Product Name: 1-Hydroxyethyl-3-Methylimidazolium Chloride
Chemical Family: Imidazolium salts
Molecular Formula: C6H11ClN2O
Synonyms: HEMIM-Cl
Manufacturer: Contact supplier for latest information
Recommended Use: Solvent, research chemical, ionic liquid
Emergency Contact: Follow local workplace guidelines for emergency support numbers
GHS Classification: Eye irritation (Category 2A), Skin irritation (Category 2), Acute aquatic toxicity (Category 3)
Pictograms: Exclamation Mark, Environment
Signal Word: Warning
Hazard Statements: Causes serious eye irritation; causes skin irritation; harmful to aquatic life
Precautionary Statements: Avoid release to environment; wear protective gloves and eye protection; wash thoroughly after handling; if on skin, wash with soap and water; if in eyes, rinse cautiously with water
Potential Health Effects: Eye and skin irritation, ingestion may cause gastrointestinal disturbances
Chemical Name: 1-Hydroxyethyl-3-Methylimidazolium Chloride
CAS Number: 135139-91-0
EC Number: 603-465-8
Percentage: ≥98% (purity may vary by supplier)
Impurities: Trace water (<0.5%), unrelated organic salts (<0.1%)
Additives: No intentional additives
Inhalation: Move person to fresh air, support breathing if needed, seek medical attention for persistent symptoms
Skin Contact: Remove contaminated clothing, rinse affected area with plenty of water, get medical help for irritation
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses if present and easy, continue rinsing, consult a doctor if irritation persists
Ingestion: Rinse mouth with water, do not induce vomiting, seek immediate medical help
Note to Physician: Treat symptomatically
Suitable Extinguishing Media: Use water spray, alcohol-resistant foam, dry chemical, or carbon dioxide
Unsuitable Extinguishing Media: Strong water stream may scatter spilled material
Hazardous Combustion Products: Hydrogen chloride gas, nitrogen oxides, carbon oxides
Special Protective Equipment: Firefighters should wear self-contained breathing apparatus and full protective gear
Fire/Explosion Hazards: Product may decompose upon exposure to high temperature producing toxic fumes; avoid inhalation
Personal Precautions: Wear respiratory protection, chemical-resistant gloves, splash goggles, and suitable protective clothing
Environmental Precautions: Prevent entry to water bodies or drains; contain the spill to minimize impact
Cleanup Methods: Absorb with inert material such as sand or earth, collect in suitable container for disposal, ventilate area and wash spill site after material pickup is complete
Notifications: Report significant releases according to local regulations
Handling: Always use in a well-ventilated area; avoid contact with skin, eyes, and clothing; do not breathe dust or vapor; practice good industrial hygiene
Storage: Store tightly closed in a cool, dry, and well-ventilated space out of direct sunlight; store away from incompatible materials such as strong oxidizers
Special Considerations: Protect containers from damage, use only non-sparking tools and grounded equipment, prevent static discharge
Exposure Limits: No established occupational exposure limits for this compound
Engineering Controls: Use local exhaust or general ventilation to minimize exposure
Personal Protective Equipment: Chemical-resistant gloves (nitrile or butyl rubber), safety glasses or goggles, lab coat or apron, suitable respiratory protection if ventilation is insufficient
Hygiene Measures: Always wash hands thoroughly after handling and before eating, remove contaminated clothing before entering clean areas
Appearance: White to off-white crystalline powder
Odor: Practically odorless
Odor Threshold: Not established
pH: Neutral to slightly acidic (3.5–5 in water, 20°C)
Melting Point/Freezing Point: 95–105°C
Boiling Point: Decomposes before boiling
Flash Point: >180°C (closed cup)
Evaporation Rate: Not applicable
Flammability: Not classified as flammable
Vapor Pressure: Negligible at 20°C
Relative Density: 1.18–1.22 g/cm³ at 20°C
Water Solubility: Fully soluble
Partition Coefficient (n-octanol/water): Not available
Decomposition Temperature: >200°C
Viscosity: Not determined
Explosive Properties: Not explosive
Oxidizing Properties: Not oxidizing
Reactivity: Stable under normal temperatures and pressures
Chemical Stability: Stable when stored as directed
Possibility of Hazardous Reactions: No hazardous polymerization noted
Conditions to Avoid: Extreme heat, moisture, direct sunlight
Incompatible Materials: Strong oxidizing agents, strong acids
Hazardous Decomposition Products: Hydrogen chloride, nitrogen oxides, carbon oxides; toxic fumes possible under fire conditions
Acute Toxicity (Oral): LD50 (rat) >2000 mg/kg (extrapolated from structurally similar compounds)
Skin Corrosion/Irritation: Causes irritation with possible redness and dryness
Eye Damage/Irritation: Causes eye irritation and possible temporary injury
Respiratory Sensitization: Dust or vapor can irritate mucous membranes
Skin Sensitization: No strong evidence of sensitization
Chronic Toxicity: Prolonged exposure may lead to skin dryness or cracking
Carcinogenicity: Not listed by NTP, IARC, or OSHA
Mutagenicity: Not expected based on available data
Reproductive Toxicity: Data not adequate; minimize exposure to women of childbearing age
Ecotoxicity: Harmful to aquatic organisms; estimated aquatic LC50 (fish, 96h) 10–100 mg/L
Persistence and Degradability: Expected to be moderately persistent in the environment
Bioaccumulative Potential: Not expected to bioaccumulate significantly
Mobility in Soil: High water solubility indicates mobility in soil possible
Other Adverse Effects: No data available for ozone, photochemical smog, or endocrine disruption
Disposal Methods: Collect and dispose of in accordance with local, regional, and national regulations; incinerate or landfill through licensed waste management contractor
Container Disposal: Triple rinse and render containers unusable before disposal
Special Precautions: Prevent release to environment; avoid discharge into sewage, surface, or groundwater
UN Number: Not regulated for transport under RID/ADR, IMDG, or IATA
Proper Shipping Name: Not classified as a dangerous good
Packing Group: Not applicable
Hazard Class: Not applicable
Environmental Hazards: Harmful to aquatic life; consider environmental impact in case of large spills
Special Precautions: Protect container from physical damage, moisture, and direct sunlight during transit
US EPA TSCA Status: Consult supplier; may not appear on TSCA inventory
EU Reach Status: Substance registration may be required
Labelling Requirements: Comply with local and international workplace chemical labeling standards
SARA Title III: Not listed as an extremely hazardous substance
California Proposition 65: Not listed
Other Regulations: Check with national and regional authorities for details related to chemical safety and environmental regulations applicable to this substance
