As2O5, or arsenic pentoxide, is a chemical compound composed of arsenic and oxygen. It appears as a white, crystalline solid and is primarily used in the production of glass and ceramics. As2O5 is also utilized in the manufacture of certain pesticides and as a dehydrating agent in various chemical reactions. In addition to its industrial applications, arsenic pentoxide is important in analytical chemistry for detecting arsenic in samples. However, it is considered toxic and poses health risks, making proper handling and safety precautions essential when working with this compound.