gloves and eye protection
Route of Exposure: Inhalation, ingestion, skin and eye contact
Chronic Effects: Data on chronic health effects is limited; no clear evidence for long-term effects with controlled exposure, but caution is suggested due to structural similarity to other imidazolium compounds

Composition / Information on Ingredients

Chemical Name: 1-Hexyl-3-Methylimidazolium Bromide
Common Name: HmimBr
Chemical Formula: C10H19BrN2
Molecular Weight: 263.18 g/mol
Concentration: 100%
Impurities: Typical stock is high purity; trace impurities may include unreacted starting materials and residual solvents below reportable limits

First Aid Measures

Eye Contact: Rinse carefully with water for at least 15 minutes; remove contact lenses if present and easy to do; seek medical attention if irritation remains
Skin Contact: Wash off with plenty of soap and water; remove contaminated clothing and footwear; seek medical attention if irritation develops
Inhalation: Move person to fresh air; provide oxygen or artificial respiration if breathing is difficult; seek medical advice if symptoms persist
Ingestion: Rinse mouth with water; do not induce vomiting; seek medical attention quickly
Symptoms: Burning sensation, coughing, headache, nausea, skin or eye redness

Fire-Fighting Measures

Suitable Extinguishing Media: Water spray, alcohol-resistant foam, dry chemical, carbon dioxide
Unsuitable Extinguishing Media: Straight water streams may spread spilled product
Fire Hazards: Not highly flammable but may form toxic and irritating gases under fire conditions; combustion products may include nitrogen oxides, hydrogen bromide, carbon oxides
Protective Equipment: Use full firefighting turnout gear including self-contained breathing apparatus
Special Procedures: Evacuate area; control runoff to prevent environmental contamination

Accidental Release Measures

Personal Precautions: Avoid contact with skin and eyes, avoid inhalation; ventilate area
Protective Equipment: Wear chemical-resistant gloves, protective clothing, safety goggles, and suitable respirator
Environmental Precautions: Prevent release to sewers, drains, or water bodies; report environmental spills as required
Spill Clean-up: Absorb using inert materials such as sand or earth; collect and place in sealable containers for proper disposal; decontaminate affected area with water and mild detergent

Handling and Storage

Handling Practices: Minimize dust generation and accumulation; handle away from food and beverages; wash hands after use
Storage Conditions: Store in tightly closed containers in a cool, dry, well-ventilated area; protect from moisture and incompatible substances like strong oxidizers
Incompatibilities: Avoid contact with strong oxidizing agents, acids, and bases
Special Requirements: Use only with appropriate chemical-resistant equipment and secondary containment where feasible

Exposure Controls and Personal Protection

Engineering Controls: Use fume hood or local exhaust ventilation to minimize exposure
Exposure Limits: No occupational exposure limits established; treat using standard good practice for potentially harmful chemicals
Eye Protection: Chemical safety goggles or face shield
Skin Protection: Chemical-resistant gloves and lab coat or coveralls
Respiratory Protection: Appropriately fitted respirator if ventilation is inadequate
Hygiene Measures: Remove contaminated clothing, do not eat or drink in work area, wash hands thoroughly after handling

Physical and Chemical Properties

Appearance: White to off-white crystalline powder
Odor: Slight, may have faint amine-like smell
Odor Threshold: Not determined
pH: Neutral to slightly basic in water
Melting Point: 75–80°C
Boiling Point: Decomposes before boiling
Flash Point: Not flammable below 150°C
Evaporation Rate: Not applicable (solid at room temperature)
Flammability: Not classed as flammable under GHS
Vapor Pressure: Negligible at ambient temperatures
Vapor Density: Not applicable
Relative Density: Approximately 1.3 g/cm³
Solubility: Readily soluble in water and polar solvents
Partition Coefficient (log Kow): Not determined
Autoignition Temperature: Not determined
Decomposition Temperature: Above 200°C
Viscosity: Not applicable

Stability and Reactivity

Chemical Stability: Stable when stored and used as directed under normal temperatures and pressures
Conditions to Avoid: Moisture, high heat, strong oxidizers
Incompatible Materials: Strong acids, strong bases, oxidizing agents
Hazardous Decomposition Products: Thermal decomposition produces carbon monoxide, carbon dioxide, hydrogen bromide, nitrogen oxides
Polymerization: No hazardous polymerization expected

Toxicological Information

Routes of Exposure: Dermal, inhalation, ingestion, ocular
Acute Toxicity: Moderate toxicity if ingested or absorbed through skin; LD50 values not fully established
Skin Corrosion/Irritation: Causes skin irritation, especially after prolonged contact
Serious Eye Damage/Irritation: Causes significant irritation to eyes
Respiratory Sensitization: Dust or mist may irritate respiratory system, especially for asthmatics
Carcinogenicity: There is no data indicating carcinogenicity; not listed as carcinogen by IARC, NTP, OSHA
Mutagenicity: Current data do not suggest genotoxic effects, but data is incomplete
Reproductive Toxicity: No clear evidence for reproductive toxicity in available studies
Symptoms of Overexposure: Headache, coughing, burning eyes, nausea, skin rash

Ecological Information

Aquatic Toxicity: May be toxic to aquatic life at higher concentrations; evidence suggests imidazolium salts can inhibit growth in aquatic microorganisms
Persistence and Degradability: Degrades slowly in the environment; not rapidly biodegradable
Bioaccumulation Potential: Moderate risk of bioaccumulation in aquatic organisms over time
Mobility in Soil: Dissolves in water and may leach into groundwater
Other Information: Avoid uncontrolled release; imidazolium ionic liquids may affect plants and soil microorganisms when concentrated

Disposal Considerations

Disposal Methods: Dispose of as hazardous chemical waste according to local, state, and federal regulations
Container Disposal: Triple-rinse and dispose of empty containers as hazardous waste
Special Precautions: Do not discharge into drains, sewers, or natural water bodies; use secondary containment for storage and handling
Recommended Treatment: Safe landfill or high-temperature incineration at an approved facility

Transport Information

UN Number: Not regulated under most transport codes but check with local regulations
Proper Shipping Name: 1-Hexyl-3-Methylimidazolium Bromide
Transport Hazard Class: Not classified as dangerous for transport
Packing Group: Not assigned
Environmental Hazards: May be hazardous to aquatic environments if released in bulk
Special precautions: Use spill-proof packaging, guard against breaking containers

Regulatory Information

TSCA Inventory: Listed
REACH Status: Registered for research and development, not registered for commercial use in the EU
OSHA: Not specifically regulated as a hazardous chemical
SARA Title III: Not listed among extremely hazardous substances
California Proposition 65: Not on Proposition 65 list
Worker Protection: Use as per OSHA laboratory standard and Chemical Hygiene Plan
Other Relevant Regulations: Compliant with most local, state, and national chemical safety laws; users should always verify current requirements