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Imidazole is used as a buffer in the range of pH 6.2-7.8. It is also an histamine antagonist. It acts as a chelator and forms complexes with various divalent cations. It is used as a corrosion inhibitor on certain transition metals such as copper. Its derivatives, like polybenzimidazole (PBI), act as fire retardants. It finds application in photography and electronics. Imidazole salts are used as ionic liquids and precursors to stable carbenes. Imidazole derivatives like ketoconazole, miconazole and clotrimazole are involved in the treatment of various systemic fungal infections. It is a part of the theophylline molecule, present in tea leaves and coffee beans, which stimulates the central nervous system.
Nucleophilic catalyst for many acylation and silylation reactions, compare 4-(Dimethylamino)pyridine, A13016.
For use in: silylation of 1,3-diketones, see Hexamethyldisilazane, A15139; introduction of the TBDMS and TBDPS groups; see: tert-Butyldimethylchlorosilane, A13064, and tert-Butyldiphenylchlorosilane, A12721, respectively.
In combination with triphenylphosphine and iodine, vic-diols are converted to alkenes: Synthesis, 469 (1979), and alcohols to alkyl iodides: Synth. Commun., 20, 1473 (1990).
With 2 moles of an aroyl halide gives, after hydrolysis, good yields of 2-aroylimidazoles: Synthesis, 675 (1978).
Sankar, M.; Ajithkumar, T. G.; Sankar, G.; Manikandan, P. Supported imidazole as heterogeneous catalyst for the synthesis of cyclic carbonates from epoxides and CO 2. Catal. Commun. 2015, 59, 201-205.
Hart, K. R.; Sottos, N. R.; White, S. R. Repeatable self-healing of an epoxy matrix using imidazole initiated polymerization. Polymer 2015, 67,/span> 174-184.
Hazard Statements: H302-H314-H335-H360D-H500
Harmful if swallowed. Causes severe skin burns and eye damage. May cause respiratory irritation. May damage the unborn child. May form combustible dust concentrations in air
Precautionary Statements: P201-P202-P260-P264b-P270-P271-P281-P303+P361+P353-P304+P340-P305+P351+P338-P310-P330-P331-P363-P501c
Obtain special instructions before use. Do not handle until all safety precautions have been read and understood. Do not breathe dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Do not eat, drink or smoke when using this product. Use only outdoors or in a well-ventilated area. Use personal protective equipment as required. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician. Rinse mouth. Do NOT induce vomiting. Wash contaminated clothing before reuse. Dispose of contents/ container to an approved waste disposal plant