Chemical Name: 4-Nitroimidazole
Synonyms: 4-Nitro-1H-imidazole
CAS Number: 3034-41-1
Molecular Formula: C3H3N3O2
Molecular Weight: 113.07 g/mol
Recommended Use: Laboratory reagent, research chemical
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Classification: Acute toxicity (oral, dermal), skin irritation, serious eye irritation, specific target organ toxicity
Hazard Statements: Harmful if swallowed or inhaled, causes skin and eye irritation, may cause respiratory irritation
Pictograms: Exclamation mark
Signal Word: Warning
Precautionary Statements: Avoid breathing dust, wash hands thoroughly after handling, use only outdoors or in well-ventilated area, wear protective gloves, eye protection, and clothing
Emergency Overview: Yellow or beige solid with possible musty odor, can irritate exposed skin, eyes, and mucous tissue
Substance: 4-Nitroimidazole
CAS Number: 3034-41-1
Percentage: ≥98% by weight
Impurities: Trace impurities not classified as hazardous at relevant concentrations
Inhalation: Move person to fresh air, keep at rest in a position comfortable for breathing, seek medical advice if symptoms persist
Skin Contact: Remove contaminated clothing, rinse skin with water and soap, get medical help for persistent irritation
Eye Contact: Rinse cautiously with water for at least 15 minutes, remove contact lenses if present and easy to do, get medical attention if irritation develops
Ingestion: Rinse mouth, do not induce vomiting, seek immediate medical attention
Most Important Symptoms: Coughing, breathing discomfort, skin redness, burning eyes, stomach upset
Notes for Physicians: Symptomatic treatment advised, eliminate exposure source
Suitable Extinguishing Media: Water spray, foam, dry chemical, carbon dioxide
Specific Hazards: Combustion releases toxic nitrogen oxides and carbon oxides, dust can form ignitable mixtures in air
Protective Equipment for Firefighters: Self-contained breathing apparatus and full protective gear required
Special Firefighting Procedures: Use water spray to cool fire-exposed tanks and containers, avoid breathing vapors, contain contaminated runoff
Personal Precautions: Wear protective equipment, avoid dust generation, ventilate area
Environmental Precautions: Prevent spillage from entering drains, waterways, or soil
Methods for Cleaning Up: Sweep up and place in suitable, marked containers for disposal, avoid raising dust, wash spill area with water after material pickup
Handling: Handle in ventilated areas, do not eat, drink, or smoke while using, avoid dust creation, wash thoroughly after handling
Storage: Keep tightly sealed in original container, protect from moisture and sunlight, store in dry, cool, and well-ventilated place, segregate from strong oxidizers and acids
Exposure Limits: No specific occupational exposure limits assigned
Engineering Controls: Use local exhaust ventilation, closed systems
Personal Protective Equipment: Chemical-resistant gloves, safety glasses or goggles, lab coat or apron, NIOSH-approved dust mask or respirator
Hygiene Measures: Wash hands before breaks and after work, shower after exposure, keep work clothes separate from other clothing
Appearance: Yellow to beige crystalline solid
Odor: Faint, musty odor
Melting Point: 300–302°C
Boiling Point: Not applicable (decomposes)
Solubility: Soluble in water, alcohols
Density: Approximately 1.55 g/cm³
pH (1% solution): Data not available
Vapor Pressure: Not significant at room temperature
Flash Point: Not applicable
Explosion Limits: No data available
Partition Coefficient (log Kow): Not established
Chemical Stability: Stable under recommended storage and handling conditions
Conditions to Avoid: Heat, moisture, direct sunlight, sources of ignition
Incompatible Materials: Strong oxidizing agents, strong acids and bases
Hazardous Decomposition Products: Nitrogen oxides, carbon oxides, toxic dust/fumes
Possibility of Hazardous Reactions: Not prone to dangerous polymerization
Acute Toxicity: Harmful if swallowed, estimated oral LD50 (rat) 350–2000 mg/kg
Skin Corrosion/Irritation: Can cause mild to moderate irritation
Eye Damage/Irritation: May cause significant irritation
Respiratory Effects: Dust inhalation may cause respiratory irritation, coughing
Sensitization: Skin sensitization unlikely under normal use conditions
Mutagenicity: Some nitroimidazoles have shown mutagenic effects in microorganisms
Carcinogenicity: No data found on carcinogenicity for this specific compound
Reproductive Toxicity: No dependable studies available
Other Information: Prolonged contact may worsen respiratory and dermal conditions
Ecotoxicity: Harmful to aquatic life at high concentrations, exact LC50 for fish and other species not established
Persistence and Degradability: Structure suggests moderate persistence in soil and water, biodegradability not thoroughly studied
Bioaccumulative Potential: Not expected to bioaccumulate based on molecular weight and structure
Mobility in Soil: Likely moderate mobility due to water solubility
Other Adverse Effects: No ozone depletion, no known significant environmental hazard at low environmental concentrations
Waste Treatment Methods: Dispose as hazardous waste according to local, regional, or national regulations, avoid direct release to environment
Contaminated Packaging: Triple rinse containers, dispose in accordance with law
Additional Information: Don’t mix with general trash, incinerate under controlled conditions if possible, report large spills to environmental authorities
UN Number: Not classified as dangerous for transport
Proper Shipping Name: 4-Nitroimidazole
Transport Hazard Class: Not regulated
Packing Group: N/A
Environmental Hazards: Not a marine pollutant
Special Precautions: Use robust packaging to minimize dust, keep containers upright and sealed
EU Regulations: Not listed on Annex I of Directive 67/548/EEC
US TSCA: Listed
OSHA: Not specifically regulated
Canada DSL/NDSL: Not listed
Other Regulatory Listings: Check local and national inventories, local regulations may apply
Labeling Requirements: Include hazard pictograms, hazard, and precautionary statements consistent with GHS guidelines
Additional Information: Maintain all required safety records, update MSDS as new data becomes available
