Silver iodide
Silver iodide is a chemical compound. Its chemical formula is AgI. It contains silver in its +1 oxidation state. It also contains iodide ions.
Properties
Silver iodide is a yellow solid. It does not dissolve in water. It turns dark when light is shined on it. The darkening is caused by a chemical reaction. The silver iodide turns into silver and iodine.
Preparation
It is made by reacting an iodide such as sodium iodide with silver nitrate.
Uses
Silver iodide is sprinkled in clouds to make rain. It can also be used in photographic film.
Safety
Silver iodide is toxic. It can stain skin. It is not as toxic as other silver compounds that dissolve in water. The iodide also is toxic.
