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Chemical Name: 1-Methylimidazole
Chemical Formula: C4H6N2
Common Uses: Found in laboratories, used for synthesis, manufacturing of pharmaceuticals, resins, and as a catalyst tier-chemical.
Appearance: Clear to light yellow liquid
Odor: Faint, amine-like
Molecular Weight: 82.1 g/mol
Classification: Skin irritation, eye irritation, sensitization possible for some users
Signal Word: Warning
Health Risks: Causes moderate to severe irritation if inhaled, ingested, or contacts eyes or skin; can trigger breathlessness, headaches, or nausea at higher exposures
Symptoms: Redness, burning sensation on contact; watery eyes; redness and swelling
Environmental Effects: Toxic to aquatic environments if enough of the chemical spills untreated
Main Component: 1-Methylimidazole (CAS No. 616-47-7)
Purity: Usually above 98 percent
Other Components: Trace impurities possible, depending on synthesis process
Inhalation: Move into fresh air immediately, seek medical advice if breathing becomes difficult
Skin Contact: Flush area with water for at least 15 minutes, remove contaminated clothing, seek medical attention for persistent irritation
Eye Contact: Rinse thoroughly with water for several minutes, keep eyelids open, consult a healthcare professional at any sign of damage
Ingestion: Rinse mouth, avoid inducing vomiting, obtain medical attention without delay
Extinguishing Media: Foam, dry chemical, carbon dioxide, water spray
Hazards from Combustion: Emits toxic nitrogen oxides and carbon oxides when burned
Protective Equipment: Firefighters should use self-contained breathing apparatus and protective clothing to prevent contact with vapors or contaminated water
Special Procedures: Cool exposed containers with water to prevent pressure build-up or explosion; avoid breathing fumes
Personal Precautions: Use protective gloves, chemical goggles, and avoid direct contact
Ventilation: Increase airflow in spill area to disperse vapors
Containment: Absorb with inert material like sand or vermiculite, avoid material entering drains
Cleanup: Use non-sparking tools; transfer residues to proper waste containers; wash area thoroughly
Handling: Work in well-ventilated spaces, avoid breathing vapors, wear protective equipment, do not eat or drink near the material
Storage: Store in tightly closed, corrosion-resistant containers in a cool, dry, and ventilated area; keep away from heat and incompatible materials like strong oxidizers or acids
Incompatibility: Strong oxidizing agents, acids, and acid chlorides
Shelf Life: Chemical stability makes storage practical for extended periods if container integrity is maintained
Engineering Controls: Use fume hoods or local exhaust ventilation
Personal Protective Equipment: Gloves (nitrile or neoprene preferred), safety goggles, lab coats
Respiratory Protection: Respirators recommended when concentrations exceed safe limits
Hygiene Measures: Wash hands thoroughly after handling
Appearance: Clear to pale yellow liquid
Odor: Almost imperceptible, ammonia-like
Boiling Point: Around 198°C
Melting Point: -60°C
Flash Point: Around 79°C (closed cup)
Solubility: Miscible with water and organic solvents
Vapor Pressure: Low at room temperature
pH: Slightly basic in solution
Chemical Stability: Stable under usual storage and handling conditions
Conditions to Avoid: Exposure to heat, open flames, incompatible chemicals
Hazardous Reactions: Reaction with strong acids, oxidizers may release hazardous gases
Decomposition Products: Nitrogen oxides, carbon oxides, other toxic fumes under burning
Acute Toxicity: Harmful if swallowed, inhaled, or absorbed through skin
Skin Irritation: Prolonged or repeated contact causes skin inflammation
Eye Damage: Risk of serious eye damage or long-term irritation
Sensitization: Allergic responses possible for some individuals
Potential Chronic Effects: No notable evidence of carcinogenicity, mutagenicity, or reproductive toxicity in well-documented sources; repeated exposure can sensitize skin and airways
Aquatic Toxicity: Harmful to aquatic life
Persistence and Degradability: Compound degrades over time, but can persist in surface water unless diluted or treated
Bioaccumulation: Low probability due to water solubility and metabolic breakdown
Ecological Warnings: Avoid large releases into sewage and drainage systems
Waste Methods: Treat as hazardous chemical waste; dispose of via licensed carrier and in accordance with national, state, and local regulations
Container Disposal: Rinse thoroughly, puncture or reduce to prevent reuse, then follow approved disposal route
Contaminated Material: Dispose of gloves, clothes, and cleanup materials in line with chemical waste procedures
UN Number: Not always classified as a hazardous material for ground transport, but treated with care due to its reactivity
Packing Group: Assignments vary; consult local regulatory schemes
Labeling: Use “irritant” or “harmful” signage where recommended
Special Precautions for Transport: Prevent container breakage, keep upright, avoid accidental releases during loading or unloading
Global Frameworks: Managed under workplace chemical safety programs (such as OSHA in the US or REACH in Europe)
Labelling: GHS-compliant labels mandatory in most jurisdictions
Restrictions: Avoid use around unprotected workers, minors, and in non-industrial settings
Reporting: Spills above minimum threshold levels trigger mandatory environmental reporting
Reference Guidelines: Always consult the current official lists for up-to-date restrictions or hazard classifications
