2809.10.00.00 - Diphosphorus pentaoxide

This HTS classification, 2809.10.00.00, specifically covers **diphosphorus pentaoxide**, also known as phosphorus pentoxide. This compound is a white, crystalline solid that is highly hygroscopic and a strong dehydrating agent. It is primarily used in chemical synthesis, particularly in the production of phosphoric acid and various phosphate esters. Its distinct chemical formula (P₂O₅) and properties differentiate it from other related phosphorus compounds.

At the same hierarchical level, sibling category 2809.20.00 encompasses phosphoric acid and polyphosphoric acids. While these are also products derived from phosphorus, diphosphorus pentaoxide is a distinct chemical entity and a precursor to these acids, rather than being the acids themselves. The key distinguishing factor lies in their chemical structure and primary function; diphosphorus pentaoxide acts as a powerful dehydrating agent and reactant, while phosphoric acid and polyphosphoric acids are typically considered acids with different industrial applications.

As a leaf node in the HTS database, diphosphorus pentaoxide (2809.10.00.00) does not have further subcategories. Classification at this level relies on accurately identifying the product as diphosphorus pentaoxide based on its chemical composition and physical characteristics, ensuring it is not mistakenly classified as the phosphoric acids found under the sibling category.