Imidazol

Imidazole
Other Names: 1H-Imidazole, Glyoxaline
CAS Number: 288-32-4
Sum Formula: C₃H₄N₂
Molar Mass: 68.08 g/mol
Appearance: White to off-white crystalline powder

Imidazole is a heterocyclic aromatic organic compound containing two nitrogen atoms in a five-membered ring. It exhibits weakly basic properties and is highly versatile in coordination chemistry, organic synthesis, and materials science. Due to its nucleophilicity and stability, it is widely used as a reagent, ligand, and intermediate in technical applications.

Chemical and Physical Properties
Density: 1.03 g/cm³
Melting Point: 89–91°C
Boiling Point: 256°C
Solubility in Water: Fully miscible
Solubility in Organic Solvents: Soluble in ethanol, methanol, chloroform, and DMSO
pKa: ~6.99 (protonated form)
Odor: Slightly amine-like
Stability: Stable under normal storage conditions

Applications
Used as a building block in the synthesis of corrosion inhibitors, resins, and specialty chemicals
Serves as a base and nucleophile in organic synthesis
Ligand in coordination chemistry and organometallic complexes
Applied in electroplating baths and pH regulation in non-aqueous systems
Used as a catalyst or co-catalyst in technical and polymerization processes

Safety

Signal Word: Warning

First Aid Measures
Eye Contact: Rinse with water for several minutes. Seek medical attention if irritation occurs
Skin Contact: Wash with soap and water. Remove contaminated clothing
Inhalation: Move to fresh air. Seek medical help if symptoms persist
Ingestion: Rinse mouth. Do not induce vomiting. Seek medical advice

Handling and Storage
Store in a tightly sealed container in a cool, dry, well-ventilated area
Protect from moisture, strong acids, and oxidizing agents
Avoid inhalation of dust and contact with skin and eyes