1H-imidazole

1H-imidazole is a five-membered heterocyclic organic compound containing two nitrogen atoms at non-adjacent positions. With the molecular formula C3H4N2 and CAS number 288-32-4, it serves as a fundamental building block in organic chemistry. This amphoteric compound exhibits both acidic and basic properties, making it highly versatile in chemical synthesis. Its molecular weight is 68.08 g/mol, and it plays crucial roles in biological systems and industrial applications.

1H-imidazole is a white to slightly yellow crystalline solid at room temperature with a characteristic amine-like odor. It demonstrates excellent water solubility due to its polar nature and hydrogen bonding capabilities. The compound is also soluble in alcohols and other polar organic solvents. It has a melting point around 90°C and exhibits hygroscopic properties, readily absorbing moisture from air. Its amphoteric nature allows it to act as both an acid and base.

1H-imidazole is primarily used as an intermediate in pharmaceutical synthesis, particularly for antifungal medications and histamine receptor antagonists. It serves as a catalyst in organic reactions, especially in polymer chemistry and epoxy curing processes. The compound is essential in biochemical research as a buffering agent and enzyme cofactor. Additionally, it finds applications in the production of ionic liquids, coordination complexes, and as a corrosion inhibitor in various industrial processes.

1H-imidazole requires careful handling due to its corrosive and toxic properties (Acute Tox. 4, Skin Corr. 1C). Wear appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. Ensure adequate ventilation to prevent inhalation exposure. Handle in a well-ventilated area or under a fume hood. Avoid direct skin and eye contact, and prevent ingestion. Use non-sparking tools and ensure proper grounding to prevent static electricity buildup during transfer operations.

1H-imidazole should be stored in a cool, dry, well-ventilated area away from incompatible materials including strong oxidizing agents and acids. Keep containers tightly closed to prevent moisture absorption due to its hygroscopic nature. Store away from heat sources, ignition sources, and direct sunlight. Maintain storage temperature below 25°C and ensure proper labeling with hazard information. Separate from food, feed, and other consumables, and provide appropriate secondary containment to prevent environmental release.

1H-imidazole contact requires immediate action due to its corrosive properties. For skin contact, immediately remove contaminated clothing and flush affected area with copious amounts of water for at least 15 minutes. In case of eye contact, rinse immediately with clean water for 15-20 minutes while holding eyelids open. If inhaled, move to fresh air immediately. If ingested, do not induce vomiting and seek immediate medical attention. Always seek professional medical advice after any significant exposure.

1H-imidazole disposal must comply with local, national, and international waste regulations due to its hazardous classification. The compound should not be disposed of down drains or in regular waste streams. Contact licensed waste disposal companies for proper treatment and disposal. Small quantities may be neutralized under controlled conditions before disposal, but this should only be done by trained personnel. Maintain proper documentation of disposal activities and follow REACH and waste framework directive requirements for hazardous waste management.

1H-imidazole is classified as ADR Class 8 (corrosive substances), Packing Group III for transportation purposes. It must be packaged in UN-approved containers with proper hazard labels and documentation. Transport vehicles must carry appropriate emergency equipment and safety data sheets. Drivers require ADR certification for dangerous goods transport. Ensure proper segregation from incompatible materials during transport and comply with quantity limitations for different transport categories. Follow specific routing and timing restrictions where applicable.

1H-imidazole is subject to REACH regulation requiring registration for import/manufacture above one tonne annually. It falls under CLP regulation due to its Repr. 1B classification, requiring specific labeling with GHS pictograms (GHS08, GHS07, GHS05) and 'Danger' signal word. While not currently listed as SVHC, its reproductive toxicity classification means it may face future restrictions. Companies must maintain safety data sheets, conduct chemical safety assessments, and implement risk management measures throughout the supply chain.

1H-imidazole is available through OYSI, a specialized European distributor of technical chemicals serving industrial and research customers across Europe. OYSI provides properly classified and documented 1H-imidazole with complete regulatory compliance including safety data sheets and transport documentation. As an established chemical distributor, OYSI ensures product quality, proper packaging, and adherence to European chemical regulations. Contact OYSI directly for specific quantities, technical specifications, and delivery options to your location within Europe.