Arsenic Pentaselenide

Arsenic pentaselenide is a chemical compound with the molecular formula As2Se5. It consists of two arsenic atoms and five selenium atoms arranged in a crystal lattice structure. The compound is a dark red or black solid with a melting point of 570°C.

Arsenic pentaselenide is primarily used for its semiconducting properties, as it is a p-type semiconductor. This means that it has excess holes in its electron structure, which allows it to conduct electricity more readily than non-conductive materials. It can also be used in infrared detectors, solar cells, and other electronic devices.

In terms of its safety, arsenic pentaselenide is considered toxic and potentially hazardous to human health. Inhalation or ingestion of the compound can lead to severe respiratory, gastrointestinal, and neurological symptoms. Therefore, appropriate precautions should be taken when handling this compound, including wearing protective clothing and using proper ventilation systems.