Jodek amonu

Ammonium Iodide
Other Names: Ammonium salt of hydroiodic acid
CAS Number: 12027-06-4
Chemical Formula: NH₄I
Molar Mass: 144.94 g/mol
Appearance: White to pale yellow crystalline solid (may darken with light exposure)

Description:
Ammonium iodide is an inorganic salt composed of ammonium (NH₄⁺) and iodide (I⁻) ions. It is highly soluble in water and alcohol, forming clear solutions. The compound is light-sensitive and may slowly decompose upon prolonged exposure to air and moisture, releasing iodine and turning yellowish. It is mainly used in photographic chemistry, analytical applications, and as a source of iodide ions in laboratories.

Chemical and Physical Properties

• Density: ~2.51 g/cm³

• Melting Point: ~551°C

• Boiling Point: Decomposes before boiling

• Solubility in Water: Highly soluble

• Solubility in Other Solvents: Soluble in ethanol and methanol

• Odor: Odorless

Applications

• Photographic Chemistry: Used in emulsion and developing processes.

• Analytical Reagent: Source of iodide ions in chemical analysis and reactions.

• Organic Synthesis: Sometimes used in alkylation and iodination reactions.

• Medical and Research Use: Employed in iodide-related studies and experiments.

Safety

Signal Word: Warning

Handling and Storage

• Handling Precautions: Avoid exposure to light and moisture. Prevent contact with oxidizing agents. Handle in well-ventilated areas using suitable PPE.

• Storage Conditions: Store in a tightly sealed container in a cool, dry, and dark place. Protect from moisture, air, and direct sunlight.