Product Name: 1.2-Dimethylimidazole
Synonyms: 1,2-Dimethylimidazole; 1,2-Dimazole
Chemical Formula: C5H8N2
CAS Number: 1739-84-0
Manufacturer: Various chemical producers, typically listed per batch
Recommended Use: Used for chemical synthesis, research, catalysts, corrosion inhibitors
Contact Number for Emergencies: Local Poison Control Center or manufacturer’s emergency line
Classification: Combustible solid; irritant to skin, eyes, respiratory system
Signal Word: Warning
Hazard Statements: Causes severe skin burns, eye damage, may irritate respiratory tract, harmful if swallowed
Pictograms: Corrosive, Exclamation Mark
Precautionary Statements: Avoid breathing dust or vapors, wear protective gloves and eyewear, use only in well-ventilated areas, wash thoroughly after handling, do not eat, drink, or smoke during use
Chemical Name: 1.2-Dimethylimidazole
Concentration: 98-100%
Impurities: Specific impurities listed by batch; typically under 2% as process residues or moisture
Inhalation: Move person to fresh air, seek medical attention if symptoms like coughing, throat irritation, or shortness of breath appear
Skin Contact: Remove contaminated clothing immediately and rinse skin with plenty of water for at least 15 minutes
Eye Contact: Rinse widely opened eyes cautiously with water for several minutes, remove contact lenses, seek medical help
Ingestion: Rinse mouth with water, never induce vomiting; call poison center or doctor immediately
Suitable Extinguishing Media: Use dry chemical, CO2, alcohol-resistant foam, or water spray
Hazards During Fire: Toxic fumes such as nitrogen oxides and carbon oxides may arise on combustion, dense smoke can occur, heat can cause container rupture
Protective Equipment: Firefighters wear self-contained breathing apparatus, full protective gear, keep unnecessary people away
Advice: Remove containers from hazard zone if safe, use water spray to cool unopened containers
Personal Precautions: Evacuate area, avoid breathing dust, wear gloves, goggles, lab coat, and approved respirator
Environmental Precautions: Prevent spills from entering drains, soil, or water systems; use barriers or absorbent materials
Cleanup Methods: Sweep up without raising dust, place in labeled waste container for proper disposal, decontaminate area with water and mild detergent
Handling: Work in fume hood, avoid formation of dust, avoid contact with eyes, skin, and clothing, wash hands before breaks and after work
Storage: Store in cool, dry, well-ventilated place, away from incompatible substances (strong oxidizers, acids), keep container tightly closed, label container clearly
Occupational Exposure Limits: No established limits from OSHA or ACGIH at typical concentrations
Engineering Controls: Use local exhaust ventilation, fume hood
Personal Protective Equipment: Safety goggles, chemical-resistant gloves, protective lab coat, suitable respirator if dust/vapor risk exists
Hygiene Measures: Keep food, drink, and tobacco away from use area, wash thoroughly after handling, handle in well-ventilated spaces
Appearance: White to light beige crystalline powder
Odor: Faint amine-like
Odor Threshold: Not established
pH: Basic in water
Melting Point: 79–82 °C
Boiling Point: 237–240 °C
Flash Point: Approx. 105 °C
Solubility: Readily soluble in water, ethanol, organic solvents
Vapor Pressure: Very low at room temperature
Density: About 1.05 g/cm³
Partition Coefficient (n-octanol/water): Not measured
Viscosity: Not applicable as solid
Auto-Ignition Temperature: Not available
Chemical Stability: Stable under recommended storage and handling conditions
Conditions to Avoid: Moisture, heat, direct sunlight, open flames, static discharge
Incompatible Materials: Strong oxidizing agents, strong acids, acyl halides
Hazardous Decomposition Products: Nitrogen oxides, carbon monoxide, carbon dioxide, irritating gases from fire or improper storage
Hazardous Reactions: Can react exothermically with oxidizers or acids
Likely Exposure Routes: Inhalation, ingestion, skin and eye contact
Acute Effects: Corrosive to eyes, skin, mucous membranes, respiratory tract irritation, possible burns
Chronic Effects: Prolonged exposure may cause dermatitis, sensitization
Toxicity Data: LD50 (oral, rat) approx. 500–800 mg/kg; data varies by batch
Carcinogenicity: Not listed as carcinogen by IARC, NTP, or OSHA
Other Effects: Animal studies report moderate toxicity; no sufficient data for humans
Aquatic Toxicity: Potentially harmful to aquatic life, limited data on precise effect concentration
Persistence/Degradability: Partially bio-degradable over time, slow in water or soil without specific microorganisms
Bioaccumulative Potential: Low to moderate; limited data, small molecules like this tend not to bioaccumulate significantly
Mobility in Soil: Soluble in water, may migrate through soil easily; can contaminate groundwater
Other Environmental Effects: Runoff from spills or improper disposal can damage aquatic systems
Waste Treatment Methods: Incinerate in chemical incinerator with afterburner and scrubber, observe local, state, national regulations
Contaminated Packaging: Rinse with water, send to approved disposal facility
Disposal Precautions: Avoid release to the environment, label and store waste securely, consult licensed waste disposal contractor for large amounts
UN Number: Not classified as dangerous by most regulatory agencies
UN Proper Shipping Name: Chemical, not otherwise specified (technical shipping name as per carrier request)
Transport Hazard Class: None assigned
Packing Group: Not assigned
Special Precautions for Carrier: Secure packaging prevents leaks, keep separate from oxidizers and acids
Other Notes: Always check with carrier for latest regulations, as guidelines can shift due to quantity or local interpretations
Country Regulations: Not listed under U.S. SARA Title III, CERCLA, or Canada DSL/NDSL
Inventory Status: Typically found in chemical inventories such as TSCA, EINECS
Workplace Safety: Subject to general chemical handling guidelines in laboratory and workplace
Additional Labeling: Corrosive symbol, hazard communication as outlined by GHS/OSHA
Other Specific Standards: Not subject to export restrictions but requires proper documentation in shipments and transfer within regulated environments
