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. 

 Related pages 
Silver fluoride
Silver chloride
Silver bromide

Category:Silver compounds
Category:Iodine compounds