P2O5, or diphosphorus pentoxide, is a chemical compound composed of two phosphorus atoms and five oxygen atoms. It is commonly used as a dehydrating agent in various chemical processes and is known for its ability to absorb moisture from the air. P2O5 is often found in fertilizers, where it serves as a source of phosphorus, an essential nutrient for plant growth. In its solid form, P2O5 appears as a white, crystalline powder. When it comes into contact with water, it reacts to form phosphoric acid, which is important in many industrial applications. The compound is also utilized in the production of glass and ceramics, contributing to their durability and strength.