Silver chloride is a chemical compound made up of silver and chlorine, represented by the formula AgCl. It appears as a white, crystalline solid that is insoluble in water. Silver chloride is often used in photography, where it plays a crucial role in the development of images on film. In addition to its use in photography, silver chloride has applications in various fields, including medicine and electronics. It can be used in antiseptic solutions and as a component in certain types of sensors. When exposed to light, silver chloride can decompose, releasing silver and chlorine, which is a key property utilized in its applications.