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Imidazole, 99%
Description
Chemical Properties
· Formula: C3H4N2
· Formula weight: 68.08
· Melting Point: 88-92°
· Boiling Point: 256°
· Flash point: 145°(293°F)
· Density: 1.03
· Sensitivity: Hygroscopic. Store under Nitrogen. Ambient temperatures.
· Form: Crystalline flakes
· Solubility: Miscible with water, ethanol, ether, acetone, chloroform, pyridine and methanol. Slightly miscible with benzene and petroleum ether.
Literature References
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).
Applications
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.
Notes
Incompatible with acids, acid anhydrides and strong oxidizing agents.
Other References:
· Beilstein : 103853
· Merck : 14,4912
· UN# : UN3263
GHS Hazard and Precautionary Statements
Hazard Statements : H301-H314-H318
Toxic if swallowed.Causes severe skin burns and eye damage.Causes serious eye damage.
Precautionary Statements : P260-P301+P310-P303+P361+P353-P305+P351+P338-P405-P501a
Do not breathe dust/fume/gas/mist/vapours/spray.
IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower.
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.Store locked up.Dispose of contents/container in accordance with local/regional/national/international regulations.
위험 및 안전 코드
위험 문구 : 61-22-34
May cause harm to the unborn child.Harmful if swallowed.Causes burns.
안전 문구 : 53-45
Avoid exposure - obtain special instructions before use.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
· TSCA : 예
· RTECS : NI3325000