Ammonium iodide (NH4I)-Powder introduce:
Ammonium iodide is the chemical compound NH4I. It is easily soluble in water, from which it crystallizes in cubes. It is also soluble in ethanol. It gradually turns yellow on standing in moist air, owing to decomposition with liberation of iodine.
Molar mass：144.94 g/mol
Appearance：White crystalline powder
Melting point：551 °C (1,024 °F; 824 K) (sublimes)
Boiling point：235 °C (455 °F; 508 K) (in vacuum)
Solubility in water：155 g/100 mL (0 °C)；172 g/100 mL (20 °C)；250 g/100 mL (100 °C)
Magnetic susceptibility (χ)：-66.0•10−6 cm3/mol
It is used in photographic chemicals and some medications. Ammonium iodide and hydrogen peroxide plays an essential role for the eco-friendly oxyiodination of aromatic compounds. Ammonium Iodide and DMF is also useful for the copper-mediated selective cyanation reaction of Indoles and 2-Phenylpyridines.
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